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Online Test





1:

Which of the following features of UNIX may be used for inter process communication?


A.
Signals
B.
Pipes
C.
Semaphore
D.
All of these
  Answer Report Discuss

2:

 In a system, if 5 people are currently using the vi editor. then the number of corresponding processes will be


A.
1
B.
5
C.
2
D.
0
  Answer Report Discuss

3:

 The command echo welcome > /dev / tty


A.
Echoes welcome in all the terminals that are switched on.
B.
Echoes welcome in all the terminals that are logged on.
C.
Echoes welcome only in the terminal in which it is run.
D.
Both (a) and (c)
  Answer Report Discuss

4:

 dev/null


A.
Is a file
B.
Has write permission for all
C.
Is the UNIX built-in dustbin
D.
All of these
  Answer Report Discuss

5:

The advantage of binary files over text files is that


A.
It is compact
B.
It can be accessed faster
C.
They are more reliable
D.
All of these
  Answer Report Discuss

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