RRB NTPC - Linux OS 1000+ MCQ [Solved] PDF Download

1. 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

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

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

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

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

6. 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

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

8. ls - t is used for
A. Sort by name
B. Sort by date
C. Sort by time stamp
D. Sort by alphabetic order
Answer : C

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

10. 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

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

12. Shell is a
A. Program
B. Hardware
C. Account
D. None of the above
Answer : A

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

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

15. To remove a directory which is not empty ____ is used
A. rmdir
B. rmdir -r
C. rm -r
D. rm
Answer : C

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

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

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

19. ls -o is used for
A. Except Group
B. Except Owner
C. Except Size in Byte
D. None of the above
Answer : A

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

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

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

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

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

26. When an user is deleted it home directory contents are also deleted
A. True
B. False
C.
D.
Answer : B

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

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

29. 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

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

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

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

33. -wxrwx-x is equivalent to
A. 567
B. 675
C. 571
D. 672
Answer : C

34. 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

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

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

37. 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

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

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

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

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

43. Linux is a
A. Multi Tasking OS
B. Multi User OS
C. Dedicated Server
D. All of the above
Answer : A

44. 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

45. To change the ownership of a file use
A. chmod
B. chgrp
C. chown
D. change
Answer : C

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

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

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

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

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