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Wednesday, October 7, 2020

MOST IMPORTANT MCQ (COMPUTER SCIENCE) QUESTIONS ASKED IN VARIOUS COMPTETIVE EXAMS

    MOST IMPORTANT MCQ 

     (COMPUTER   SCIENCE)

     QUESTIONS ASKED IN

                VARIOUS 

       COMPTETIVE EXAMS         

MOST IMPORTANT MCQ (COMPUTER SCIENCE) QUESTIONS ASKED IN VARIOUS  COMPTETIVE EXAMS


1 .Command used to 


count the total number


of words,line and


characters


A.countw

B.wcount

C.wc

D.countp

Answer : C  wc


2 The Command that is used to Remove 

file 

A.dm

B.rm

C. delete

D.None of the above

ANS :  B  rm 

 

3 The Command that is used to Remove directory

A.rdir

B.remove

C.rd

D. rmdir

E. None of the above 

Ans : D rmdir


4 VI editor to delete a single character

A  X

B  Y

C  Z

D  None of above

Ans : A  X

 

5  RED HAT (Linux) does not  support

 

A SPARC

B  IBM-compatible

C Alpha

D Macintosh

E  None of these

Answer   D  Macintosh


 Protocol used for Remote


 Terminal Connection Service


A UDP

B RARP

C TELNET

D ATP

Ans : C Telnet


7.DNS is


A DOMAIN NAME SYSTEM

B DOMAIN NETWORK SYSTEM

C DOMAIN NAME SERVER

D NONE OF THESE

ANS : A

 

8.LINUX installation hoot floppy created by command like

A. mkboot disk

B. dd and rawrite

C.bootfp disk

D. ww and rawrite

E  None of these

Answer : B


9.Command to ADD new user anurag to your system

A USERADD

B ADDUSER

C Linucconf

D ALL OF THESE

E None of these.

ANS :D ALL OF THESE


10  One drive can have maximum partitions

A  12

B  18

C  4

D  6

Answer : C 4


11 For  creating user directory System user default files are stored in

A  user/skel

B  user/temp

A  user/default

D  None of the above

ANSWER : A


12. How can you install the files ipchains  1.3.9-5 .i386.rpm 

A   rpm -i ipchains* .i386.rpm

B   rpm -qip ipchains* .i386.rpm

C  rpm -i ipchains.i386.rpm

D  rpm -e ipchains* .i386.rpm

ANSWER  A

 

13  The full form of FSF is

A  first file first

B Free software  Foundation

C Free software File

D None of the Above

Answer : B


14. which command is used in

 linux for using cd rom ?

A  mount -t iso9660 /dev/cdrom / mnt/cdrom

B mount /dev/cdrom

C mount/mnt/cdrom

D All of the above

E  None of these 

Answer D


15. Linux file system is created by

A  fsck

B mkfs

C mount

D None of these.

ANSWER  B

 

16 Command to count the Number of lines in a file

A WC-c

B WC-p

C WC-l

D CL

E COUNT

Answer : C

17

Which is not a Communication command

A grep

B write

C mesg

D mail

ANSWER  C mesg


18

Which command is used to show the details regarding   process

A  pid

B  au

C  ps

D None of the above

ANSWER  C ps


19

Which command is not used to list the files title 01 ,title 02 and title 04

A  ls title*

B   ls title0[124]

C   ls title[124] 

D  ls - x title0[124]

ANSWER : C


20  command  to replace text from cursor to right

A  s

B  c

C  r

D  R

ANSWER  D


21 Command used toback up over typing error in VI

A  !

B  @

C    #

D   $

ANSWER  C #


22 What sign is used to kill and erase a entire line

when you keyed in a character and  start a new line and a new prompt will not be

visible to you ?

A  #

B  $

C  !

D  @

ANSWER  D @


23 Command used to sort the line of a data in a file in a alphabetical order ?

A  sort-r

B sort

C  sh

D st

ANSWER : B


24. Command in the VI editor to save file and remain in the editing mode.

A   :q!

B   :x

C   :q

D  :w

ANSWER : D


25 Which command in VI editor is used to move back to beginning of the word ?

A   b

B   c

C   w

D  e

ANSWER :  A


26  Which command in VI editor is used to search a pattern in a forward direction  ?

A  /

B   ?

C  ??

D  //

ANSWER  : A


27 Which command is used to add printing jobs to the queue?

A  lpr

B lpd

C  lpr

D lpq

ANSWER  A


28  which protocal is are allowed a user  to retrieve his /her mail from the for

mail server to his/her mail reader


A   POP3

B   FTP

C   MAP

D   ALL OF THE ABOVE

ANSWER :   A  POP3


29 . WHICH PROJECT IS DEVELOPING X SERVER SUPPORT

A  XFree86 Project, Inc.

B  RHAD

C  GNOME PROJECT

D ALL OF THESE. 

ANSWER :   A


30. WHAT  X BASED TOOL IS USED FOR CONFIGUIRING X  WINDOW  SYSTEM

A  XF86Setup

B  XF86 config

C  All of the above

D  None  of these

 

ANSWER :   A


31. which server is used for the BIND package ?

A  name

B named

C https

D  dns

ANSWER:  B


32 WHICH PORT DOES 


SQUID LISTEN BY 


DEFAULT ?


A 23471

B  4567

C  4324

D  3128

ANSWER : D 


33 Which command is used to access an accessn an SMB share on a linux  system ?

A  SMD

B  smbclient

C  NFS

D DNS

ANSWER : B


34 Routing is performed by 

which Layer of  OSI ?

A Physical

B Data Link

C Network

D ALL


ANSWER C 

35 RPM stand for

A Red hat package manager

B uses for dynamic ip

C for installing /uninstalling packages

D none of the above

ANSWER : A


36 Command for specific package with RPM

A rpm-m

B rpm-p

C rpm-q

D rpm-l

ANSWER : C


37  WHO FOUNDED THE LINUX KERNEL

A RICHARD JOHN

B BILL GATES

C LINUS TORVALDS

D MICHAL JOUGLAS 

ANSWER : C

 

38 Pine,  MUA and MTA are  ?

A Linux protocol

B linux file system

C Default Red Hat Linux Email System

D None of these 

ANSWER : C


39 Which command can force all buffers to 

disk?

A fflush

B sync

C save

D None of the above


ANSWER B SYNC

 

40  LILO IS

A LINUX LOADER

B LINUX BOOT LOADER

C TOOL USE TO BOOT THE KERNEL ON X86 HARDWARE.

D ALL OF THE ABOVE


ANSWER : D

 

 41  Which command is used to set user and group quotas?

A/sbin/usergrpquota

B /sbin/gpquota

C /sbin/epquota

D /sbin/edquota


ANSWER : D


42 COMMAND USED TO 

HALT A LINUX SYSTEM ?

A init 0

B power off

C  ctrl alt delete

D shut down


ANSWER A


43 WHICH DAEMON IS USED FOR 

APACHAE SERVER ?

A HTTPDD

B SMTP

C HTTP

D  HTTPD


ANSWER D 

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