RedHat Red Hat Certified System Administrator EX200 Exam Questions

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Question 1

One Logical Volume named /dev/test0/testvolume1 is created. The initial Size of that disk is 100MB now you required more 200MB. Increase the size of Logical Volume, size should be increase on online.

AExplanation:
lvextend -L+200M /dev/test0/testvolume1 Use lvdisplay /dev/test0/testvolume1)
ext2online -d /dev/test0/testvolume1
lvextend command is used the increase the size of Logical Volume. Other command lvresize command also here to resize. And to bring increased size on online we use the ext2online command.

Answer : A

Question 2

Create a Shared Directory.

Create a shared directory /home/admins, make it has the following characteristics:

/home/admins belongs to group adminuser

This directory can be read and written by members of group adminuser Any files created in /home/ admin, group automatically set as adminuser.

AExplanation:
mkdir /home/admins
chgrp -R adminuser /home/admins
chmodg+w /home/admins
chmodg+s /home/admins

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

Upgrade the kernel, start the new kernel by default. kernel download from this address:

ftp://server1.domain10.example.com/pub/update/new.kernel

AExplanation:
Download the new kernel file and then install it.
[root@desktop8 Desktop]# ls
kernel-2.6.32-71.7.1.el6.x86_64.rpm
kernel-firmware-2.6.32-71.7.1.el6.noarch.rpm
[root@desktop8 Desktop]# rpm -ivh kernel-*
Preparing... ###########################################
[100%]
1:kernel-firmware
########################################### [ 50%]
2:kernel
########################################### [100%]
Verify the grub.conf file, whether use the new kernel as the default boot. [root@desktop8 Desktop]# cat /boot/grub/grub.conf default=0
title Red Hat Enterprise Linux Server (2.6.32-71.7.1.el6.x86_64)
root (hd0,0)
kernel /vmlinuz-2.6.32-71.7.1.el6.x86_64 ro root=/dev/mapper/vol0-root rd_LVM_LV=vol0/root rd_NO_LUKS rd_NO_MD
rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us crashkernel=auto rhgb quiet
initrd /initramfs-2.6.32-71.7.1.el6.x86_64.img

Answer : A

Question 5

Create the user named eric and deny to interactive login.

AExplanation:
useradd eric
passwd eric
vi /etc/passwd
eric:x:505:505::/home/eric:/sbin/nologin
Which shell or program should start at login time is specified in /etc/passwd file? By default, Redhat Enterprise Linux assigns the /bin/bash shell to the users. To deny the interactive login, you should write /sbin/nologin or /bin/ false instead of login shell.

Answer : A

Question 6

Configure your Host Name, IP Address, Gateway and DNS.

Host name: station.domain40.example.com

/etc/sysconfig/network

hostname=abc.com

hostname abc.com

IP Address:172.24.40.40/24

Gateway172.24.40.1

DNS:172.24.40.1

AExplanation:
# cd /etc/syscofig/network-scripts/
# ls
# vim ifcfg-eth0 (Configure IP Address, Gateway and DNS) IPADDR=172.24.40.40
GATEWAY=172.24.40.1
DNS1=172.24.40.1
# vim /etc/sysconfig/network
(Configure Host Name)
HOSTNAME= station.domain40.example.com
OR
Graphical Interfaces:
System->Preference->Network Connections (Configure IP Address, Gateway and DNS) Vim /etc/sysconfig/network
(Configure Host Name)

Answer : A

Question 7

We are working on /data initially the size is 2GB. The /dev/test0/lvtestvolume is mount on /dat

a. 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.

AExplanation:
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.

Answer : A