Guide de formation plus récente de RedHat RH302

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Code d'Examen: RH302
Nom d'Examen: RedHat (Red Hat Certified Engineer on Redhat Enterprise Linux 5 (Labs))
Questions et réponses: 330 Q&As

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NO.1 CORRECT TEXT
There is one partition /dev/hda14 mounted on /data. The owner of /data is root user and root group. And
Permission is full to owner user, read and execute to group member and no permission to others. Now
you should give the full permission to user user1 without changing pervious permission.
Answer and Explanation:
We know that every files/directories are owned by certain user and group. And Permissions are defines to
owner user, owner group and other.
-rwxr-x--- ¨¤Full permission to owner user, read and write to owner group and no permission to
others.
According to question: We should give the full permission to user user1 without changing the previous
permission.
ACL (Access Control List), in ext3 file system we can give permission to certain user and certain group
without changing previous permission. But that partition should mount using acl option.
Follow the stepsvi /etc/fstab
/dev/hda14 /data ext3 defaults,acl 0 1Either Reboot or use: mount -o remount /datasetfacl -m
u:user1:rwx /dataVerify using: getfacl /data

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NO.2 Use mkfs -t ext3 /dev/hda? Where ? is your partition number

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NO.3 Type the Size: +100M ¨¤ You can Specify either Last cylinder of Size here.

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NO.4 /dev/hda? /mnt/neo ext3 defaults 1 2

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NO.5 CORRECT TEXT
Successfully resolv to server1.example.com where your DNS server is 172.24.254.254
Answer and Explanation:
1. vi /etc/resolv.conf
nameserver 172.24.254.254
2. host server1.example.com

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NO.6 vi /etc/fstab

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NO.7 mount /dev/hda? /mnt/neo
4 CORRECT TEXT
Your System is going use as a router for 172.24.0.0/16 and 172.25.0.0/16. Enable the IP
Forwarding.
Answer and Explanation:
1. echo "1" >/proc/sys/net/ipv4/ip_forward
2. vi /etc/sysctl.conf
net.ipv4.ip_forward=1
/proc is the virtual filesystem, containing the information about the running kernel. To change the
parameter of running kernel you should modify on /proc. From Next reboot the system, kernel will
take the value from /etc/sysctl.conf.
5.CORRECT TEXT
Some users home directory is shared from your system. Using showmount -e localhost command, the
shared directory is not shown. Make access the shared users home directory.
Answer and Explanation:
1. Verify the File whether Shared or not ? : cat /etc/exports
2. Start the nfs service: service nfs start
3. Start the portmap service: service portmap start
4. Make automatically start the nfs service on next reboot: chkconfig nfs on
5. Make automatically start the portmap service on next reboot: chkconfig portmap on
6. Verify either sharing or not: showmount -e localhost
7. Check that default firewall is running on system ? if running flush the iptables using iptables -F and stop
the iptables service.
6.CORRECT TEXT
neo user tried by:
dd if=/dev/zero of=/home/neo/somefile bs=1024 count=70
files created successfully. Again neo tried to create file having 70K using following command:
dd if=/dev/zero of=/home/neo/somefile bs=1024 count=70
But he is unable to create the file. Make the user can create the file less then 70K.
Answer and Explanation:
Very Tricky question from redhat. Actually question is giving scenario to you to implement quota toneo
user. You should apply the quota to neo user on /home that neo user shouldn't occupied space more than
70K.
1. vi /etc/fstab
LABEL=/home /home ext3 defaults,usrquota 0 0 ¨¤ To enable th
quota on filesystem you should mount
the filesystem with usrquota for user quota and grpquota for group quota.
2. touch /home/aquota.user ¨¤Creating blank quota database file.
3. mount -o remount /home ¨¤ Remounting the /home with updated mount options. ou can verify that
/home is mounted with usrquota options or not using mount command.
4. quotacheck -u /home ¨¤ Initialization the quota on /home
5. edquota -u neo /home ¨¤ Quota Policy editor
See the snapshot
Disk quotas for user neo (uid 500):
Filesystem blocks soft hard inodes soft hard
/dev/mapper/vo-myvol 2 30 70 1 0 0
Can you set the hard limit 70 and soft limit as you think like 30.
Verify using the repquota /home command.
7.CORRECT TEXT
One Logical Volume is created named as myvol under vo volume group and is mounted. The Initial Size
of that Logical Volume is 124MB. Make successfully that the size of Logical Volume 245MB without losing
any data. The size of logical volume 240MB to 255MB will be acceptable.
Answer and Explanation:
1. First check the size of Logical Volume: lvdisplay /dev/vo/myvol
2. Increase the Size of Logical Volume: lvextend -L+121M /dev/vo/myvol
3. Make Available the size on online: resize2fs /dev/vo/myvol
4. Verify the Size of Logical Volume: lvdisplay /dev/vo/myvol
5. Verify that the size comes in online or not: df -h
We can extend the size of logical Volume using the lvextend command. As well as to decrease the
size of Logical Volume, use the lvresize command. In LVM v2 we can extend the size of Logical
Volume without unmount as well as we can bring the actual size of Logical Volume on online using
ext2online command.
8.CORRECT TEXT
Quota is implemented on /data but not working properly. Find out the
Problem and implement the quota to user1 to have a soft limit 60 inodes
(files) and hard limit of 70 inodes (files).
Answer and Explanation:
Quotas are used to limit a user's or a group of users' ability to consume disk space. This prevents a small
group of users from monopolizing disk capacity and potentially interfering with other users or the entire
system. Disk quotas are commonly used by ISPs, by Web hosting companies, on FTP sites, and on
corporate file servers to ensure continued availability of their systems.
Without quotas, one or more users can upload files on an FTP server to the point of filling a filesystem.
Once the affected partition is full, other users are effectively denied upload access to the disk. This is also
a reason to mount different filesystem directories on different partitions. For example, if you only had
partitions for your root (/) directory and swap space, someone uploading to your computer could fill up all
of the space in your root directory (/). Without at least a little free space in the root directory (/), your
system could become unstable or even crash.
You have two ways to set quotas for users. You can limit users by inodes or by kilobyte-sized disk blocks.
Every Linux file requires an inode. Therefore, you can limit users by the number of files or by absolute
space. You can set up different quotas for different filesystems. For example, you can set different quotas
for users on the /home and /tmp directories if they are mounted on their own partitions.
Limits on disk blocks restrict the amount of disk space available to a user on your system. Older versions
of Red Hat Linux included LinuxConf, which included a graphical tool to configure quotas.
As of this writing, Red Hat no longer has a graphical quota configuration tool. Today, you can configure
quotas on RHEL only through the command line interface.
1. vi /etc/fstab
/dev/hda11 /data ext3 defaults,usrquota 1 2
2. Either Reboot the System or remount the partition.
Mount -o remount /dev/hda11 /data
3. touch /data/aquota.user
4. quotacheck -ufm /data
5. quotaon -u /data
6. edquota -u user1 /data
and Specified the Soft limit and hard limit on opened file.
To verify either quota is working or not:
Soft limit specify the limit to generate warnings to users and hard limit can't cross by the user. Use the
quota command or repquota command to monitor the quota information.
9.CORRECT TEXT
One Logical Volume named lv1 is created under vg0. The Initial Size of that Logical Volume is 100MB.
Now you required the size 500MB. Make successfully the size of that Logical Volume 500M without losing
any data. As well as size should be increased online.
Answer and Explanation:
The LVM system organizes hard disks into Logical Volume (LV) groups. Essentially, physical hard disk
partitions (or possibly RAID arrays) are set up in a bunch of equal-sized chunks known as Physical
Extents (PE). As there are several other concepts associated with the LVM system, let's start with some
basic definitions:
* Physical Volume (PV) is the standard partition that you add to the LVM mix. Normally, a physical volume
is a standard primary or logical partition. It can also be a RAID array.
* Physical Extent (PE) is a chunk of disk space. Every PV is divided into a number of equal sized
PEs. Every PE in a LV group is the same size. Different LV groups can have different sized PEs.
* Logical Extent (LE) is also a chunk of disk space. Every LE is mapped to a specific PE.
* Logical Volume (LV) is composed of a group of LEs. You can mount a filesystem such as /home
and /var on an LV.
* Volume Group (VG) is composed of a group of LVs. It is the organizational group for LVM. Most
of the commands that you'll use apply to a specific VG.
1. Verify the size of Logical Volume: lvdisplay /dev/vg0/lv1
2. Verify the Size on mounted directory: df -h or df -h mounted directory name
3. Use : lvextend -L+400M /dev/vg0/lv1
4. resize2fs /dev/vg0/lv1 ¨¤ to bring extended size online.
5. Again Verify using lvdisplay and df -h command.
10.CORRECT TEXT
Create one partitions having size 100MB and mount it on /data.
Answer and Explanation:
1. Use fdisk /dev/hda ¨¤ To create new partition.
2. Type n ¨¤ For New partitions
3. It will ask for Logical or Primary Partitions. Press l for logical.
4. It will ask for the Starting Cylinder: Use the Default by pressing Enter Key.
5. Type the Size: +100M ¨¤ You can Specify either Last cylinder of Size here.
6. Press P to verify the partitions lists and remember the partitions name.
7. Press w to write on partitions table.
8. Either Reboot or use partprobe command.
9. Use mkfs -t ext3 /dev/hda?
Or
mke2fs -j /dev/hda? ¨¤ To create ext3 filesystem
10. vi /etc/fstab
Write:
/dev/hda? /data ext3 defaults 1 2
11. Verify by mounting on current Sessions also:
mount /dev/hda? /data
11 CORRECT TEXT
You are new System Administrator and from now you are going to handle the system and your
main task is Network monitoring, Backup and Restore. But you don't know the root password.
Change the root password to redhat and login in default Runlevel.
Answer and Explanation:
When you Boot the System, it starts on default Runlevel specified in /etc/inittab:
Id:?:initdefault:
When System Successfully boot, it will ask for username and password. But you don't know the
root's password. To change the root password you need to boot the system into single user mode.
You can pass the kernel arguments from the boot loader.
1. Restart the System.
2. You will get the boot loader GRUB screen.
3. Press a and type 1 or s for single mode
ro root=LABEL=/ rhgb queit s
4. System will boot on Single User mode.
5. Use passwd command to change.
6. Press ctrl+d
12 CORRECT TEXT
There are more then 400 Computers in your Office. You are appointed as a System Administrator.
But you don't have Router. So, you are going to use your One Linux Server as a Router. How will you
enable IP packets forward?
Answer and Explanation:
1. /proc is the virtual filesystem, we use /proc to modify the kernel parameters at running time.
# echo "1" >/proc/sys/net/ipv4/ip_forward
2. /etc/sysctl.conf ¨¤ when System Reboot on next time, etc/rc.d/rc.sysinit scripts reads the file
/etc/sysctl.conf. To enable the IP forwarding on next reboot also you need to set the parameter.
net.ipv4.ip_forward=1
Here 0 means disable, 1 means enable.
13.CORRECT TEXT
You Completely Install the Redhat Enterprise Linux 5 on your System. While start the system, it's
giving error to load X window System. How will you fix that problem and make boot successfully
run X Window System.
Answer and Explanation:
Think while Problems occurred on booting System on Runlevel 5 (X Window)./tmp is full ornotQuota is
already reachedVideo card or resolution or monitor is misconfigured.xfs service is running or not.
Do These:
1. df -h /tmp ¨¤ /tmp is full remove the unnecessary filequota username ¨¤ if quota is alread
reached remove unnecessary file from home directory.Boot the System in runlevel 3.¨¤ you can
pass the Kernel Argument from boot loader.Use command: system-config-display ¨¤ It will display a
dialog to configure the monitor, Video card, resolution etc.Set the Default Runlevel 5 in /etc/inittab
id:5:initdefault:
6. Reboot the System you will get the GUI login Screen.
14 CORRECT TEXT
There are two different networks, 192.168.0.0/24 and 192.168.1.0/24. Your System is in
192.168.0.0/24 Network. One RHEL 5 Installed System is going to use as a Router. All required
configuration is already done on Linux Server. Where 192.168.0.254 and 192.168.1.254 IP
Address are assigned on that Server. How will make successfully ping to 192.168.1.0/24
Network's Host?
Answer and Explanation:
1. vi /etc/sysconfig/network
GATEWAY=192.168.0.254
OR
vi /etc/sysconf/network-scripts/ifcfg-eth0
DEVICE=eth0
BOOTPROTO=static
ONBOOT=yes
IPADDR=192.168.0.?
NETMASK=255.255.255.0
GATEWAY=192.168.0.254
2. service network restart
15 CORRECT TEXT
Make a swap partition having 100MB. Make Automatically Usable at System Boot Time.
Answer and Explanation:
1. Use fdisk /dev/hda ¨¤ To create new partition.
2. Type n ¨¤ For New partition
3. It will ask for Logical or Primary Partitions. Press l for logical.
4. It will ask for the Starting Cylinder: Use the Default by pressing Enter Key.
5. Type the Size: +100M ¨¤ You can Specify either Last cylinder of Size here.
6. Press P to verify the partitions lists and remember the partitions name. Default System ID is 83
that means Linux Native.
7. Type t to change the System ID of partition.
8. Type Partition Number
9. Type 82 that means Linux Swap.
10. Press w to write on partitions table.
11. Either Reboot or use partprobe command.
12. mkswap /dev/hda?¨¤ To create Swap File system on partition.
13. swapon /dev/hda?¨¤ To enable the Swap space from partition.
14. free -m ¨¤ Verify Either Swap is enabled or not.
15. vi /etc/fstab
/dev/hda? swap swap defaults 0 0
16. Reboot the System and verify that swap is automatically enabled or not.
16.CORRECT TEXT
You are a System administrator. Using Log files very easy to monitor the system. Now there are 50
servers running as Mail, Web, Proxy, DNS services etc. You want to centralize the logs from allservers
into on LOG Server. How will you configure the LOG Server to accept logs from remote host ?
Answer and Explanation:
By Default system accept the logs only generated from local host. To accept the Log from otherhost
configure:
1. vi /etc/sysconfig/syslog
SYSLOGD_OPTIONS="-m 0 -r"
Where
-m 0 disables 'MARK' messages.
-r enables logging from remote machines
-x disables DNS lookups on messages recieved with -r
2. service syslog restart
17 CORRECT TEXT
You are giving the debug RHCT exam. The examiner told you that the password of root is redhat.
When you tried to login displays the error message and redisplayed the login screen. You
changed the root password, again unable to login as a root. How will you make Successfully Login as a
root.
Answer and Explanation:
When root unable to login into the system think:
1. Is password correct?
2. Is account expired?
3. Is terminal Blocked?
Do these Steps:Boot the System on Single user mode.Change the passwordCheck the account expire
date by using chage -l root command.
If account is expired, set net expire date: chage -E "NEVER" root
1. Check the file /etc/securetty ¨¤ Which file blocked to root login from certain terminal
2. If terminal is deleted or commented write new or uncomment.
3. Reboot the system and login as a root.

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NO.8 CORRECT TEXT
Add a new logical partition having size 100MB and create the /data which will be the mount point for the
new partition.
Answer and Explanation:Use fdisk /dev/hda ¨¤ To create new parition.Type n ¨¤ For New
partitionsIt will ask for Logical or Primary Partitions. Press l for logical.It will ask for the Starting Cylinder:
Use the Default by pressing Enter Key.Type the Size: +100M ¨¤ You can Specify either Last cylinder of
Size here.Press P to verify the partitions lists and remember the partitions name.Press w to write on
partitions table.Either Reboot or use partprobe command.Use mkfs -t
ext3 /dev/hda?Ormke2fs -j /dev/hda? ¨¤ To create ext3 filesystem.vi /etc/fstabWrite:/dev/hda? /data
ext3 defaults 0 0Verify by mounting on current Sessions also:mount /dev/hda? /data

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NO.9 CORRECT TEXT
One Package named zsh is dump on ftp://server1.example.com under /pub/updates directory and your
FTP server is 192.168.0.254. Install the package zsh.
Answer and Explanation:
1. rpm -ivh ftp://server1/example.com/pub/updates/zsh-*
or
1. Login to ftp server : ftp ftp://server1.example.com using anonymous user.
2. Change the directory: cd pub and cd updates
3. Download the package: mget zsh-*
4. Quit from the ftp prompt : bye
5. Install the package
6. rpm -ivh zsh-*
7. Verify either package is installed or not : rpm -q zsh

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NO.10 CORRECT TEXT
You are giving RHCT Exam and in your Exam paper there is a question written, make successfully ping to
192.168.0.254.
Answer and Explanation:
In Network problem thinks to check:
1. IP Configuration: use ifconfig command either IP is assigned to interface or not?
2. Default Gateway is set or not?
3. Hostname is set or not?
4. Routing problem is there?
5. Device Driver Module is loaded or not?
6. Device is activated or not?
Check In this way:
1. use ifconfig command and identify which IP is assigned or not.
2. cat /etc/sysconfig/network ¨¤ What, What is written here. Actually here are these parameters
NETWORKING=yes or no
GATEWAY=x.x.x.x
HOSTNAME=?
NISDOMAIN=?
-Correct the file
3. Use vi /etc/sysconfig/network-scirpts/ifcfg-eth0 and check the proper options
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=static
IPADDR=x.x.x.x
NETMAKS=x.x.x.x
GATEWAY=x.x.x.x
4. Use service network restart or start command

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NO.11 CORRECT TEXT
Make Successfully Resolve to server1.example.com where DNS Server is 192.168.0.254.
Answer and Explanation: 1. vi /etc/resolv.conf
Write : nameserver 192.168.0.254

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NO.12 mke2fs -j /dev/hda? ¨¤ To create ext3 filesystem.

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NO.13 CORRECT TEXT
There are two different networks 192.168.0.0/24 and 192.168.1.0/24. Where 192.168.0.254 and
192.168.1.254 IP Address are assigned on Server. Verify your network settings by pinging
192.168.1.0/24 Network's Host.
Answer and Explanation:
1. vi /etc/sysconfing/network
NETWORKING=yes
HOSTNAME=station?.example.com
GATEWAY=192.168.0.254
2. service network restart
Or
1. vi /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=static
IPADDR=X.X.X.X
NETMASK=X.X.X.X
GATEWAY=192.168.0.254
2. ifdown eth0
3. ifup eth0

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NO.14 Or

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NO.15 mkdir /mnt/neo

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NO.16 CORRECT TEXT
Dig Server1.example.com, Resolve to successfully through DNS Where DNS server is
172.24.254.254
Answer and Explanation:
#vi /etc/resolv.conf
nameserver 172.24.254.254
# dig server1.example.com
#host server1.example.com
DNS is the Domain Name System, which maintains a database that can help your computer
translate domain names such as www.redhat.com to IP addresses such as 216.148.218.197. As
no individual DNS server is large enough to keep a database for the entire Internet, they can refer
requests to other DNS servers.
DNS is based on the named daemon, which is built on the BIND (Berkeley Internet Name Domain)
package developed through the Internet Software Consortium
Users wants to access by name so DNS will interpret the name into ip address. You need to specify the
Address if DNS server in each and every client machine. In Redhat Enterprise Linux, you need to specify
the DNS server into /etc/resolv.conf file.
After Specifying the DNS server address, you can verify using host, dig and nslookup commands.

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NO.17 Either Reboot or use partprobe command.

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NO.18 It will ask for the Starting Cylinder: Use the Default by pressing Enter Key.

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NO.19 CORRECT TEXT
Your System is configured in 192.168.0.0/24 Network and your nameserver is 192.168.0.254.
Make successfully resolve to server1.example.com.
Answer and Explanation:
Very Easy question, nameserver is specified in question,
1. vi /etc/resolv.conf
nameserver 192.168.0.254
2. host server1.example.com

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NO.20 CORRECT TEXT
One Logical Volume is created named as myvol under vo volume group and is mounted. The Initial Size
of that Logical Volume is 400MB. Make successfully that the size of Logical Volume 200MB without losing
any data. The size of logical volume 200MB to 210MB will be acceptable.
Answer and Explanation:
1. First check the size of Logical Volume: lvdisplay /dev/vo/myvol
2. Make sure that the filesystem is in a consistent state before reducing:
# fsck -f /dev/vo/myvol
3. Now reduce the filesystem by 200MB.
# resize2fs /dev/vo/myvol 200M
4. It is now possible to reduce the logical volume.
#lvreduce /dev/vo/myvol -L 200M
4. Verify the Size of Logical Volume: lvdisplay /dev/vo/myvol
5. Verify that the size comes in online or not: df -h

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NO.21 CORRECT TEXT
Create the partition having 100MB size and mount it on /mnt/neo
Answer and Explanation:
1. Use fdisk /dev/hda ¨¤ To create new partition.
2. Type n ¨¤ For New partitions
3. It will ask for Logical or Primary Partitions. Press l for logical.

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NO.22 CORRECT TEXT
Change the root Password to redtophat
Answer and Explanation:Boot the system in Single user modeUse the passwd command

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NO.23 CORRECT TEXT
There is a server having 172.24.254.254 and 172.25.254.254. Your System lies on 172.24.0.0/16.
Make successfully ping to 172.25.254.254 by Assigning following IP: 172.24.0.x Where x is your station
number.
Answer and Explanation:
1. vi /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
BOOTPROTO=static
ONBOOT=yes
IPADDR=x.x.x.x
NETMASK=x.x.x.x
2. Enter the IP Address as given station number by your examiner: example: 172.24.0.1
3. Enter Subnet Mask
4. Enter Default Gateway and primary name server
5. press on ok
6. ifdown eth0
7. ifup eth0
8. verify using ifconfig
In the lab server is playing the role of router, IP forwarding is enabled. Just set the Correct IP and gateway,
you can ping to 172.25.254.254.

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NO.24 Press P to verify the partitions lists and remember the partitions name.

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NO.25 Write:

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NO.26 Verify by mounting on current Sessions also:

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NO.27 Press w to write on partitions table.

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NO.28 CORRECT TEXT
Set the Hostname station?.example.com where ? is your Host IP Address.
Answer and Explanation:
1. hostname station?.example.com ¨¤ This will set the host name only for current session. To set
hostname permanently.
2. vi /etc/sysconfig/network
HOSTNAME=station?.example.com
3. service network restart

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NO.29 CORRECT TEXT
The System you are using is for NFS (Network File Services). Some important data are shared from your
system. Make automatically start the nfs and portmap services at boot time.
Answer and Explanation:
We can control the services for current session and for next boot time also. For current Session,we use
service servicename start or restart or stop or status. For automatically on next reboot time:
1. chkconfig servicename on or off
eg: chkconfig nfs on
chkconfig portmap on
or
ntsysv
Select the nfs and portmap services.
2. Reboot the system and identify whether services are running or not.

RedHat   RH302 examen   certification RH302   RH302 examen

NO.30 CORRECT TEXT
Your system is giving error while booting on Runlevel 5 . Make successfully boot your system in
runlevel 5.
Answer and Explanation:
While you load the X Window System, you will get the problem. To troubleshoot follow the
following steps:
1. Check the /tmp is full ?
2. Check your quota, hard limit is already crossed ?
3. Check xfs service is running ?
4. Boot the system on runlevel 3 and execute the system-config-display command
5. Edit the /etc/inittab to set default runlevel 5.
id:5:initdefault:

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Code d'Examen: 1Z1-051
Nom d'Examen: Oracle (Oracle Database: SQL Fundamentals I)
Questions et réponses: 254 Q&As

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NO.1 Using the CUSTOMERS table, you need to generate a report that shows 50% of each credit
amount in each income level. The report should NOT show any repeated credit amounts in each income
level.
Which query would give the required result?
A. SELECT cust_income_level, DISTINCT cust_credit_limit * 0.50
AS "50% Credit Limit"
FROM customers;
B. SELECT DISTINCT cust_income_level, DISTINCT cust_credit_limit * 0.50
AS "50% Credit Limit"
FROM customers;
C. SELECT DISTINCT cust_income_level ' ' cust_credit_limit * 0.50
AS "50% Credit Limit"
FROM customers;
D. SELECT cust_income_level ' ' cust_credit_limit * 0.50 AS "50% Credit Limit"
FROM customers;
Answer: C

Oracle   certification 1Z1-051   1Z1-051   1Z1-051   1Z1-051 examen   1Z1-051

NO.2 Examine the structure of the SHIPMENTS table:
name Null Type
PO_ID NOT NULL NUMBER(3)
PO_DATE NOT NULL DATE
SHIPMENT_DATE NOT NULL DATE
SHIPMENT_MODE VARCHAR2(30)
SHIPMENT_COST NUMBER(8,2)
You want to generate a report that displays the PO_ID and the penalty amount to be paid if the
SHIPMENT_DATE is later than one month from the PO_DATE. The penalty is $20 per day.
Evaluate the following two queries:
SQL> SELECT po_id, CASE
WHEN MONTHS_BETWEEN (shipment_date,po_date)>1 THEN
TO_CHAR((shipment_date - po_date) * 20) ELSE 'No Penalty' END PENALTY
FROM shipments;
SQL>SELECT po_id, DECODE
(MONTHS_BETWEEN (po_date,shipment_date)>1,
TO_CHAR((shipment_date - po_date) * 20), 'No Penalty') PENALTY
FROM shipments;
Which statement is true regarding the above commands?
A. Both execute successfully and give correct results.
B. Only the first query executes successfully but gives a wrong result.
C. Only the first query executes successfully and gives the correct result.
D. Only the second query executes successfully but gives a wrong result.
E. Only the second query executes successfully and gives the correct result.
Answer: C

Oracle   1Z1-051   1Z1-051   certification 1Z1-051

NO.3 View the Exhibit; e xamine the structure of the PROMOTIONS table.
Each promotion has a duration of at least seven days .
Your manager has asked you to generate a report, which provides the weekly cost for each promotion
done to l date.
Which query would achieve the required result?
A. SELECT promo_name, promo_cost/promo_end_date-promo_begin_date/7
FROM promotions;
B. SELECT promo_name,(promo_cost/promo_end_date-promo_begin_date)/7
FROM promotions;
C. SELECT promo_name, promo_cost/(promo_end_date-promo_begin_date/7)
FROM promotions;
D. SELECT promo_name, promo_cost/((promo_end_date-promo_begin_date)/7)
FROM promotions;
Answer: D

Oracle examen   certification 1Z1-051   1Z1-051 examen   certification 1Z1-051

NO.4 View the E xhibit and examine the data in the EMPLOYEES table.
You want to generate a report showing the total compensation paid to each employee to date.
You issue the following query:
SQL>SELECT ename ' joined on ' hiredate
', the total compensation paid is '
TO_CHAR(ROUND(ROUND(SYSDATE-hiredate)/365) * sal + comm)
"COMPENSATION UNTIL DATE"
FROM employees;
What is the outcome?
A. It generates an error because the alias is not valid.
B. It executes successfully and gives the correct output.
C. It executes successfully but does not give the correct output.
D. It generates an error because the usage of the ROUND function in the expression is not valid.
E. It generates an error because the concatenation operator can be used to combine only two items.
Answer: C

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NO.5 You need to extract details of those products in the SALES table where the PROD_ID column
contains the string '_D123'.
Which WHERE clause could be used in the SELECT statement to get the required output?
A. WHERE prod_id LIKE '%_D123%' ESCAPE '_'
B. WHERE prod_id LIKE '%\_D123%' ESCAPE '\'
C. WHERE prod_id LIKE '%_D123%' ESCAPE '%_'
D. WHERE prod_id LIKE '%\_D123%' ESCAPE '\_'
Answer: B

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NO.6 Which two statements are true regarding single row functions? (Choose two.)
A. They a ccept only a single argument.
B. They c an be nested only to two levels.
C. Arguments can only be column values or constants.
D. They a lways return a single result row for every row of a queried table.
E. They c an return a data type value different from the one that is referenced.
Answer: DE

Oracle   1Z1-051   1Z1-051   1Z1-051 examen

NO.7 Evaluate the following query:
SELECT INTERVAL '300' MONTH,
INTERVAL '54-2' YEAR TO MONTH,
INTERVAL '11:12:10.1234567' HOUR TO SECOND
FROM dual;
What is the correct output of the above query?
A. +25-00 , +54-02, +00 11:12:10.123457
B. +00-300, +54-02, +00 11:12:10.123457
C. +25-00 , +00-650, +00 11:12:10.123457
D. +00-300 , +00-650, +00 11:12:10.123457
Answer: A

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NO.8 Which two statements are true regarding the USING and ON clauses in table joins? (Choose two.)
A. Both USING and ON clauses can be used for equijoins and nonequijoins.
B. A maximum of one pair of columns can be joined between two tables using the ON clause.
C. The ON clause can be used to join tables on columns that have different names but compatible data
types.
D. The WHERE clause can be used to apply additional conditions in SELECT statements containing the
ON or the USING clause.
Answer: CD

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NO.9 Which statement is true regarding the INTERSECT operator?
A. It ignores NULL values.
B. Reversing the order of the intersected tables alters the result.
C. The names of columns in all SELECT statements must be identical.
D. The number of columns and data types must be identical for all SELECT statements in the query.
Answer: D

Oracle   1Z1-051   1Z1-051

NO.10 Which three statements are true regarding the data types in Oracle Database 10g/11g? (Choose
three.)
A. Only one LONG column can be used per table.
B. A TIMESTAMP data type column stores only time values with fractional seconds.
C. The BLOB data type column is used to store binary data in an operating system file.
D. The minimum column width that can be specified for a VARCHAR2 data type column is one.
E. The value for a CHAR data type column is blank-padded to the maximum defined column width.
Answer: ADE

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NO.11 View the Exhibit and examine the structure of the PRODUCTS table.
You need to generate a report in the following format:
CATEGORIES
5MP Digital Photo Camera's category is Photo
Y Box's category is Electronics
Envoy Ambassador's category is Hardware
Which two queries would give the required output? (Choose two.)
A. SELECT prod_name q'''s category is ' prod_category CATEGORIES
FROM products;
B. SELECT prod_name q'['s ]'category is ' prod_category CATEGORIES
FROM products;
C. SELECT prod_name q'\'s\' ' category is ' prod_category CATEGORIES
FROM products;
D. SELECT prod_name q'<'s >' 'category is ' prod_category CATEGORIES
FROM products;
Answer: CD

Oracle   1Z1-051 examen   1Z1-051

NO.12 You need to produce a report where each customer's credit limit has been incremented by $1000. In
the output, t he customer's last name should have the heading Name and the incremented credit limit
should be labeled New Credit Limit. The column headings should have only the first letter of each word in
uppercase .
Which statement would accomplish this requirement?
A. SELECT cust_last_name Name, cust_credit_limit + 1000
"New Credit Limit"
FROM customers;
B. SELECT cust_last_name AS Name, cust_credit_limit + 1000
AS New Credit Limit
FROM customers;
C. SELECT cust_last_name AS "Name", cust_credit_limit + 1000
AS "New Credit Limit"
FROM customers;
D. SELECT INITCAP(cust_last_name) "Name", cust_credit_limit + 1000
INITCAP("NEW CREDIT LIMIT")
FROM customers;
Answer: C

Oracle examen   1Z1-051   1Z1-051

NO.13 Which SQL statements would display the value 1890.55 as $1,890.55? (Choose three .)
A. SELECT TO_CHAR(1890.55,'$0G000D00')
FROM DUAL;
B. SELECT TO_CHAR(1890.55,'$9,999V99')
FROM DUAL;
C. SELECT TO_CHAR(1890.55,'$99,999D99')
FROM DUAL;
D. SELECT TO_CHAR(1890.55,'$99G999D00')
FROM DUAL;
E. SELECT TO_CHAR(1890.55,'$99G999D99')
FROM DUAL;
Answer: ADE

Oracle examen   certification 1Z1-051   1Z1-051 examen   1Z1-051 examen

NO.14 View the Exhibit and examine the structure of the PRODUCTS table.
All products have a list price.
You issue the following command to display the total price of each product after a discount of 25% and a
tax of 15% are applied on it. Freight charges of $100 have to be applied to all the products.
SQL>SELECT prod_name, prod_list_price -(prod_list_price*(25/100))
+(prod_list_price -(prod_list_price*(25/100))*(15/100))+100
AS "TOTAL PRICE"
FROM products;
What would be the outcome if all the parenthese s are removed from the above statement?
A. It produces a syntax error.
B. The result remains unchanged.
C. The total price value would be lower than the correct value.
D. The total price value would be higher than the correct value.
Answer: B

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NO.15 View the Exhibit and examine the structure of the SALES, CUSTOMERS, PRODUCTS, and TIMES
tables.
The PROD_ID column is the foreign key in the SALES table, which references the PRODUCTS table.
Similarly, the CUST_ID and TIME_ID columns are also foreign keys in the SALES table referencing the
CUSTOMERS and TIMES tables, respectively.
Evaluate the following CREATE TABLE command:
CREATE TABLE new_sales(prod_id, cust_id, order_date DEFAULT SYSDATE)
AS
SELECT prod_id, cust_id, time_id
FROM sales;
Which statement is true regarding the above command?
A. The NEW_SALES table would not get created because the DEFAULT value cannot be specified in the
column definition.
B. The NEW_SALES table would get created and all the NOT NULL constraints defined on the specified
columns would be passed to the new table.
C. The NEW_SALES table would not get created because the column names in the CREATE TABLE
command and the SELECT clause do not match.
D. The NEW_SALES table would get created and all the FOREIGN KEY constraints defined on the
specified columns would be passed to the new table.
Answer: B

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NO.16 Examine the structure of the PROMOTIONS table:
name Null Type
PROMO_ID NOT NULL NUMBER(6)
PROMO_NAME NOT NULL VARCHAR2(30)
PROMO_CATEGORY NOT NULL VARCHAR2(30)
PROMO_COST NOT NULL NUMBER(10,2)
The management wants to see a report of unique promotion costs in each promotion category.
Which query would achieve the required result?
A. SELECT DISTINCT promo_cost, promo_category FROM promotions;
B. SELECT promo_category, DISTINCT promo_cost FROM promotions;
C. SELECT DISTINCT promo_cost, DISTINCT promo_category FROM promotions;
D. SELECT DISTINCT promo_category, promo_cost FROM promotions ORDER BY 1;
Answer: D

Oracle   certification 1Z1-051   1Z1-051 examen   1Z1-051

NO.17 View the Exhibit and examine the structure of the CUSTOMERS table.
Which two tasks would require subqueries or joins to be executed in a single statement? (Choose two.)
A. listing of customers who do not have a credit limit and were born before 1980
B. finding the number of customers, in each city, whose marital status is 'married'
C. finding the average credit limit of male customers residing in 'Tokyo' or 'Sydney'
D. listing of those customers whose credit limit is the same as the credit limit of customers residing in the
city 'Tokyo'
E. finding the number of customers, in each city, whose credit limit is more than the average credit limit of
all the customers
Answer: DE

Oracle   1Z1-051   certification 1Z1-051   1Z1-051   1Z1-051

NO.18 View the Exhibit to examine the description for the SALES table.
Which views can have all DML operations performed on it? (Choose all that apply.)
A. CREATE VIEW v3
AS SELECT * FROM SALES
WHERE cust_id = 2034
WITH CHECK OPTION;
B. CREATE VIEW v1
AS SELECT * FROM SALES
WHERE time_id <= SYSDATE - 2*365
WITH CHECK OPTION;
C. CREATE VIEW v2
AS SELECT prod_id, cust_id, time_id FROM SALES
WHERE time_id <= SYSDATE - 2*365
WITH CHECK OPTION;
D. CREATE VIEW v4
AS SELECT prod_id, cust_id, SUM(quantity_sold) FROM SALES
WHERE time_id <= SYSDATE - 2*365
GROUP BY prod_id, cust_id
WITH CHECK OPTION;
Answer: AB

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NO.19 View the Exhibit and examine the data in the CUSTOMERS table.
Evaluate the following query:
SQL> SELECT cust_name AS "NAME", cust_credit_limit/2 AS MIDPOINT,MIDPOINT+100 AS "MAX
LOWER LIMIT"
FROM customers;
The above query produces an error on execution.
What is the reason for the error?
A. An alias cannot be used in an expression.
B. The a lias NAME should not be enclosed with in double quotation marks .
C. The MIDPOINT+100 expression gives an error because CUST_CREDIT_LIMIT contains NULL
values.
D. The a lias MIDPOINT should be enclosed with in double quotation marks for the
CUST_CREDIT_LIMIT/2 expression .
Answer: A

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NO.20 Evaluate the following query:
SQL> SELECT promo_name q'{'s start date was }' promo_begin_date
AS "Promotion Launches"
FROM promotions;
What would be the outcome of the above query?
A. It produces an error because flower braces have been used.
B. It produces an error because the data types are not matching.
C. It executes successfully and introduces an 's at the end of each promo_name in the output.
D. It executes successfully and displays the literal " {'s start date was } " for each row in the output.
Answer: C

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Nom d'Examen: Oracle (Introduction to Oracle9i: SQL)
Questions et réponses: 110 Q&As

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NO.1 A SELECT statement can be used to perform these three functions:
1. Choose rows from a table.
2. Choose columns from a table.
3. Bring together data that is stored in different tables by creating a link between them.
Which set of keywords describes these capabilities?
A.difference, projection, join
B.selection, projection, join
C.selection, intersection, join
D.intersection, projection, join
E.difference, projection, product
Answer: B

Oracle examen   1Z0-007   1Z0-007   1Z0-007

NO.2 Which are iSQL*Plus commands? (Choose all that apply.)
A.INSERT
B.UPDATE
C.SELECT
D.DESCRIBE
E.DELETE
F.RENAME
Answer: D

Oracle   1Z0-007   1Z0-007 examen   1Z0-007   certification 1Z0-007

NO.3 Which is an iSQL*Plus command?
A.INSERT
B.UPDATE
C.SELECT
D.DESCRIBE
E.DELETE
F.RENAME
Answer: D

Oracle   1Z0-007 examen   1Z0-007   1Z0-007 examen

NO.4 Which two statements are true about constraints? (Choose two.)
A.The UNIQUE constraint does not permit a null value for the column.
B.A UNIQUE index gets created for columns with PRIMARY KEY and UNIQUE constraints.
C.The PRIMARY KEY and FOREIGN KEY constraints create a UNIQUE index.
D.The NOT NULL constraint ensures that null values are not permitted for the column.
Answer: BD

Oracle examen   certification 1Z0-007   1Z0-007

NO.5 In which three cases would you use the USING clause? (Choose three.)
A.You want to create a nonequijoin.
B.The tables to be joined have multiple NULL columns.
C.The tables to be joined have columns of the same name and different data types.
D.The tables to be joined have columns with the same name and compatible data types.
E.You want to use a NATURAL join, but you want to restrict the number of columns in the join condition.
Answer: CDE

Oracle   certification 1Z0-007   1Z0-007   1Z0-007

NO.6 Click the Exhibit button and examine the data in the EMPLOYEES table.
Which three subqueries work? (Choose three.)
A.SELECT *
FROM employees
where salary > (SELECT MIN(salary)
FROM employees
GROUP BY department_id);
B.SELECT *
FROM employees
WHERE salary = (SELECT AVG(salary)
FROM employees
GROUP BY department_id);
C.SELECT distinct department_id
FROM employees
WHERE salary > ANY (SELECT AVG(salary)
FROM employees
GROUP BY department_id);
D.SELECT department_id
FROM employees
WHERE salary > ALL (SELECT AVG(salary)
FROM employees
GROUP BY department_id);
E.SELECT last_name
FROM employees
WHERE salary > ANY (SELECT MAX(salary)
FROM employees
GROUP BY department_id);
F.SELECT department_id
FROM employees
WHERE salary > ALL (SELECT AVG(salary)
FROM employees
GROUP BY AVG(SALARY));
Answer: CDE

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NO.7 What does the FORCE option for creating a view do?
A.creates a view with constraints
B.creates a view even if the underlying parent table has constraints
C.creates a view in another schema even if you don't have privileges
D.creates a view regardless of whether or not the base tables exist
Answer: D

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NO.8 You need to design a student registration database that contains several tables storing academic
information.
The STUDENTS table stores information about a student. The STUDENT_GRADES table stores
information about the student's grades. Both of the tables have a column named STUDENT_ID. The
STUDENT_ID column in the STUDENTS table is a primary key.
You need to create a foreign key on the STUDENT_ID column of the STUDENT_GRADES table that
points to the STUDENT_ID column of the STUDENTS table. Which statement creates the foreign key?
A.CREATE TABLE student_grades
(student_id NUMBER(12),
semester_end DATE,
gpa NUMBER(4,3),
CONSTRAINT student_id_fk REFERENCES (student_id)
FOREIGN KEY students(student_id));
B.CREATE TABLE student_grades
(student_id NUMBER(12),
semester_end DATE,
gpa NUMBER(4,3),
student_id_fk FOREIGN KEY (student_id)
REFERENCES students(student_id));
C.CREATE TABLE student_grades
(student_id NUMBER(12),
semester_end DATE,
gpa NUMBER(4,3),
CONSTRAINT FOREIGN KEY (student_id)
REFERENCES students(student_id));
D.CREATE TABLE student_grades
(student_id NUMBER(12),
semester_end DATE,
gpa NUMBER(4,3),
CONSTRAINT student_id_fk FOREIGN KEY (student_id)
REFERENCES students(student_id));
Answer: D

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NO.9 Which view should a user query to display the columns associated with the constraints on a table
owned by the user?
A.USER_CONSTRAINTS
B.USER_OBJECTS
C.ALL_CONSTRAINTS
D.USER_CONS_COLUMNS
E.USER_COLUMNS
Answer: D

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NO.10 The STUDENT_GRADES table has these columns:
STUDENT_ID NUMBER(12)
SEMESTER_END DATE
GPA NUMBER(4,3)
The registrar requested a report listing the students' grade point averages (GPA) sorted from highest
grade point average to lowest.
Which statement produces a report that displays the student ID and GPA in the sorted order requested by
the registrar?
A.SELECT student_id, gpa
FROM student_grades
ORDER BY gpa ASC;
B.SELECT student_id, gpa
FROM student_grades
SORT ORDER BY gpa ASC;
C.SELECT student_id, gpa
FROM student_grades
SORT ORDER BY gpa;
D.SELECT student_id, gpa
FROM student_grades
ORDER BY gpa;
E.SELECT student_id, gpa
FROM student_grades
SORT ORDER BY gpa DESC;
F.SELECT student_id, gpa
FROM student_grades
ORDER BY gpa DESC;
Answer: F

Oracle   1Z0-007   1Z0-007

NO.11 Which two are attributes of iSQL*Plus? (Choose two.)
A.iSQL*Plus commands cannot be abbreviated.
B.iSQL*Plus commands are accessed from a browser.
C.iSQL*Plus commands are used to manipulate data in tables.
D.iSQL*Plus commands manipulate table definitions in the database.
E.iSQL*Plus is the Oracle proprietary interface for executing SQL statements.
Answer: BE

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NO.12 The CUSTOMERS table has these columns:
CUSTOMER_ID NUMBER(4) NOT NULL
CUSTOMER_NAME VARCHAR2(100) NOT NULL
CUSTOMER_ADDRESS VARCHAR2(150)
CUSTOMER_PHONE VARCHAR2(20)
You need to produce output that states "Dear Customer customer_name, ".
The customer_name data values come from the CUSTOMER_NAME column in the CUSTOMERS table.
Which statement produces this output?
A.SELECT dear customer, customer_name,
B.SELECT "Dear Customer", customer_name || ','
FROM customers;
C.SELECT 'Dear Customer ' || customer_name ','
FROM customers;
D.SELECT 'Dear Customer ' || customer_name || ','
FROM customers;
E.SELECT "Dear Customer " || customer_name || ","
FROM customers;
F.SELECT 'Dear Customer ' || customer_name || ',' ||
FROM customers;
Answer: D

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NO.13 Evaluate this SQL statement:
SELECT e.EMPLOYEE_ID,e.LAST_NAME,e.DEPARTMENT_ID, d.DEPARTMENT_NAME
FROM EMPLOYEES e, DEPARTMENTS d
WHERE e.DEPARTMENT_ID = d.DEPARTMENT_ID;
In the statement, which capabilities of a SELECT statement are performed?
A.selection, projection, join
B.difference, projection, join
C.selection, intersection, join
D.intersection, projection, join
E.difference, projection, product
Answer: A

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NO.14 Which SQL statement defines a FOREIGN KEY constraint on the DEPTNO column of the EMP table?
A.CREATE TABLE EMP
(empno NUMBER(4),
ename VARCHAR2(35),
deptno NUMBER(7,2) NOT NULL,
CONSTRAINT emp_deptno_fk FOREIGN KEY deptno
REFERENCES dept deptno);
B.CREATE TABLE EMP
(empno NUMBER(4),
ename VARCHAR2(35),
deptno NUMBER(7,2)
CONSTRAINT emp_deptno_fk REFERENCES dept (deptno));
C.CREATE TABLE EMP
(empno NUMBER(4),
ename VARCHAR2(35),
deptno NUMBER(7,2) NOT NULL,
CONSTRAINT emp_deptno_fk REFERENCES dept (deptno)
FOREIGN KEY (deptno));
D.CREATE TABLE EMP
(empno NUMBER(4),
ename VARCHAR2(35),
deptno NUMBER(7,2) FOREIGN KEY
CONSTRAINT emp_deptno_fk REFERENCES dept (deptno));
Answer: B

Oracle   1Z0-007   certification 1Z0-007

NO.15 Evaluate this SQL statement:
SELECT e.employee_id, (.15* e.salary) + (.5 * e.commission_pct)
+ (s.sales_amount * (.35 * e.bonus)) AS CALC_VALUE
FROM employees e, sales s
WHERE e.employee_id = s.emp_id;
What will happen if you remove all the parentheses from the calculation?
A.The value displayed in the CALC_VALUE column will be lower.
B.The value displayed in the CALC_VALUE column will be higher.
C.There will be no difference in the value displayed in the CALC_VALUE column.
D.An error will be reported.
Answer: C

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NO.16 The CUSTOMERS table has these columns:
CUSTOMER_ID NUMBER(4) NOT NULL
CUSTOMER_NAME VARCHAR2(100) NOT NULL
STREET_ADDRESS VARCHAR2(150)
CITY_ADDRESS VARCHAR2(50)
STATE_ADDRESS VARCHAR2(50)
PROVINCE_ADDRESS VARCHAR2(50)
COUNTRY_ADDRESS VARCHAR2(50)
POSTAL_CODE VARCHAR2(12)
CUSTOMER_PHONE VARCHAR2(20)
The CUSTOMER_ID column is the primary key for the table.
You need to determine how dispersed your customer base is. Which expression finds the number of
different countries represented in the CUSTOMERS table?
A.COUNT(UPPER(country_address))
B.COUNT(DIFF(UPPER(country_address)))
C.COUNT(UNIQUE(UPPER(country_address)))
D.COUNT DISTINCT UPPER(country_address)
E.COUNT(DISTINCT (UPPER(country_address)))
Answer: E

Oracle examen   1Z0-007 examen   1Z0-007

NO.17 Evaluate this SQL statement:
SELECT ename, sal, 12*sal+100
FROM emp;
The SAL column stores the monthly salary of the employee. Which change must be made to the above
syntax to calculate the annual compensation as "monthly salary plus a monthly bonus of $100, multiplied
by 12"?
A.No change is required to achieve the desired results.
B.SELECT ename, sal, 12*(sal+100)
FROM emp;
C.SELECT ename, sal, (12*sal)+100
FROM emp;
D.SELECT ename, sal+100,*12
FROM emp;
Answer: B

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NO.18 Which three statements correctly describe the functions and use of constraints? (Choose three.)
A.Constraints provide data independence.
B.Constraints make complex queries easy.
C.Constraints enforce rules at the view level.
D.Constraints enforce rules at the table level.
E.Constraints prevent the deletion of a table if there are dependencies.
F.Constraints prevent the deletion of an index if there are dependencies.
Answer: CDE

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NO.19 What are two reasons to create synonyms? (Choose two.)
A.You have too many tables.
B.Your tables are too long.
C.Your tables have difficult names.
D.You want to work on your own tables.
E.You want to use another schema's tables.
F.You have too many columns in your tables.
Answer: CE

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NO.20 Which SQL statement generates the alias Annual Salary for the calculated column SALARY*12?
A.SELECT ename, salary*12 'Annual Salary'
FROM employees;
B.SELECT ename, salary*12 "Annual Salary"
FROM employees;
C.SELECT ename, salary*12 AS Annual Salary
FROM employees;
D.SELECT ename, salary*12 AS INITCAP("ANNUAL SALARY")
FROM employees
Answer: B

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Code d'Examen: 1Z1-403
Nom d'Examen: Oracle (Enterprise Linux System Administration)
Questions et réponses: 115 Q&As

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NO.1 To find the value of the DISPLAY environment variable, you issue the following command:
[rooot@server1]#echo $DISPLAY
0
[rooot@server1]#
What do you interpret from the environment variable's value?
A. Graphical applications would make a local UNIX socket connection.
B. Graphical applications would make a remote UNIX socket connection.
C. Graphical applications would make the first network connection to TCP port 6001.
D. Graphical applications would make the second network connection to TCP port 6000.
Answer: A

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NO.2 Being the system administrator for XYZ corporation, you have been given the task of setting up a new
Linux box.
The new machine has to meet the following criteria:
1. There should be a provision for expanding one filesystem without affecting the other filesystems.
2: The user data should be safe in the event of root file system crash.
3: The filesystems should support journaling.
Which three actions must you take to meet all the requirements? (Choose three.)
A. Use ext3 as the filesystem.
B. Use ext2 as the filesystem.
C. Have the /usr/ directory on its own filesystem.
D. Have the /home/ directory on its own filesystem.
E. Separate the directory structure across multiple partitions.
Answer: ADE

Oracle   1Z1-403   1Z1-403   1Z1-403 examen   1Z1-403

NO.3 During the installation of Oracle Enterprise Linux, you want to customize the packages to be installed.
You select one of the package groups that has both base and optional packages.
Which statement about the packages is true?
A. Only the optional packages would be installed.
B. All the base packages and the optional packages would be installed.
C. The selection of a base package does not depend on an optional package.
D. Only the base packages and the auto selected optional packages would be installed.
Answer: D

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NO.4 Match the following scripts and their applicability:
1. ./.xinitrc a) applies if X is started directly, or if ./.xsession does not exist and X is started viaa display
manager
2) ./.xsession b) applies when X is started directly
3) ./.Xclients c) applies when X is started from a display manager
A. 1-b, 2-a, 3-c
B. 1-b, 2-c, 3-a
C. 1-a, 2-b, 3-c
D. 1-a, 2-c, 2-b
Answer: B

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NO.5 The organization you work for wants to set up a new machine with Oracle Enterprise Linux and has
three requirements:
1. The filesystem should be consistent.
2: The old data should not reappear in the files after an unclean shutdown.
3: The filesystem data should be written to the disk before metadata.
In order to meet these requirements, you have set the ext3 journaling mode as data=writeback.
Which requirements have you met?
A. only 1
B. only 2
C. only 3
D. both 1and 3
E. both 2 and 3
F. both 1 and 2
G. All the three requirements are met.
Answer: A

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NO.6 You are installing Oracle Enterprise Linux on a machine and are at the stage of swap filesystem
creation. You want to ensure that swap contains twice the amount of RAM available in the system but do
not know the total available memory.
You can use the free command but do not have a prompt to execute the command. Which key
combination would take you to a command prompt?
A. [Ctrl]+[Alt]+[F2]
B. [Ctrl]+[Alt]+[F3]
C. [Ctrl]+[Alt]+[F4]
D. [Ctrl]+[Alt]+[F1]
Answer: A

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NO.7 You have trouble in booting the Linux system and want to troubleshoot it. To find the cause, you want to
make the kernel start the bash program in place of init.
What would you do to achieve this objective? (Choose all that apply.)
A. Pass S as the kernel parameter to the grub menu.
B. Pass 1 as the kernel parameter to the grub menu.
C. Pass init=/bin/bash as the kernel parameter to the grub menu.
D. Pass INIT=/sbin/bash as the kernel parameter to the grub menu.
Answer: C

Oracle   1Z1-403   1Z1-403   1Z1-403   1Z1-403

NO.8 You are logged in to server1 and want to allow remote connections to server1 through X Display
Manager Control Protocol (XDMCP). You change the entry "Enable=false" to "Enable=true" in the
"[xdmcp]" section of the gdm.conf configuration file.
To test the XDMCP configuration, you log in to station1 as smith and try to connect to server1 by using the
following command:
[smith@station1]$ X -query server1.example.com :1
What is the result?
A. A connection to the gdm display manager on server1.example.com would be established using direct
XDMCP.
B. A connection to the xdm display manager on server1.example.com would be established using direct
XDMCP.
C. A connection to the gdm display manager on server1.example.com would be established using indirect
XDMCP.
D. A connection to the xdm display manager on server1.example.com would be established using indirect
XDMCP.
Answer: A

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NO.9 You are currently working in runlevel 3. The X server is configured correctly and the default runlevel is
set to 5 in the /etc/inittab file. To find the default desktop you issue the following command:
[root@server1]#cat /etc/sysconfig/desktop
[root@server1]#
You find the file empty. What will be the effect when you try to go to the runlevel 5?
A. The system defaults to kdm and launch KDE.
B. The system defaults to xdm and launch GNOME.
C. The system defaults to gdm and launch GNOME
D. The system will fail to log into the graphical mode.
Answer: C

Oracle   certification 1Z1-403   1Z1-403

NO.10 You have a /dev/md1 redundant array of independent disks (RAID) array on your system as shown
below:
[root@server1 ~]# cat /proc/mdstat
Personalities : [raid 5]
md1 : active raid5 sdd1[3] sdc1[1] sdb1[0]
594176 blocks level 5, 64k chunk, algorithm 2 [3/2] [UU_]
unused devices:
The /dev/md1 RAID array is mounted on /data. You issued the command:
mdadm --fail /dev/md1 /dev/sdc1 /dev/sdb1
Which statements are true about the RAID array after you issue this command? (Choose all that apply.)
A. The kernel would report a Buffer I/O error on the RAID device /dev/md1.
B. The RAID array would be destroyed but the data could be recovered from the RAID disks.
C. The RAID array would be completely destroyed including the super block of the file system.
D. The RAID array could be reconstructed using new RAID partitions that synchronize with the /dev/sdd1
disk partition.
Answer: AC

Oracle   1Z1-403 examen   1Z1-403   1Z1-403

NO.11 You have server1 configured as the Virtual Network Computing (VNC) server. There is no firewall
between server1 and station1. You have logged on to station1 as root and want to connect to server1
using VNC. You issue the following command:
[root@station1]# vncviewer server1.2
Which statement is true?
A. server1 provides an encrypted connection to station1.
B. The xinetd service on station1 is not mandatory for the VNC connection.
C. The desktop of server1 is shared with station1 without prompting for a password.
D. station1 is prompted for a password and the desktop of server1 is shared with station1 only when the
correct password is entered.
Answer: D

Oracle examen   1Z1-403   1Z1-403

NO.12 You want to configure the display login program to display the face browser of user accounts for
system logon.
Which two display managers support this feature? (Choose two.)
A. gdm
B. kdm
C. twm
D. xdm
Answer: AB

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NO.13 Which three statements are true about the Linux swap file system? (Choose three.)
A. The Linux user data cannot be written to the Linux swap space.
B. High-priority swap spaces would be exhausted only after exhausting swap spaces with equal priorities.
C. The Linux kernel code and data are not swappable and are never moved to swap file system from
physical memory.
D. If too much space is allocated for swap, errant programs may run for an extended time and use up
RAM and swap space.
E. When most of the system's real memory is in use, and there is a need for more, some data would be
moved into the swap file system to free real RAM memory for use by applications or for kernel use, such
as for driver buffers, files, or network packets.
Answer: CDE

Oracle   1Z1-403   certification 1Z1-403

NO.14 You want to install the ieee80211 module on your Linux system. While building the module, you receive
the following error:
Make [2]: *** [ieee 80211-1.2.17/ieee80211_module.o] Error 1
Make [1]: *** [_module_/ieee80211-1.2.17] Error 2
Make [1]: Leaving directory '/usr/src/kernels/2.6.9-42.0.0.0.1.EL-i686'
Make: *** [modules] Error 2
What do you infer from this error?
A. The ieee80211 module conflicts with the current kernel version.
B. The dependency modules for ieee80211 are not installed on the system.
C. The ieee80211 module given is not supported by the machine architecture.
D. The kernel source package, which must be installed to compile external device drivers, is not installed
on the system.
Answer: D

Oracle   1Z1-403   1Z1-403   1Z1-403

NO.15 Which two statements correctly define Virtual Network Computing (VNC)? (Choose two.)
A. It is a client/server application.
B. It does not provide any protection to remote X connections.
C. It allows entire desktops to be displayed and controlled remotely.
D. It is used to connect to a remote Linux machine only from a Linux machine.
Answer: AC

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NO.16 Identify two true statements about Virtual Network Computing (VNC). (Choose two.)
A. It is a client/server application.
B. It allows entire desktops to be displayed remotely.
C. It does not provide any protection to remote X connections.
D. It allows applications to be run remotely and displayed only locally.
E. It is used to connect to a remote Linux machine only from a Linux machine.
Answer: AB

Oracle   1Z1-403   1Z1-403   1Z1-403   1Z1-403   1Z1-403 examen

NO.17 You have bound your system to the Network Information Service (NIS) domain ORACLE and all
client-side configurations are done. The users report a problem that they are not able to log in through
NIS accounts, whereas local users are successfully authenticated, after the system reboots.
As a Linux administrator, you executed the nisdomainname command and you get the output "(none)",
and no traces of yp are found in the /var/log/messages file.
What would you do to resolve this error? (Choose all that apply.)
A. Re-create the NIS domain on the server that runs the NIS domain ORACLE.
B. Restart the ypserv service on the server that runs the NIS domain ORACLE.
C. Restart the network service on the server that runs the NIS domain ORACLE.
D. Use the chkconfig command to set the ypbind service to be on at the desired runlevels.
E. Use the ntsysv command to select the ypbind service to be automatically started with the desired
runlevels.
Answer: DE

certification Oracle   1Z1-403   1Z1-403   1Z1-403

NO.18 You work for XYZ organization and are setting up a new Linux box. The organization wants the user's
data on the system to be safe even in the event of a crash of the root filesystem.
Which step do you think would help the administrator achieve the organization's objective?
A. Have /opt directory on its own filesystem with the filesystem being ext3.
B. Have /home directory on its own filesystem with the filesystem being ext3.
C. Have /var directory on its own filesystem and all other filesystems under / (root filesystem).
D. Have /usr directory on its own filesystem and all other filesystems under / (root filesystem).
Answer: B

Oracle   1Z1-403   1Z1-403 examen   1Z1-403

NO.19 You are installing Oracle Enterprise Linux in the Graphical User Interface(GUI) mode on your machine
and are at the package group selection panel. You do not want to customize the packages to be installed.
Therefore, select the option "install default software packages."
Which three packages would be in the default selection group? (Choose three.)
A. GNOME
B. Webserver
C. System Tools
D. Printer Support
E. Windows File Server (SMB)
Answer: ABE

Oracle   1Z1-403   1Z1-403   1Z1-403 examen

NO.20 You are installing Oracle Enterprise Linux in the Graphical User Interface (GUI) mode on your
machine. From the package selection screen, you select one of the package groups.
Which two statements are NOT true in this context? (Choose two.)
A. Only the optional packages would be installed.
B. All the optional packages are also installed along with the package group.
C. Both the base packages and all the optional packages would be installed.
D. The selection of a base package does not depend on an optional package.
E. Only the base packages and the auto-selected optional packages would be installed.
Answer: AB

Oracle   1Z1-403   1Z1-403   certification 1Z1-403

NO.21 While importing user accounts in bulk along with passwords using the newusers command, you noticed
that user passwords are saved in the /etc/shadow file in the crypt format.
How would you enable the newusers command to use the preferred MD5 format when writing passwords
to the /etc/shadow file?
A. Add the MD5_ENAB=yes line to the /etc/login.defs file.
B. Add the MD5_CRYPT yes line to the /etc/login.defs file.
C. Add the MD5_CRYPT_ENAB yes line to the /etc/login.defs file.
D. Add the MD5_CRYPT_ENAB yes line to the /etc/security/limits.conf file.
Answer: C

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NO.22 Which two statements are true about an X server? (Choose two.)
A. Multiple X servers can be run on the same host.
B. The first X server on a remote host listens on port 6000.
C. The first X server on a remote host listens on port 6001.
D. Only a single X server can run on a machine at any given point of time.
Answer: AB

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NO.23 The user smith executed the mozilla command, located in /usr/bin and owned by the root user.
Which two statements are true? (Choose two.)
A. When mozilla needs to access certain files, the access would be determined by root's permissions.
B. When started by smith, smith would own the initial mozilla program and all processes started by the
initial process.
C. When mozilla needs to access certain files, the access would be determined by smith's permissions
and not by root's.
D. When started by the user smith, the user smith would own the initial mozilla program and all processes
started by the initial process would be owned by the system user associated with mozilla.
Answer: BC

Oracle examen   1Z1-403   certification 1Z1-403   1Z1-403

NO.24 As an administrator, you execute the following command to verify the integrity of mysql:
[root@server1]#rpm -Va mysql
S.5....T c /etc/my.cnf
What attributes of the /etc/my.cnf file have changed?
A. The permissions, user ownership, and file type have changed.
B. The permissions, group ownership, and file type have changed.
C. The user ownership, group ownership, and file type have changed.
D. The MD5 signature, file size, and modification time have changed.
Answer: D

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NO.25 The system you logged in is running in runlevel 5. You want to customize X and want to have a
consistent environment regardless of how X is started.
Which step is recommended?
A. Delete the ~/.Xclients file and use the ~/.xinitrc file.
B. Delete ~/.Xclients and ~/.xsession and use the ~/.xinitrc file.
C. Delete ~/.xinitrc and ~/.xsession and use the ~/.Xclients file.
D. Delete ~/.xinitrc and ~/.Xclients and use the ~/.xsession file.
E. Delete the ~/.Xclients file and use both ~/.xinitrc and ~/.xsession files.
Answer: C

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NO.26 You are in runlevel 5 working at the tty1 terminal on server1. To configure the gdm display manager,
you issue the following command but this results in an error as shown below:
[root@server1]#gdmsetup
(gdmsetup:6326): Gtk-WARNING **: cannot open display:
What could be the reason for the error?
A. The /etc/inittab file is corrupted.
B. The Xserver on the system is not running.
C. The xfs service is not running on the system.
D. The runlevel in the /etc/inittab file is missing.
E. The command only works in a graphical environment.
Answer: E

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NO.27 You have written a udev rule as shown below:
KERNEL=="fb[0-9]*", NAME="fb/%n", SYMLINK+="%k", GROUP="video"
KERNEL=="fd[0-9]*", OWNER="john"
Which two statements are true? (Choose two.)
A. The user john would own all the floppy devices.
B. The user john would own all the floppy and frame buffer devices.
C. The video group on the system would own all the floppy devices.
D. The video group on the system could be controlled by john only.
E. The video group on the system would own all the frame buffer devices.
Answer: AE

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NO.28 You are downloading a text file from the Web into a directory on an ext2 filesystem. The system crash
after the data blocks are written onto the disk but before the metadata is written.
What is the status of the file after this transaction?
A. The file contents can be seen only using the cat command.
B. The file can be accessed using only the vi editor and does not require to be repaired using fsck.
C. The file cannot be accessed and must be repaired using fsck inorder to access the file contents.
D. The file contents can be accessed using only the emacs text editor and does not require to be repaired
using fsck .
Answer: C

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NO.29 You have the default syslogd configuration in your system. You plugged in a USB keydrive into the
system.
Which command would help you to find the bus and the device number of the keydrive?
A. lsusb
B. lsmod
C. insmod
D. cat /proc/self/mounts
Answer: A

Oracle examen   1Z1-403   1Z1-403   1Z1-403

NO.30 You want to make Oracle Enterprise Linux coexist with Microsoft Windows on your machine. You
install Oracle Enterprise Linux first with the default boot loader configuration and then install Microsoft
WindowsXP. You reboot the system after installation and the system boots directly into the Windows
operating system without showing the Grand Unified Boot Loader (GRUB) menu.
Which two steps could you have taken to avoid this situation? (Choose two.)
A. Install Oracle Enterprise Linux first with the boot loader on MBR and then install Microsoft WindowsXP.
B. Install Microsoft WindowsXP first and then install Oracle Enterprise Linux with the boot loader on
Master Boot Record (MBR).
C. Install Microsoft WindowsXP first and then install Oracle Enterprise Linux with the boot loader at the
first sector of the /boot partition.
D. Install Oracle Enterprise Linux first with the boot loader at the first sector of the /boot partition and then
install Microsoft WindowsXP.
Answer: BC

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