LINUX INTERVIEW QUESTIONS WITH ANSWERS

101 INTERVIEW QUESTIONS IN LINUX FOR FRESHERS

1.         What command is used to count the total number of lines, words, and characters contained in a file?

            A.countw

B.wcount

C.wc

D.count p

E.None of the above

Answer: Option C

2.         What command is used to remove files?

            A.dm

B.rm

C.delete

D.erase

E.None of the above

Answer: Option B

3.         What command is used to remove the directory?

            A.rdir

B.remove

C.rd

D.rmdir

E.None of the above

Answer: Option D

4.         What command is used with vi editor to delete a single character?

            A.x

B.y

C.a

D.z

E.None of the above

Answer: Option A

5.         What hardware architectures are not supported by Red Hat?

            A.SPARC

B.IBM-compatible

C.Alpha

D.Macintosh

E.None of the above

Answer: Option D

6.         The physical layer of a network

            A.constructs packets of data and sends them across the network

B.controls error detection and correction

C.defines the electrical characteristics of signals passed between the computer and communication devices

D.All of the above

E.None of the above

Answer: Option C

7.         What TCP/IP protocol is used for remote terminal connection service?

            A.UDP

B.RARP

C.FTP

D.TELNET

E.None of the above

Answer: Option D

8.         How many networks and nodes per network, are allowed by the Class B network?

            A.127 networks and 16,777,216 nodes per network

B.16,384 networks and 65,534 nodes per network

C.2,097,152 networks and 254 nodes per network

D.All of the above

E.None of the above

Answer: Option B

9.         What service is used to translate domain names to IP addresses?

            A.NFS

B.SMB

C.NIS

D.DNS

E.None of the above

Answer: Option D

10.       Which of the following command is used to create a Linux installation boot floppy?

            A.mkboot disk

B.bootfp disk

C.ww and rawwrite

D.dd and rawrite

E.None of the above

Answer: Option D

11.       How can you add Jiju, a new user, to your system?

            A.Using useradd

B.Using adduser

C.Using linuxconf

D.All of the above

E.None of the above

Answer: Option D

12.       What file specifies the order in which to use specified name services?

            A./etc/services

B./etc/nsorder

C./etc/nsswitch.conf

D./etc/hosts

E.None of the above

Answer: Option C

13.       How many primary partitions can exist on one drive?

            A.16

B.4

C.2

D.1

E.None of the above

Answer: Option B

14.       In which directory can you store system user default files used for creating user directories?

            A./usr/tmp

B./etc/default

C./etc/skel

D./etc/users

E.None of the above

Answer: Option C

15.       How could you install the file ipchains-1.3.9-5.i386.rpm?

            A.rpm -qip ipchains

B.rpm -Uvh ipchains

C.rpm -i ipchains* .i386.rpm

D.rpm -e ipchains-1.3.9-5.i386.rpm

E.None of the above

Answer: Option C

16.       What does FSF stand for?

            A.Free Software File

B.File Server First

C.First Serve First

D.Free Software Foundation

E.None of the above

Answer: Option D

17.       Which of the following is a valid format for mounting a CD-ROM drive?

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

B.mount /dev/cdrom

C.mount /mnt/cdrom

D.All of the above

E.None of the above

Answer: Option D

18.       What command do you use to create Linux file systems?

            A.fdisk

B.mkfs

C.fsck

D.mount

E.None of the above

Answer: Option B

19.       Which of the following command can you execute to count the number of lines in a file?

            A.lc

B.wc - l

C.cl

D.count

E.None of the above

Answer: Option B

20.       Which of the following is not a communication command?

            A.grep

B.mail

C.mesg

D.write

E.None of the above

Answer: Option A

21.       What command is used to display the characteristics of a process?

            A.au

B.ps

C.du

D.pid

E.None of the above

Answer: Option B

22.       What command is not used to list the files chap01, chap02 and chap04?

            A.ls chap*

B.ls chap[124]

C.ls - x chap0[124]

D.ls chap0[124]

E.None of the above

Answer: Option B

23.       What command is used with vi editor to replace text from cursor to right

            A.S

B.s

C.R

D.r

E.None of the above

Answer: Option C

24.       What sign is used to back up over typing errors in vi?

            A.!

B.$

C.#

D.@

E.None of the above

Answer: Option C

25.       What sign is used to erase or kill an entire line you have typed and start you are on a new line (but not display a new prompt)?

            A.!

B.$

C.#

D.@

E.None of the above

Answer: Option D

26.       What command is used to sort the lines of data in a file in alphabetical order?

            A.sort - r

B.st

C.sh

D.sort

E.None of the above

Answer: Option D

27.       What command is used with vi editor to save file and remain in the editing mode?

            A.x

B.q!

C.:w

D.:q

E.None of the above

Answer: Option C

28.       What command is used with vi editor to move back to the beginning of a word?

            A.w

B.e

C.a

D.b

E.None of the above

Answer: Option D

29.       What command is used with vi editor to search a pattern in the forward direction?

            A.??

B.//

C.?

D./

E.None of the above

Answer: Option D

30.       What command is used to add printing jobs to the queue?

            A.lpd

B.lpr

C.lpq

D.lpc

E.None of the above

Answer: Option B

31.       What protocol(s) is(are) allowed a user to retrieve her/his mail from the mail server to her/his mail reader?

            A.POP3

B.FTP

C.MAP

D.All of the above

E.None of the above

Answer: Option A

32.       What project is currently developing X server support?

            A.XFree86 Project, Inc.

B.RHAD Labs

C.GNOME Project

D.All of the above

E.None of the above

Answer: Option A

33.       What X-based tool is available for configuring the X Window system?

            A.XConfigurator

B.XF86Setup

C.xf86config

D.All of the above

E.None of the above

Answer: Option B

34.       Which of the following server is used with the BIND package?

            A.httpd

B.shttp

C.dns

D.named

E.None of the above

Answer: Option D

35.       What port does squid listen, by default?

            A.4322

B.2314

C.7334

D.3128

E.None of the above

Answer: Option D

36.       Which of the following is the main Apache configuration file?

            A./etc/apache.conf

B./etc/httpd/config.ini

C./etc/httpd/conf/httpd.conf

D./etc/srm.conf

E.None of the above

Answer: Option C

37.       Which of the following command is used to access an SMB share on a Linux system?

            A.NFS

B.SMD

C.smbclient

D.smbserver

E.None of the above

Answer: Option C

38.       Which of the following command is used to see the services running in NFS server?

            A.rpcinfo

B.serverinfo

C.NFSinfo

D.infserv

E.None of the above

Answer: Option A

39.       In which tcp_wrappers file can you specify to allow all connections from all hosts?

            A./etc/hosts.allow

B./etc/hosts.deny

C./etc/hosts

D./etc/tcp.conf

E.None of the above

Answer: Option A

40.       What does GNU stand for?

            A.GNU's not Unix

B.Greek Needed Unix

C.General Unix

D.General Noble Unix

E.None of the above

Answer: Option A

41.       What shell's wild-card is used to match any number of characters including none?

            A.*

B.?

C.[!ijk]

D.[ijk]

E.None of the above

Answer: Option A

42.       What command is used to list contents of directories?

            A.tar

B.dir

C.lp

D.ls

E.None of the above

Answer: Option D

43.       What command is used with vi editor to append text at end of line?

            A.I

B.i

C.a

D.A

E.None of the above

Answer: Option D

44.       What command is used to copy directory structures in and out?

            A.copy

B.cp - p

C.cpio

D.cp

E.None of the above

Answer: Option C

45.       In OSI network architecture, the dialogue control and token management are responsible of

            A.data link layer

B.transport layer

C.network layer

D.session layer

E.None of the above

Answer: Option D

46.       Layer one of the OSI model is

            A.network layer

B.transport layer

C.link layer

D.physical layer

E.None of the above

Answer: Option D

47.       What layer of OSI determines the interface of the system with the user?

            A.Session

B.Data-link

C.Application

D.Network

E.None of the above

Answer: Option C

48.       What command is used to remove jobs from the print queue?

            A.lpq

B.lpr

C.lprm

D.lpc

E.None of the above

Answer: Option C

49.        Which of the following subdirectory(ies) contains the system boot scripts.

            A./dev

B./bin

C./etc

D./home

E.None of the above

Answer: Option C

50.       What of the following tool is used to check and repair Linux file systems?

            A.mkfs

B.fdisk

C.fsck

D.mount

E.None of the above

Answer: Option C

51.       Which of the following tool is used to partition your hard drive?

            A.mkfs

B.fdisk

C.fsck

D.mount

E.None of the above

Answer: Option B

52.       Where can system and mail logs be found in Ret Hat Linux?

            A./var/log

B./etc/log

C./mail

D.All of the above

E.None of the above

Answer: Option A

53.       What command is used to display and create files?

            A.lyrix

B.ed

C.vi

D.cat

E.None of the above

Answer: Option D

54.       Which of the following command can be used to rename a file in UNIX?

            A.ren

B.mv

C.remove

D.change

E.None of the above

Answer: Option B

55.       What command is used to remove a file?

            A.del

B.mv

C.rm

D.remove

E.None of the above

Answer: Option C

56.       What command is used to display the top of the file?

            A.grep

B.more

C.head

D.cat

E.None of the above

Answer: Option C

57.       What command can be used to get information about yourself?

            A.which

B.pwd

C.i /4

D.who am i

E.None of the above

Answer: Option D

58.       What layer protocol is responsible for user and the application programme support such as passwords, resource sharing, file transfer and network management?

            A.Layer 4 protocols

B.Layer 5 protocols

C.Layer 6 protocols

D.Layer 7 protocols

E.None of the above

Answer: Option D

59.       What package group will you select during the custom configuration to enable the machine to communicate with Windows clients?

            A.SMB (Samba) Connectivity

B.IPX/NetWare Connectivity

C.Dial-up Workstation

D.All of the above

E.None of the above

Answer: Option A

60.       Which of the following tool allows you to change your default X Window desktop?

            A.switchdesk

B.intrc

C.xinitre

D.Xchange

E.None of the above

Answer: Option A

61.       Which of the following is the main Apache configuration file?

            A.httpd.conf

B.apache.con

C./etc/profile

D.system.ini

E.None of the above

Answer: Option A

62.       What command is used to sort the lines of data in a file in reverse order?

            A.sort - r

B.st

C.sh

D.sort

E.None of the above

Answer: Option A

63.       What command is used to print a file?

            A.lp

B.pg

C.prn

D.print

E.None of the above

Answer: Option A

64.       The command chmod 761 letter is equivalent to

            A.chmod 4=7, g = 6, o = 1 letter

B.chmod a = 761 letter

C.chmod u = rwx, g = rw, o = x letter

D.chmod 167 letter

E.None of the above

Answer: Option C

65.       What command is used with vi editor to move forward to the end of a word?

            A.c

B.d

C.b

D.e

E.None of the above

Answer: Option D

66.       The IP address are based on

            A.16-bit addresses

B.32-bit addresses

C.64-bit addresses

D.8-bit addresses

E.None of the above

Answer: Option B

67.       What TCP/IP protocol is used for file transfer with minimal capability and minimal overhead?

            A.TELNET

B.TFTP

C.FTP

D.RARP

E.None of the above

Answer: Option B

68.       What TCP/IP protocol is used for transferring electronic mail messages from one machine to another?

            A.FTP

B.SNMP

C.SMTP

D.RPC

E.None of the above

Answer: Option C

69.       What command is used to halt a Linux system?

            A.init 0

B.Shutdown -t

C.Shutdown -g -y0

D.Ctrl+Alt+Del

E.None of the above

Answer: Option A

70.       Which daemon is used for the Apache server?

            A.apached

B.httpd

C.html

D.shttp

E.None of the above

Answer: Option B

71.       GNOME is based on

            A.CORBA toolkit

B.COM/DCOM toolkit

C.ORE toolkit

D.OLE DB toolkit

E.None of the above

Answer: Option A

72.       What can he used to set up a firewall on a Linux system?

            A.netstat

B.route

C.trace

D.ipchains

E.None of the above

Answer: Option D

73.       Which program is used to automatically install Red Mat Linux on identical hardware?

            A.bzimage.img

B.tar

C.ghost

D.mkkickstart

E.None of the above

Answer: Option D

74.       What service is not monitored by inetd ?

            A.SSH

B.time

C.ntalk

D.finger

E.None of the above

Answer: Option A

75.       Who founded the FSF?

            A.Linus Torvalds

B.Richard Stallman

C.Bob Young

D.All of the above

E.None of the above

Answer: Option B

76.       What shell's wild-card is used to match a single character?

            A.[!ijk]

B.[ijk]

C.?

D.*

E.None of the above

Answer: Option C

77.       What command is used to copy a file?

            A.tar

B.cpio

C.cp

D.copy

E.None of the above

Answer: Option C

78.       What command is used to display your current working directory?

            A.path

B.pwd

C.prompt $p$g

D.dir

E.None of the above

Answer: Option B

79.       What command is used with vi editor to move the cursor to the left?

            A.h

B.k

C.j

D.i

E.None of the above

Answer: Option A

80.       What command do you use to add routes to a Linux router?

            A.addroute

B.route

C.netstat

D.net

E.None of the above

Answer: Option B

81.       Which of the following command is used to mount NFS filesystems?

            A.nfsmount

B.knfsd

C.mount

D.All of the above

E.None of the above

Answer: Option C

82.       To build a modularized kernel, the kernel-headers and kernel-source packages must first be installed. Where will you find the kernel-headers and kernel-source?

            A./usr/local

B./usr/src/linux

C./usr/sre/redhat

D./usr/bin

E.None of the above

Answer: Option B

83.       After you have compiled your kernel, what do you have to edit to boot your new kernel image?

            A./boot/lilo.conf

B./etc/conf.modules

C./etc/named.boot

D./etc/lilo.conf

E.None of the above

Answer: Option D

84.       To create an installation boot floppy disk from Linux (or another Unix) machine, what command could you use?

            A.fdisk

B.fsck

C.dd

D.rawrite

E.None of the above

Answer: Option C

85.       You just added a new user, kara, to the system. What group is kara added to by default?

            A.root

B.kara

C.group

D.user

E.None of the above

Answer: Option B

86.       What are the appropriate Hex codes for setting Linux swap and Linux native partition types in fdisk?

            A.82 and 83

B.92 and 93

C.63 and 64

D.82 and 85

E.None of the above

Answer: Option A

87.       What command do you use to delete a file?

            A.rename

B.delete

C.rm

D.cp

E.None of the above

Answer: Option C

88.       Which of the following command lists the last 10 lines of a file?

            A.grep

B.tail

C.head

D.cat

E.None of the above

Answer: Option B

89.       What command is used to terminate a process?

            A.kill

B.cancel

C.haltsys

D.shutdown

E.None of the above

Answer: Option A

90.       What command is used with vi editor to delete three words?

            A.3$d

B.3 dw

C.3 x

D.3 dd

E.None of the above

Answer: Option B

91.       What command is used to assign only read permission to all three categories of the file'letter'?

            A.chmod u + r, g + r, o - x letter

B.chmod ugo = r letter

C.chmod a - rw letter

D.chmod go + r letter

E.None of the above

Answer: Option B

92.       What command is used with file named 'letter' to remove the executable permission from the user and assign read permission to the group and others?

            A.chmod go + x, u - x letter

B.chmod g - x, uo + r letter

C.chmod go + r, u + x letter

D.chmod u - x, go + r letter

E.None of the above

Answer: Option D

93.       What command is used to assign executable permission to the owner of the file named "letter"?

            A.chmod ugo + x letter

B.chmod u + x letter

C.chmod u + w letter

D.chmod g + x letter

E.None of the above

Answer: Option B

94.       What command is used to compare the files?

            A.ccp

B.du

C.cmp

D.comp

E.None of the above

Answer: Option C

95.       What command is used to summarize the disk usage?

            A.disk

B.du

C.fdisk

D.chkdsk

E.None of the above

Answer: Option B

96.       What command is used to list the jobs currently in print queues?

            A.lpq

B.lpr

C.lprm

D.lpc

E.None of the above

Answer: Option A

97.       Which of the following format of partition tables does Linux use?

            A.Linux

B.BSD

C.UnixWare

D.DOS

E.None of the above

Answer: Option D

98.       Which of the following NIS clients returns the name of the NIS server used by the NIS client?

            A.ypwhich

B.ypbind

C.ypcat

D.yppoll

E.None of the above

Answer: Option A

99. wtmp and utmp files contain:

            A. Temporary system data

            B. User login-logout log

            C. The user’s command execution log

            D. The user’s su and sudo attempts

E. None of the above

Answer: Option B

100. What hardware architectures are not supported by Red Hat?

            A. SPARC

            B. IBM-compatible

            C. Alpha

            D. Macintosh

E. None of the above

Answer: Option D

101. Which command is used to set terminal IO characteristic?

A. tty

            B. ctty

            C. ptty

            D. stty

E. None of the above

Answer: Option D