ComputerScience Quiz 15

Which of the following is used only for data entry and storage, and never for processing?
a. Mouse
b. Dumb terminal
c. Micro computer
d. Dedicated data entry system
Answer: b
Explanation: Dumb terminals are those that can interpret a limited number of control codes.

Non-volatile storage needs to have a _________ where the loses in future can be recovered.
a) Dump
b) Recover place
c) Disk
d) Redo plan
Answer: a
Explanation: The basic scheme is to dump the entire contents of the database to stable storage periodically—say, once per day.

Which symbol is used to separate more than one command in the same command line?
A.$
B.#
C.:
D.;   
Ans:D

The File that contains a set of instructions which are performed when a user logs in, is
A..exrc
B..profile 
C..autoexec
D.autoexec.bat 
Ans:B


The octal representation 652 indicates
A.Execute permission for the owner
B.Write permission for others 
C.Read and write permission of groups
D.All of the above
Ans:B


Which command is used to move all files to the bin sub-directory of the parent directory?
A.mv *.* /bin/
B.mv * /bin/*
C.mv * ../bin  
D.mv * ../bin *.*
Ans:C


Which of the following special shell variables is used to process number of the current shell?
A.$!
B.$$  
C.$0
D.$*
Ans:B

Which command is used with vi editor scroll half page backward?
A.[Control-d]
B.[Control - u] 
C.[Control-c]
D.[Control -P]
Ans:B

Which command is used with vi editor to move cursor forward to first occurrence of character 'ch' in the current line?
A.tch
B.Fch   
C.rch
D.ech
Ans:B

Which of the following commands is used to save the output of the who command in a file named user.lst, as well as display it?
A.who | tee user.lst
B.who > user.lst
C.who >> user.lst
D.who < user.lste
Ans:A


Which of the following shell's wildcards are used to match any number of characters including none?
A.[ijk]
B.[!ijk]
C.?
D.* 
Ans:D

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