Red Hat RH302 ExamRed Hat Certified Engineer on Redhat Enterprise Linux 5 (Labs)

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[Practical] RH302 Red Hat actual exam 41-50 (May 2017)

we provide Tested Red Hat RH302 practice test which are the best for clearing RH302 test, and to get certified by Red Hat Red Hat Certified Engineer on Redhat Enterprise Linux 5 (Labs). The RH302 Questions & Answers covers all the knowledge points of the real RH302 exam. Crack your Red Hat RH302 Exam with latest dumps, guaranteed!

Q41. CORRECT TEXT

Make Secondary belongs the jackie and curtin users on sysuser group. But david user should not

belongs to sysuser group.

Answer and Explanation:

1. usermod -G sysuser jackie

2. usermod -G sysuser curtin

3. Verify by reading /etc/group file

Using usermod command we can make user belongs to different group. There are two types of group one primary and another is secondary. Primary group can be only one but user can belongs to more than one group as secondary.

usermod -g groupname username à To change the primary group of the user

usermod -G groupname username à To make user belongs to secondary group.


Q42. CORRECT TEXT

Configure the Apache webserver for station?.example.com (associated IP is your host IP address) by downloading the index.html from ftp://server1.example.com.

Answer and Explanation:

1. vi /etc/httpd/conf/httpd.conf

<VirtualHost 192.168.0.?>

ServerName station?.example.com

DocumentRoot /var/www/station?

DirectoryIndex index.html

ServerAdmin webmaster@example.com

</VirtualHost>

2. Create the directory and index page on specified path. (Index page can download from

ftp://server1.example.com at exam time)

Check the SELinux context of index page , should like this:

-rw-r--r-- root root system_u:object_r:httpd_sys_content_t /var/www/html/index.html

If SELinux Context is mismatched, use the restorecon -R /var command

3. service httpd start|restart

4. chkconfig httpd on


Q43. 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.


Q44. CORRECT TEXT

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

Answer and Explanation:

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:

ii. Create the partitions using diskdruid.

iii. Create the Partitions having File system Type Software RAID.

iv. Click on RAID button

v. Type the Mount Point

vi. Select File system type

vii. Select RAID Level

viii. Select Partitions/disks as a member of RAID.

viii. Click on ok

After Installation: We can create the RAID Device after Installation on command-line.

11. Create the Two partitions having equal size. (Specify the Size using Cylinder, find the

remaining cylinder and divide by 2).

12. Change the Partition ID to fd (Linux raid Autodetect) by typing t.

13. Type w à To write on partitions table.

14. Use partprobe command to synchronic the partition table.

15. Use: mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/hda? /dev/hda?

16. Verify the RAID: mdadm --detail /dev/md0

17. mkfs -t ext3 /dev/md0

18. mount /dev/md0 /data

19. vi /etc/fstab

/dev/md0 /data ext3 defaults 0 0

20. Verify mounting devices using mount command.


Q45. CORRECT TEXT

Create one partitions having size 100MB and mount it on /data.

Answer and Explanation:

Use fdisk /dev/hda àTo create new partition.Type n àFor 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 àYou 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?

Or

mke2fs -j /dev/hda? àTo create ext3 filesystem.vi /etc/fstab

Write:

/dev/hda? /data ext3 defaults 0 0

11. Verify by mounting on current Sessions also:

mount /dev/hda? /data


Q46. CORRECT TEXT

There are three Disk Partitions /dev/hda8, /dev/hda9, /dev/hda10 having size 100MB of each partition. Create a Logical Volume named testvolume1 and testvolume2 having a size 250MB.

Mount each Logical Volume on lvmtest1, lvmtest2 directory.

Answer and Explanation:

Steps of Creating LVM:

1. pvcreate /dev/hda8 /dev/hda9 /dev/hda10

àpvdisplay command is used to display the information of physical volume.

2. vgceate test0 /dev/hda8 /dev/hda9 /dev/hda10

àvgdisplay command is used to display the information of Volume Group.

3. lvcreate -L 250M -n testvolume1 test0

à lvdisplay command is used to display the information of Logical Volume.

4. lvcreate -L 250M -n testvolume2 test0

5. mkfs -t ext3 /dev/test0/testvolume1

6. mkfs -t ext3 /dev/test0/testvolume2

7. mkdir /lvtest1

8. mkdir /lvtest2

9. mount /dev/test0/testvolume1 /lvtest1

10. mount /dev/test0/testvolume2 /lvtest2

11. 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.


Q47. CORRECT TEXT

One New Kernel is released named kernel-.2.6.9-11. Kernel is available on ftp://server1.example.com/pub/updates directory for anonymous. Install the Kernel and make the kernel-2.6.9-5 default.

Answer and Explanation:

1. rpm -ivh ftp://server1.example.com/pub/updates/kernel-2.6.9-11.i686.rpm

2. vi /etc/grub.conf

default=1 à Change this value to 1

timeout=5

splashimage=(hd0,0)/grub/splash.xpm.gz

hiddenmenu

title Red Hat Enterprise Linux ES (2.6.9-11)

root (hd0,0)

kernel /vmlinuz-2.6.9-11.EL ro root=LABEL=/ rhgb quiet

initrd /initrd-2.6.9-11.EL.img

title Red Hat Enterprise Linux ES (2.6.9-5.EL)

root (hd0,0)

kernel /vmlinuz-2.6.9-5.EL ro root=LABEL=/ rhgb quiet

initrd /initrd-2.6.9-5.EL.img

According question that kernel is available to anonymous user. You can directly install from the ftp server using rpm command.

When you install the kernel, it will write on /etc/grub.conf file. You can set the default kernel by changing the default value. See on the output of /etc/grub.conf file that new kernel is on first title so it's index is 0 and previous kernel's index is 1.


Q48. CORRECT TEXT

Boot your System Successfully on runlevel 3.

Answer and Explanation:

This is boot related problem. There will be same questions repeated two times but problem is different.

First When you restart the system you will get the Error:

File Not Found

mount: error 15 mounting ext3

mount: error 2 mounting none

switchroot: mount failed: 22

umount /initrd/dev/: 2

Kernel Panic: no syncing: Attempted to kill init !

This error occurred in your system before showing welcome redhat linux. That means problem in grub boot loader.

Restart the System

Check the grub boot loader configuration by pressing e shortcut key.

You will see like:

root (hd0,0)

kernel /vmlinuz-2.6.9-5.EL ro root= / rhgb quiet

initrd /initrd-2.6.9-5.EL.img

OR

root (hd0,0)

kernel /vmlinuz-2.6.9-5.EL ro root=LABEL=/root rhgb quiet

initrd /initrd-2.6.9-5.EL.img

Then Edit Boot loader to make like

root (hd0,0)

kernel /vmlinuz-2.6.9-5.EL ro root=LABEL=/ rhgb quiet

initrd /initrd-2.6.9-5.EL.img

Check all lines and edit as same as above. Press b to boot the system

After booting the system you should correct the /etc/grub.conf file.

If still you are getting Error like File not found, it seems that either kernel file or initrd file is missing.

To troubleshoot with these problem, boot the system on rescue mode.

v. linux rescue

vi. chroot /mnt/sysimage

vii. Check the files on /boot, if not available install the kernel package from ftp or nfs server

viii. Create the initrd image file on boot using: mkinitrd initrd-2.6.9-5.EL.img `uname -r`


Q49. CORRECT TEXT

Fill up the Form through http://server1.example.com/form.php

Answer and Explanation:

1. Open the Browser and type the above URL.

2. Fill the form as required all information.


Q50. CORRECT TEXT

You are administrator of Certkiller network. First time you are going to take the full backup of all user's home directory. Take the full backup of /home on /tmp/back file.

Answer and Explanation:

1. dump -0u -f /tmp/back /dev/hda4

dump is the standard backup utility. According to the questions, fullback should take. -0 means fullback, -u means update the /etc/dumpdates which maintains the backup record and -f means filename. If you are directly taking backup into other device, you can specify the device name.

i.e dump -0u -f /dev/st0 /dev/hda4. Where hda4 is a separate partition mounted on /home.


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