Latest RedHat RH202 Actual Free Exam Questions & Community Discussion, Page 3

Question #27

Create a RAID Device /dev/md0 by creating equal two disks from available free space on your harddisk and mount it on /data.

A. Redhat Enterprise Linux 5 Supports the RAID LEVEL 0, RAID LEVEL 1, RAID LEVEL 5 and RAID LEVEL 6 at installation time. You can create it at installation time later no need to type lots of commands for RAID . At Installation Time:
Create the partitions using diskdruid.
Create the Partitions having File system Type Software RAID .
Click on RAID button
Type the Mount Point
Select File system type
Select RAID Level
Select Partitions/disks as a member of RAID .
8. Click on ok After Installation: We can create the RAID Device after Installation on command-line.
Create the Two partitions having equal size. (Specify the Size using Cylinder, find the remaining cylinder and divide by 2).
Change the Partition ID to fd (Linux raid Autodetect) by typing t.
Type w To write on partitions table.
Use partprobe command to synchronic the partition table.
Use: mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/hda?
/dev/hda?
Verify the RAID: mdadm --detail /dev/md0
mkfs -t ext3 /dev/md0
mount /dev/md0 /data
vi /etc/fstab
/dev/md0 /data ext3 defaults 0 0
Verify mounting devices using mount command.

B. Redhat Enterprise Linux 5 Supports the RAID LEVEL 0, RAID LEVEL 1, RAID LEVEL 5 and RAID LEVEL 6 at installation time. You can create it at installation time later no need to type lots of commands for RAID . At Installation Time:
Create the partitions using diskdruid.
Create the Partitions having File system Type Software RAID .
Click on RAID button
Type the Mount Point
Select Partitions/disks as a member of RAID .
8. Click on ok After Installation: We can create the RAID Device after Installation on command-line.
Create the Two partitions having equal size. (Specify the Size using Cylinder, find the remaining cylinder and divide by 2).
Change the Partition ID to fd (Linux raid Autodetect) by typing t.
Type w To write on partitions table.
Verify the RAID: mdadm --detail /dev/md0
mkfs -t ext3 /dev/md0
mount /dev/md0 /data
vi /etc/fstab
/dev/md0 /data ext3 defaults 0 0
Verify mounting devices using mount command.

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Question #28

Create the group named sysuser.

A. 1. groupadd sysuser groupadd command is used to create the group and all group information is stored on /etc/group file.

B. 1. groupadd sysuser groupadd command is used to create the group and all group information is stored in /etc/group file.

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Question #29

Create the directory /storage and group owner should be the sysusers group.

A. chgrp sysusers /storage
Verify using ls -ld /storage command. You should get like drwxr-x--- 4 root sysusers 4090 Mar 18 17:59 /storage chgrp command is used to change the group ownership of particular files or directory. Another way you can use the chown command. chown root:sysusers /storage

B. chgrp sysusers /storage
Verify using ls -ld /storage command. You should get like drwxr-x--- 2 root sysusers 4096 Mar 16 17:59 /storage chgrp command is used to change the group ownership of particular files or directory. Another way you can use the chown command. chown root:sysusers /storage

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Question #30

There are three Disk Partitions /dev/hda8, /dev/hda9, /dev/hda10 having size 100MBof each partition. Create a Logical Volume named testvolume1 and testvolume2 having a size 250MB. Mount each Logical Volume on lvmtest1, lvmtest2 directory.

A. Steps of Creating LVM:
1. pvcreate /dev/hda8 /dev/hda9 /dev/hda10
pvdisplay command is used to display the information of physical volume.
vgceate test0 /dev/hda8 /dev/hda9 /dev/hda10vgdisplay command is used to display the information of Volume Group.
lvcreate -L 250M -n testvolume1 test0 lvdisplay command is used to display the information of Logical Volume.
lvcreate -L 250M -n testvolume2 test0
mkfs -t ext3 /dev/test0/testvolume1
mkfs -t ext3 /dev/test0/testvolume2
mkdir /lvtest1
mkdir /lvtest2
mount /dev/test0/testvolume1 /lvtest1
mount /dev/test0/testvolume2 /lvtest2
vi /etc/fstab /dev/test0/testvolume2 /lvtest2 ext3 defaults 0 0 /dev/test0/testvolume1 /lvtest1 ext3 defaults 0 0 To create the LVM( Logical Volume Manager) we required the disks having '8e' Linux LVM type. First we should create the physical Volume, then we can create the Volume group from disks belongs to physical Volume. lvcreate command is used to create the logical volume on volume group. We can specify the size of logical volume with -L option and name with -n option.
Physical Disk1 Logical Volume 1
Physical Disk2
Physical Disk3 Physical Volume Volume Group Logical Volume 2
Logical Volume 3

B. Steps of Creating LVM:
1. pvcreate /dev/hda8 /dev/hda9 /dev/hda10
pvdisplay command is used to display the information of physical volume.
vgceate test0 /dev/hda8 /dev/hda9 /dev/hda10vgdisplay command is used to display the information of Volume Group.
lvcreate -L 250M -n testvolume1 test0 lvdisplay command is used to display the information of Logical Volume.
lvcreate -L 250M -n testvolume2 test0
mkfs -t ext3 /dev/test0/testvolume1
mkfs -t ext3 /dev/test0/testvolume2
mkdir /lvtest1
mkdir /lvtest2
vi /etc/fstab /dev/test0/testvolume2 /lvtest2 ext3 defaults 0 0 /dev/test0/testvolume1 /lvtest1 ext3 defaults 0 0 To create the LVM( Logical Volume Manager) we required the disks having '8e' Linux LVM type. First we should create the physical Volume, then we can create the Volume group from disks belongs to physical Volume.
Physical Disk1 Logical Volume 1
Physical Disk2
Physical Disk3 Physical Volume Volume Group Logical Volume 2
Logical Volume 3

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Question #31

We are working on /data initially the size is 2GB. The /dev/test0/lvtestvolume is mount on /data. Now you required more space on /data but you already added all disks belong to physical volume. You saw that you have unallocated space around 5 GB on your harddisk. Increase the size of lvtestvolume by 5GB.

A. Create a partition having size 5 GB and change the syste id '9e'.
use partprobe command
pvcreate /dev/hda9 Suppose your partition number is hda9.
vgextend test0 /dev/hda9 vgextend command add the physical disk on volume group.
lvextend -L+5110M /dev/test0/lvtestvolume
verify using lvdisplay /dev/test0/lvtestvolume.

B. Create a partition having size 5 GB and change the syste id '8e'.
use partprobe command
pvcreate /dev/hda9 Suppose your partition number is hda9.
vgextend test0 /dev/hda9 vgextend command add the physical disk on volume group.
lvextend -L+5120M /dev/test0/lvtestvolume
verify using lvdisplay /dev/test0/lvtestvolume.

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Question #32

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.

A. When root unable to login into the system think:
Is password correct?
Is account expired?
Is terminal Blocked? Do these Steps:
Boot the System on Single user mode.
Change the password
Check the account expire date by using chage -l root command. If account is expired, set net expire date: chage -E "NEVER" root
Check the file /etc/securetty Which file blocked to root login from certain terminal.
If terminal is deleted or commented write new or uncomment.
Reboot the system and login as a root.

B. When root unable to login into the system think:
Is password correct?
Is account expired?
Is terminal Blocked? Do these Steps:
Boot the System on Single user mode.
Change the password
Check the file /etc/securetty Which file blocked to root login from certain terminal.
If terminal is deleted or commented write new or uncomment.
Reboot the system and login as a root.

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Question #33

Install the Redhat Linux RHEL 4 through NFS. Where your Server is server1.example.com having IP 172.24.254.254 and shared /var/ftp/pub. The size of the partitions are listed below: / -> 1048 /home -> 1028 /boot -> 512 /var -> 1028 /usr -> 2048 Swap -> 1.5 of RAM Size /archive -> configure the RAID Level 0 of remaining all free space. After completing the installation through NFS solve the following QUESTIONs. There are two networks 172.24.0.0/16 and 172.25.0.0/16. As well as there are two domains example.com on 172.24.0.0/16 network and my133t.org on 172.25.0.0/16 network. Your system is based on example.com domain.

A. Insert the CD on CD-ROM and start the system.
In Boot: Prompt type linux askmethod
It will display the language, keyboard selection.
It will ask you for the installation method.
Select the NFS Image from the list
It will ask the IP Address, Net mask, Gateway and Name Server. Select Use Dynamic IP Configuration: because DHCP Server will be configured in your exam lab.
It will ask for the NFS Server Name and Redhat Enterprise Linux Directory. Specify the NFS Server: 172.24.254.254 Directory: /var/ftp/pub
After Connecting to the NFS Server Installation start in GUI. Go up to the partition screen by selecting the different Options.
Create the partition According to the QUESTION because Size and what-what partition should you create at installation time is specified in your QUESTION
Create the two RAID partitions having equal size of remaining all free space.
Click on RAID button
Type mount point /archive
Select RAID Level 0
Click on ok
Then select the MBR Options, time zone and go upto package selections.
It is another Most Important Time of installation. Due to the time limit, you should care about the installation packages. At Exam time you these packages are enough. X-Window System GNOME Desktop (these two packages are generally not required) Administration Tools. System Tools Windows File Server FTP Servers Mail Servers Web Servers Network Servers Editors Text Based Internet Server Configuration Tools Printing Supports When installation will complete, your system will reboot. Jump for another QUESTION.

B. Insert the CD on CD-ROM and start the system.
In Boot: Prompt type linux askmethod
It will display the language, keyboard selection.
It will ask you for the installation method.
Select the NFS Image from the list
Click on RAID button
Type mount point /archive
Select RAID Level 0
Click on ok
Then select the MBR Options, time zone and go upto package selections.
It is another Most Important Time of installation. Due to the time limit, you should care about the installation packages. At Exam time you these packages are enough. X-Window System GNOME Desktop (these two packages are generally not required) Administration Tools. System Tools Windows File Server FTP Servers Mail Servers Web Servers Network Servers Editors Text Based Internet Server Configuration Tools Printing Supports When installation will complete, your system will reboot. Jump for another QUESTION.

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Question #34

Raw (Model) printer named printer1 is installed and shared on 192.168.0.254. You should install the shared printer on your PC to connect shared printer using IPP Protocols.

A. IPP( Internet Printing Protocol), allows administrator to manage printer through browser so CUPS is called Internet Printing Protocol based on HTTP. We can Install the printer either through: system-confing-printer tool or through Browser.
Open the browser and Type on address: http://localhost:631 CUPS (Common Unix Printing System) used the IPP protocol. CUPS use the 631 port.
Click on Manage Printer.
Click on Add Printer.
Type Printer name, Location, Description.
Select Device for bb. (Select IPP).
Device URL: ipp://192.168.0.254/ipp/ queue name Same printer name of shared printer.
Select Model/Driver RAW printer.
service cups restart

B. IPP( Internet Printing Protocol), allows administrator to manage printer through browser so CUPS is called Internet Printing Protocol based on HTTP. We can Install the printer either through: system-confing-printer tool or through Browser.
Open the browser and Type on address: http://localhost:630 CUPS (Common Unix Printing System) used the IPP protocol. CUPS use the 630 port.
Click on Manage Printer.
Click on Add Printer.
Type Printer name, Location, Description.
Select Device for bb. (Select IPP).
Device URL: ipp://192.168.0.244/ipp/ queue name Same printer name of shared printer.
Select Model/Driver RAW printer.
service cups restart

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Question #35

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 4 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?

A. 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 .
To get the hosts on 192.168.1.0/24 should go through 192.168.0.254.

B. 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 Explanation, Gateway defines the way to exit the packets. According to QUESTION System working as a router for two networks have IP Address 192.168.0.254 and
192.168.1.254. To get the hosts on 192.168.1.0/24 should go through 192.168.0.254.

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Question #36

Set the Hostname station?.example.com where ? is your Host IP Address.

A. hostname station?.example.com This will set the host name only for current session. To set hostname permanently.
vi /etc/sysconfig/network HOSTNAME=station?.example.com
service network restart

B. hostname station?.example.com This will set the host name only for current session. To set hostname permanently.

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Question #37

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.

A. Think while Problems occurred on booting System on Runlevel 5 (X Window).
/tmp is full or not
Quota is already reached
Video card or resolution or monitor is misconfigured.
xfs service is running or not. Do These:
df -h /tmp /tmp-> is full remove the unnecessary file
quota username-> if quota is already 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:
Reboot the System you will get the GUI login Screen.

B. Think while Problems occurred on booting System on Runlevel 5 (X Window).
/tmp is full or not
Quota is already reached
Video card or resolution or monitor is misconfigured.
xfs service is running or not. Do These:
df -h /tmp /tmp-> is full remove the unnecessary file
quota username-> if quota is already reached remove unnecessary file from home directory.
Set the Default Runlevel 5 in /etc/inittab id:5:initdefault:
Reboot the System you will get the GUI login Screen.

C. Think while Problems occurred on booting System on Runlevel 5 (X Window).
/tmp is full or not
Quota is already reached
Video card or resolution or monitor is misconfigured.
xfs service is running or not.
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:
Reboot the System you will get the GUI login Screen.

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Question #38

Who ever creates the files/directories on /archive group owner should be automatically should be the same group owner of /archive.

A. chmod g+s /archive
Verify using: ls -ld /archive Permission should be like: drwxrws--- 6 root sysuser 4596 Mar 16 18:08 /archive If SGID bit is set on directory then who every users creates the files on directory group owner automatically the owner of parent directory. To set the SGID bit: chmod g+s directory To Remove the SGID bit: chmod g-s directory

B. chmod g+s /archive
Verify using: ls -ld /archive Permission should be like: drwxrws--- 2 root sysuser 4096 Mar 16 18:08 /archive If SGID bit is set on directory then who every users creates the files on directory group owner automatically the owner of parent directory. To set the SGID bit: chmod g+s directory To Remove the SGID bit: chmod g-s directory

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Question #39

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.

A. 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 equalsized
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.
Verify the size of Logical Volume: lvdisplay /dev/vg0/lv1
Verify the Size on mounted directory: df -h or df -h mounted directory name
Use : lvextend -L+400M /dev/vg0/lv1
resize2fs /dev/vg0/lv1 to bring extended size online.
Again Verify using lvdisplay and df -h command.

B. 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 equalsized
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.
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.
Verify the size of Logical Volume: lvdisplay /dev/vg0/lv1
Verify the Size on mounted directory: df -h or df -h mounted directory name
Use : lvextend -L+400M /dev/vg0/lv1
resize2fs /dev/vg0/lv1 to bring extended size online.
Again Verify using lvdisplay and df -h command.

C. 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 equalsized
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
Verify the size of Logical Volume: lvdisplay /dev/vg0/lv1
Verify the Size on mounted directory: df -h or df -h mounted directory name
Use : lvextend -L+400M /dev/vg0/lv1
resize2fs /dev/vg0/lv1 to bring extended size online.
Again Verify using lvdisplay and df -h command.

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