Linux OS 1000+ MCQ with answer for NDA

1. The --------- command sorts lines of all the named files.
A. desc
B. cp
C. sort
D. ls -l
Answer : C

2. To search a pattern in a file _________ can be used
A. grep
B. egrep
C. find
D. search
Answer : A

3. init 6 is
A. Shutdown
B. Restart
C. Text mode
D. Graphics mode
Answer : B

4. To delete user the command is
A. rm <username>
B. delete <username>
C. userdel <username>
D. any one of the above
Answer : C

5. What will be the output of the command 'tail sample'?
A. Last 10 lines of the file.
B. Last 15 lines of the file
C. Last 5 lines of the file
D. First 10 lines of file.
Answer : A

6. Protocols used by Linux are
A. TCP/IP &UUCP
B. UDP & UUCP
C. PPP & UDP
D. None of the above
Answer : A

7. Which command is used to see the content of a file
A. more
B. cp
C. cat
D. rmdir
Answer : C

8. The symbol of wildcard(s) is
A. w
B. `
C. ? *
D. None of the above.
Answer : C

9. wc -l will give the
A. Number of lines
B. Number of characters
C. Number of words
D. All of the above
Answer : A

10. All run levels are stored in
A. /etc/fstab
B. /etc/init
C. /etc/inittab
D. /etc/rc.d
Answer : C

11. To start graphics mode use
A. init 3
B. init 5
C. init 0
D. init 6
Answer : B

12. Linux kernel file name is
A. vmlinux
B. vmlinuz
C. lynx
D. linux
Answer : B

13. Default file system type of Linux is
A. etx
B. ext2
C. etx3
D. mimix
Answer : C

14. Output of the command 'wc <filename>' is
A. Show only line
B. Show only word.
C. Show alphabet, line, word.
D. Show only file name.
Answer : C

15. _______ is used to change the file/folder permission
A. chown
B. chmod
C. mod
D. chgrp
Answer : B

16. During Linux booting the init program is called by
A. ROM
B. Bootstrap
C. Sysinit
D. Kernel
Answer : D

17. To check if a service is running, the command is
A. Ntsysv
B. setup
C. /etc/rc.d/init.d/service
D. /etc/serice
Answer : A

18. A user is logged in on a terminal; root tries to delete the user. Will the user be deleted?
A. Yes
B. No
C.
D.
Answer : B

19. To setup a Firewall, the command is
A. ntsysv
B. setup
C. /etc/firewall
D. /etc/install
Answer : B

20. mkdir - p is used for
A. Making directory under parent directory.
B. Making directory non existing parent directory.
C. Specified the mode of directory.
D. None of the above
Answer : B

21. sort file, will sort the contents of the file and the effect will be reflected in the file
A. True
B. False
C.
D.
Answer : B

22. Which command is used to compare files?
A. cmp
B. diff
C. head
D. All of these
Answer : A

23. Which command is used for character translation?
A. td
B. vi
C. tr
D. tail
Answer : C

24. The main function of grep is
A. look for numeric
B. look for string match a regular expression..
C. look for string without regular expression.
D. None of them.
Answer : B

25. If there is any problem with the command, the error is given by
A. Kernel
B. Shell
C. root
D. None of the above
Answer : B

26. A swap partition is actually
A. Primary partition
B. Extended partition
C. Extended memory
D. Virtual memory
Answer : D

27. To unmount a filesystem ________ command is ised
A. Umount
B. unmount
C. dismount
D. mount -u
Answer : A

28. Output of 'sort > shoppinglist' is
A. Sorting file but not save in file.
B. Without sorting but save in file.
C. Sorting and save in a file.
D. All of the above.
Answer : C

29. To get information about the Ethernet card, ___________ command is used
A. ipconfig
B. ifconfig
C. eth0
D. man Ethernet
Answer : B

30. In comm the 2nd column displays
A. Lines unique in the first file
B. Lines unique in the second file
C. Lines common in the both file
D.
Answer : B

31. ________ gives information about an user
A. who
B. who am i
C. who -i
D. None of the above
Answer : B

32. Which command is used to see the system date?
A. Time
B. Date
C. Month
D. None of these
Answer : B

33. What is the meaning of chmod 444 stuf?
A. Gives all user write permission.
B. Gives all user execute permission.
C. Gives all user read permission.
D. All of the above.
Answer : C

34. An user can login without password
A. True
B. False
C.
D.
Answer : A

35. User can be assigned to a group while creating the user. The command for this is
A. adduser -g
B. useradd -a
C. aduser -a
D. useradd -g
Answer : A

36. What is the relation between grep & egrep
A. egrap is a mother of grep.
B. Egrap is totally difference
C. Egrap is a another version of grep.
D. None of these.
Answer : C

37. To delete an user along with its home directory, the command is
A. userdel -d username
B. userdel -D username
C. userdel -r username
D. userdel -R username
Answer : C

38. _______ is used to rename files
A. ren
B. move
C. rename
D. mv
Answer : D

39. The encrypted password is stored in which field of /etc/password file ?
A. first
B. second
C. third
D. last
Answer : B

40. There can be only ----- job in foreground.
A. 1
B. 2
C. 3
D. 4
Answer : A

41. To access a directory the minimum permission required is
A. r
B. w
C. x
D. All
Answer : C

42. User passwords are stored in
A. /etc/password
B. /root/password
C. /etc/passwd
D. /root/passwd
Answer : C

43. The mounted partition information is stored in
A. /etc/passwd
B. /etc/fstab
C. /etc/inittab
D. /sbin/lilo
Answer : B

44. The type of shell mostly used for Linux is
A. bash
B. korn
C. bourne
D. C-shell
Answer : A

45. To see the process status which command you will use?
A. chmod
B. ps
C. ls-l
D. head
Answer : B

46. The command to view the partition information is
A. fsck
B. fstab
C. fdisk
D. diskdruid
Answer : C

47. cat > abc, if the requested file does not exist, error will be given by
A. Kernel
B. Shell
C. root
D. None of the above
Answer : A

48. In practical, at the most _____ terminals can be opened at a time
A. 3
B. 6
C. 10
D. 12
Answer : B

49. Linux is a dedicated server
A. True
B. False
C.
D.
Answer : B

50. While installing Linux, users can be created
A. True
B. False
C.
D.
Answer : A