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Question 1:

There are two different networks and Where and IP Address are assigned on Server. Verify your network settings by pinging Network\’s Host.

Correct Answer: Check the anser in explanation.

vi /etc/sysconfing/network NETWORKING=yes HOSTNAME=station?.example.com GATEWAY= service network restart

2.vi /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 ONBOOT=yes BOOTPROTO=static IPADDR=X.X.X.X NETMASK=X.X.X.X GATEWAY= ifdown eth0 ifup eth0

Question 2:

Configure autofs to make sure after login successfully, it has the home directory autofs, which is shared as /rhome/ldapuser40 at the ip: and it also requires that, other ldap users can use the home directory normally.

Correct Answer: Check the anser in explanation.

# chkconfig autofs on # cd /etc/ # vim /etc/auto.master /rhome /etc/auto.ldap # cp auto.misc auto.ldap # vim auto.ladp ldapuser40 -rw,soft,intr * -rw,soft,intr # service autofs stop # server autofs start # showmount -e # su – ladpuser40

Question 3:

Create a backup file named /root/backup.tar.bz2, which contains the contents of /usr/local, bar must use the bzip2 compression.

Correct Answer: Check the anser in explanation.

cd /usr/local

tar -jcvf /root/backup.tar.bz2*

mkdir /test

tar -jxvf /root/backup.tar.bz2 -C /test/

Question 4:

Configure NTP.

Configure NTP service, Synchronize the server time, NTP server: classroom.example.com

Correct Answer: Check the anser in explanation.

Configure the client: Yum -y install chrony Vim /etc/chrony.conf Add: server classroom.example.com iburst Start: systemctl enable chronyd systemctl restart chronyd Validate: timedatectl status

Question 5:

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.

Correct Answer: Check the anser in explanation.

When you Boot the System, it starts on default Runlevel specified in /etc/inittab:


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.


Restart the System.


You will get the boot loader GRUB screen.


Press a and type 1 or s for single mode ro root=LABEL=/ rhgb queit s


System will boot on Single User mode.


Use passwd command to change.


Press ctrl d

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Question 6:

Configure autofs to automount the home directories of LDAP users as follows:

host.domain11.example.com NFS-exports /home to your system.

This filesystem contains a pre-configured home directory for the user ldapuser11 ldapuser11\’s home directory is host.domain11.example.com /rhome/ldapuser11 ldapuser11\’s home directory should be automounted locally beneath /rhome

as /rhome/ldapuser11

Home directories must be writable by their users

ldapuser11\’s password is \’password\’.

Correct Answer: Check the anser in explanation.

vim /etc/auto.master /rhome /etc/auto.misc wq! # vim /etc/auto.misc ldapuser11 –rw,sync host.domain11.example.com:/rhome/ldpauser11 :wq! #service autofs restart

service autofs reload

chkconfig autofs on

su -ldapuser11 Login ldapuser with home directory # exit

Question 7:

Create a backup

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

Correct Answer: Check the anser in explanation.

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.

Question 8:

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

Correct Answer: Check the anser in explanation.

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

Question 9:

Download to /root, and mounted automatically under /media/cdrom and which take effect automatically at boot-start.

Correct Answer: Check the anser in explanation.

# cd /root; wget # mkdir -p /media/cdrom # vim /etc/fstab /root/boot.iso /media/cdrom iso9660 defaults,loop 0 0 # mount -a mount [-t vfstype] [-o options] device dir

Question 10:

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.

Correct Answer: Check the anser in 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 file system 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

ext2online -d /dev/vg0/lv1 to bring extended size online.

Again Verify using lvdisplay and df -h command.

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