Linux OS MCQ Solved Paper for ISRO Recruitment

1. ls j?e - output will be
A. Filenames with 3 charcter
B. Filenames with 4 charcter
C. Filenames with 5 charcter
D. Filenames with 10 charcter
Answer : A

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

3. Read & Write permission means
A. 1
B. 6
C. 2
D. 0
Answer : B

4. Home directory of root is
A. /home
B. /bin
C. /root
D. /boot
Answer : C

5. The core of Linux OS is also called
A. Kernel
B. Shell
C. root
D. bash
Answer : A

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

7. 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

8. 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

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

10. 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

11. 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

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

13. 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

14. 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

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

16. Password is applied using
A. psswd
B. pssword
C. uerpasswd
D. passwd username
Answer : D

17. 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

18. To view all the installed RPM packages use
A. rpm -qa
B. rpm -iv
C. rpm -h
D. rpm -I
Answer : A

19. 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

20. Samba password and user password are same
A. True
B. False
C.
D.
Answer : B

21. 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

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

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

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

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

26. 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

27. _______ will add contents to an existing file
A. cat > file
B. cat >> file
C. cat file | file1
D. cat file > file1
Answer : B

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

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

30. For a user _______ is an autoexec.bat equivalent file in Linux
A. .bashrc
B. .bash_rc
C. .bash_profile
D. .bashprofile
Answer : C

31. 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

32. 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

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

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

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

36. To give all permission to a file to all users the command is
all of the above
A. chmod a+777 file
B. chmod a+rwx file
C. chmod ugo+7 file
D. none of the above
Answer : B

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

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

39. The X-Window system in Linux is a
A. program development environment
B. graphical user interface
C. tool to connect Linux with Windows
D. none of the above
Answer : B

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

41. who -h is used to
A. Print column headings
B. Hide detail.
C. Hide user name.
D. All of the above.
Answer : A

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

43. Hidden file can be viewed using
A. ls -l
B. ls -a
C. ls -h
D. None of the above
Answer : B

44. The command to check a partition is
A. fsck
B. fstab
C. fdisk
D. diskdruid
Answer : A

45. All device files are stored in
A. /device
B. /etc/dev
C. /bin
D. /dev
Answer : D

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

47. /dev is used for
A. Executable file
B. Contains include file
C. Contain compiler file.
D. Device file & resource file.
Answer : D

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

49. To create multiple directories in one shot ________ is used
A. mkdir
B. mkdir -a
C. mkdir -p
D. mkdir -h
Answer : C

50. Samba is actually a
A. Share
B. File server
C. File
D. None of the above
Answer : B