05 January 2014

Basic Linux MCQ Questions for Beginners- Set 5

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linux Question and answer in linux
This is set 5 in the ongoing series of MCQ. Hope you have enjoyed the other parts of the series. In this set also, I will cover some more basic Linux questions and their answer. Hope you will like it.

1

Which of the following commands are used to display last 10 line of the file?

tail filename

tail -10 filename

Both A and B

Only B

Answer
Option C is correct, By defualt tail command displays last 10 lines of a file, So command A and B are same.

2

Which of the folloeing file responsible for storing basic information about user like UID , GUI , login shell etc in ?

/etc/passwd

/etc/users

/etc/shadows

None of these

Answer
Option A is correct
/etc/passwd file store all basic information about users.

To see user information type following command in terminal
$ tail -10 /etc/passwd | grep -i shopclues
shopclues:x:1001:1001:Shopclues,,,:/home/shopclues:/bin/bash

Note: Here shopclues is my username

3

Sun Jan 5 11:18:37 IST 2014
hii

Suppose I want to achieve above output using command, which of the following command would help me to achieve this?

date;echo "hii"

date && echo "hii"

Both A and B

date,echo "hii"

Answer
Option C is correct. You can use both command to achieve above output.

4

Which of the following command used to edit and execute command no. 25 in history list ?

history -e 25

fc 25

!25

None of these

Answer
fc <number> is used to edit and execute command according to their serial number

5

Which of the following command is used unmount a filesystem?

demount

unmount

dmount

umount

Answer
Option D is correct.

You can Unmount a file system using following command
$ sudo umount <device like /dev/sda1> or <filesystem like /media/mount_point >

6

Which of the following statement is true in context of "more" and "less" command in linux ?

less command allows you to scroll both ways whereas more command allows you to scroll downward only

less commad load file more fastly than more command

You can use arrows key in less command while you you are not allowed to do so in more command

All of the Above is correct

Answer
Option D is correct answer.

7

Which of the following command use to list file like file1 , file , file12 and file2 ?

ls -l | egrep "file[1]+2"

ls -l | egrep "file[1]+2*"

ls -l | egrep "file1*2+"

ls -l | egrep "file1*2*"

Answer
Option D is correct.
You can use touch command to create above four files and use above command to list all those files

8

$ oneko &

What is the meaning of above command ?

run "oneko" in background

run "oneko" in foreground

stop "oneko"

Above command is wrong

Answer
Option A is correct in
& is used to run any command in background

9

What does rwx r-x r-- means in octal ?

755

743

754

745

Answer
Above permission represents 111 101 100 in binary, so when you calculate it, you will get 754 in octal.

10

Which of the following file contain your CPU infomation?

/proc/cpustats

/proc/cpuitems

/proc/cpuinfo

None of these

Answer
option C is correct.
You can use following command to see your CPU info
$ cat /proc/cpuinfo

That's it.
Hope you Enjoyed the MCQ :)



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1 comment:

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