Practice Pakistan's most useful MCQs for competitive exams

Which of the following commands can be used to get information about all users who are currently logged into the system ?

• (A)  which
• (B)  who
• (C)  who am i
• (D)  1 /u

Answer

Submitted By :Ali Uppal

Which command is used to copy a file wb with the same name from the programs directory to the misc directory ?

• (A)  copy programs/wb misc/wb
• (B)  cp programs/wb misc
• (C)  tar programs/wb misc/wb
• (D)  copy a:programs/wb b:misc/wb

Answer

Submitted By :Ali Uppal

Which shell’s wild-cards is used to match a single character ?

• (A)  *
• (B)  ?
• (C)  [ijk]
• (D)  [!ijk]

Answer

Submitted By :Ali Uppal

Which of the following is invalid filename ?

• (A)  shutry
• (B)  TRY
• (C)  trial
• (D)  None of the above

Answer

Submitted By :Ali Uppal

Which of the following keys is used to move the cursor to the end of the paragraph?

• (A)  }
• (B)  {
• (C)  |
• (D)  $

Answer

Submitted By :Ali Uppal

What command is used to list the jobs currently in print queues ?

• (A)  lpq
• (B)  lpr
• (C)  lprm
• (D)  lpc

Answer

Submitted By :Ali Uppal

What can he used to set up a firewall on a Linux system ?

• (A)  netstat
• (B)  route
• (C)  trace
• (D)  ipchains

Answer

Submitted By :Ali Uppal

Where can system and mail logs be found in Ret Hat Linux ?

• (A)  /var/log
• (B)  /etc/log
• (C)  /mail
• (D)  All of the above

Answer

Submitted By :Ali Uppal

What command is used to display a file contents in octal form ?

• (A)  oct
• (B)  of
• (C)  od
• (D)  cd

Answer

Submitted By :Ali Uppal

Which class network is used for a collection of a small number of networks with a large number of nodes ?

• (A)  Class A
• (B)  Class B
• (C)  Class C
• (D)  All of the above

Answer

Submitted By :Ali Uppal