Linux final Exam sagar sir

How to add more PV to existing VG.

• vgcreate centos /dev/sda1

• vgcreate centos sda1

• vgextend centos /dev/sda1

•  vgdisplay centos /dev/sda1

How to reduce existing LV

• mount , lvreduce , reduce-fs,umount

• umount,reduce-fs,lvreduce,mount

• umount, lvreduce,reduce-fs,mount

•  lvreduce,reduce-fs,mount,umount

print the lines ending with /bin/bash from /etc/passwd

• cat /etc/passwd | grep ^/bin/bash

• cat /etc/passwd | grep $/bin/bash

• cat /etc/passwd | grep /bin/bash$

•  

  cat /etc/passwd | grep /bin/passwd$ 

  
  
  

which is true statement below. 

• ext4 can not be used in lvm

• ext3 is not used in linux

• xfs file system can not be reduced.

• fat file system can not be used in linux 

  
  

What is size of partition table in MBR ?

• 512 byte

• 446 byte

• 64 byte

• 2 byte

Which of the following have 128 partition

• MBR

• GPT

• chatGPT 

  
  

• MyGPT

What is true about RAID 0 configuration.

• disk mirroring

• disk striping 

  
  

• combination of mirroring and striping

• parity bit.

what is true about RAID 1 configuration.

• a disk mirroring 

  
  

• a disk striping

• mirroring with parity bit.

• parity bit with striping

when you ping google.co.in from where system search IP first ?

•  /etc/passwd 

  
  

• /etc/hosts

•  /etc/resolv.conf 

  
  

• /etc/nsswitch.conf

  
  

if we run nslookup which file get checked ?

•  /etc/hosts

•  /etc/dnsresolv.conf

•  /etc/resolv.conf

•  /etc/resolve.conf