Practice Pakistan's most useful MCQs for competitive exams

How many class A, B and C network IDs can exist ?

• (A)  128
• (B)  126
• (C)  16382
• (D)  2113658

Answer

Submitted By :Ali Uppal

What command is used to compare the files ?

• (A)  ccp
• (B)  du
• (C)  cmp
• (D)  comp

Answer

Submitted By :Ali Uppal

What file contains the list of port numbers (and associated names) monitored by inetd ?

• (A)  /etc/services
• (B)  /etc/nsorder
• (C)  /etc/nsswitch.conf/
• (D)  /etc/hosts

Answer

Submitted By :Ali Uppal

Which command is used with vi editor scroll half page backward ?

• (A)  [Control-d]
• (B)  [Control – u]
• (C)  [Control-c]
• (D)  [Control -P]

Answer

Submitted By :Ali Uppal

Which option will be used with disk free command to include the total amount of disk space in the file system?

• (A)  -t
• (B)  -tt
• (C)  -4
• (D)  -i

Answer

Submitted By :Ali Uppal

Which command is used with vi editor to search a pattern in the forward direction ?

• (A)  /
• (B)  ?
• (C)  //
• (D)  ??

Answer

Submitted By :Ali Uppal

Which of the following files contains information related to password aging ?

• (A)  Shadow
• (B)  password
• (C)  profile
• (D)  All the three

Answer

Submitted By :Ali Uppal

Which command will be used with vi editor to insert text to left of cursor ?

• (A)  s
• (B)  S
• (C)  a
• (D)  i

Answer

Submitted By :Ali Uppal

Which command is used to extract specific columns from the file ?

• (A)  cat
• (B)  cut
• (C)  grep
• (D)  paste

Answer

Submitted By :Ali Uppal

Which of the following command lists the last 10 lines of a file ?

• (A)  grep
• (B)  tail
• (C)  head
• (D)  cat

Answer

Submitted By :Ali Uppal