RedHat Red Hat Certified System Administrator EX200 Exam Questions

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Total 136 questions

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Question 1

Open kmcrl value of 5 , and can verify in /proc/ cmdline

AExplanation:
# vim /boot/grub/grub.conf
kernel/vmlinuz-2.6.32-71.el6.x86_64 ro root=/dev/mapper/GLSvg-GLSrootrd_LVM_LV=GLSvg/GLSroot
rd_LVM_LV=GLSvg/GLSswaprd_NO_LUKSrd_NO_MDrd_NO_DM
LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us crashkernel=auto rhgb quiet kmcrl=5
Restart to take effect and verification:
# cat /proc/cmdline
ro root=/dev/mapper/GLSvg-GLSroot rd_LVM_LV=GLSvg/GLSroot rd_LVM_LV=GLSvg/GLSswap rd_NO_LUKS rd_NO_MD rd_NO_DM
LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rhgb quiet kmcrl=5

Answer : A

Question 2

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.

AExplanation:
Use netconfig command
Enter the IP Address as given station number by your examiner: example: 172.24.0.1
Enter Subnet Mask
Enter Default Gateway and primary name server
press on ok
ifdown eth0
ifup eth0
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.

Answer : A

Question 3

A YUM source has been provided in the

http://instructor.example.com/pub/rhel6/dvd

Configure your system and can be used normally.

Asee explanation below

Answer : A

/etc/yum.repos.d/base.repo

[base]

name=base

baseurl=http://instructor.example.com/pub/rhel6/dvd

gpgcheck=0

yum list

Question 4

Find the rows that contain abcde from file /etc/testfile, and write it to the file/tmp/testfile, and the sequence is requested as the same as /etc/testfile.

AExplanation:
# cat /etc/testfile | while read line;
do
echo $line | grep abcde | tee -a /tmp/testfile
done
OR
grep `abcde' /etc/testfile > /tmp/testfile

Answer : A

Question 5

Create a backup

Create a backup file named /root/backup.tar.bz2, contains the content of /usr/local, tar must use bzip2 to compress.

AExplanation:
cd /usr/local
tar --jcvf /root/backup.tar.bz2
mkdir /test
tar --jxvf /root/backup.tar.bz2 --C /test// Decompression to check the content is the same as the /usr/loca after
If the questions require to use gzip to compress. change --j to --z.

Answer : A

Question 6

Add a swap partition.

Adding an extra 500M swap partition to your system, this swap partition should mount automatically when the system starts up. Don't remove and modify the existing swap partitions on your system.

AExplanation:
fdisk -cu /dev/vda// in the way of expanding the partition, don't make main partition
partx --a /dev/vda
mkswap /dev/vdax
swapon /dev/vdax
swapon --s
vi /etc/fstab
/dev/vdaxswapswapdefaults0 0
mount -a

Answer : A

Question 7

Configure a task: plan to run echo "file" command at 14:23 every day.

AExplanation:
(a) Created as administrator
# crontab -u natasha -e
23 14 * * * /bin/echo 'file'
(b)Created as natasha
# su - natasha
$ crontab -e
23 14 * * * /bin/echo 'file'

Answer : A