Unix/Lunux/Linux Mcqs Questions Set 2 Sample Test,Sample questions

Question:
A user does a chmod operation on a file. Which of the following is true?

1.The last accessed time of the file is updated

2.The last modification time of the file is updated

3.The last change time of the file is updated

4.None of the mentioned


Question:
Any files attribute information is stored in which structure on the disk

1. Inode

2.Data blocks

3.File blocks

4.Directory file


Question:
 All device files are stored in which directory?

1./etc

2./bin

3./dev

4./usr


Question:
Binary or executable files are:

1.Regular files

2.Device files

3.Special files

4.Directory files


Question:
Effective group id can be set using following permission

1.0777

2.2666

3.4744

4.1711


Question:
Effective user id can be set using following permission

1.0777

2.2666

3.4744

4.1711


Question:
Executing the cd .. command when at the root level causes

1.Error message indicating the user cant access beyond the root level

2.Behavior is unix-flavor dependent

3.Results in changing to the home directory

4.Nothing happens


Question:
How do you add (append) a file file1 to the example.tar file

1.no you cannot add a file to example.tar

2.tar -cvf example.tar file1

3.tar -rvf file1 example.tar

4.tar -evf file1 example.tar


Question:
How do you rename file new to file old ?

1.mv new old

2.move new old

3.cp new old

4.rn new old


Question:
How to execute ls command inside a vi editor?

1.!ls

2.ls

3.:!ls

4.we can’t execute


Question:
If a file is removed in Unix using rm then

1.The file can be recovered by a normal user

2.The file cannot be recovered by a user

3.The file can be fully recovered provided the sytem is not rebooted

4.The file will be moved to /lost+found directory and can be recovered only by administrator’s intervention


Question:
If the umask value is 0002. what will be the permissions of new directory

1.777

2.775

3.774

4.664


Question:
If user tries to remove (rm) a readonly file (444 permission), what will happen?

1.The file is removed successfully (and silently)

2.The rm command prompts for a confirmation, the command is successful upon confirmation

3.The rm command prompts for a confirmation, however the operation fails because of insufficient permissions

4.The rm command fails because of insufficient permissions


Question:
pwd command displays

1.user password

2.password file content

3.present working directory

4.none of the mentioned


Question:
sed is a command typically used for

1.Perform complex calculations

2.Perform FIFO based non-blocking I/O

3.Modify/print selective contents of a file

4.None of the mentioned


Question:
srwxr-xrw- is a

1.internet socket file

2.unix domain socket file

3.symbolic link

4.shared file


Question:
Sticky bit can be set using following permission

1.777

2.2666

3.4744

4.1711


Question:
The command syntax to display the file sample.txt one page at a time is

1.man sample.txt>more

2.cat sample.txt<more

3.cat sample.txt|more

4.none of the mentioned


Question:
The directory file contains:

1.File names & File Sizes

2.File names & Inode Numbers

3.File names & Address

4.File names & Permissions


Question:
The file permission 764 means:

1.Every one can read, group can execute only and the owner can read and write

2.Every one can read and write, but owner alone can execute

3.Every one can read, group including owner can write, owner alone can execute

4.Every one can read and write and execute


Question:
The permission -rwSr–r– represented in octal expression will be

1. 0777

2.2666

3.4744

4.4644


Question:
The permission -rwxr-sr– represented in octal expression will be

1.0777

2.2766

3.2744

4.2754


Question:
The permission -rwxr-xr-t represented in octal expression will be

1.777

2.1755

3.1754

4.2754


Question:
The permission -rwxr–r– represented in octal expression will be

1.777

2.666

3.744

4.711


Question:
To open a file file1 with cursor at line number 4

1.vi +num file1

2.vi +set num file1

3.vi + set num file1

4.vi +/se nu file1


Question:
What command is used to copy files and directories?

1.copy

2.cp

3.rn

4.cpy


Question:
What communication command provides communication to another user logged on by writing to the bottom of their terminal?

1.talk

2.write

3.chat

4.transmit


Question:
What is the command to set the execute permissions to all the files and subdirectories within the directory /home/user1/direct

1.chmod –r +x /home/user1/direct

2.chmod –R +x /home/user1/direct

3.chmod –f –r +x /home/user1/direct

4.chmod –F +x /home/user1/direct


Question:
When mv f1 f2 is executed which files inode is freed?

1.f1

2.f2

3.new inode will be used

4.no inode is freed


Question:
When you use the ln command, which of the following occurs?

1.a file is created that points to an existing file

2.a file is created that is a copy of an existing file

3.a file is moved from one location to another

4.a file is renamed


Question:
Which are the two types of device files?

1.Character & Block

2.Character & Socket

3.Block & FIFO

4.Input & output


Question:
Which command gives the first byte where the difference is in the file1 & file2?

1.diff

2.cmp

3.comm

4.ls -a


Question:
Which command is used to display all the files including hidden files in your current and its subdirectories ?

1.ls –aR

2.ls –a

3.ls –R

4.Is –l


Question:
Which command is used to set limits on file size

1.fsize

2.flimit

3.ulimit

4.usize


Question:
Which command will you use to see the available routes?

1.show route

2.route status

3.netstat -r

4.none of the mentioned


Question:
Which directory contain device special files?

1./etc

2./etc/dev

3./root/bin

4./dev


Question:
Which is an example for block special file?

1.Virtual Terminal

2.CD-ROM

3.Terminal

4.Serial modem


Question:
Which is an example for character special file?

1.Hard disk

2.CD-ROM

3.Terminal

4.Memory


Question:
Which of the following commands can be used to change default permissions for files and directories at the time of creation

1.Chmod

2.Chown

3.Umask

4.Chgrp


Question:
Which of the following commands can be used to copy files across systems?

1.ssh

2.telnet

3.rsh

4.ftp


Question:
Which of the following commands will allow the user to search contents of a file for a particular pattern

1.touch

2.grep

3.find

4.ls


Question:
Which of the following is not a valid file type on Linux

1.Socket

2.Softlink

3.Inode

4.FIFO


Question:
Which of the following is not correct statement regarding file types?

1.Hard links share same inode number

2.Soft links cannot be created across partitions

3.Socket files are Unix domain sockets

4.Character file is a special file


Question:
Which of the following time stamps need not exist for a file on traditional unix file system

1.Access Time

2.Modification Time

3.Creation Time

4.Change Time


Question:
Which one shows the name of the operating system?

1.uname -n

2.uname -r

3.uname -o

4.uname –m


Question:
Which option of rmdir command will remove all directories a, b, c if path is a/b/c

1.–b

2.–o

3.–p

4. –t


Question:
Which represents the user home directory

1. /

2. .

3...

4. ~


Question:
Which screen manipulation command sets the screen back to normal?

1.tput cup

2.tput smso

3.tput rmso

4.tput blink


Question:
Which tar command option is used to list the files in a tape archive format?

1.cvf

2.tvf

3.xvf

4.ovf


Question:
Write the command to display the current date in the form dd/mm/yyyy.

1.date +%d/%m/%Y

2.date +”%d/%m/%Y”

3.date +/%d/%m/20%y

4.date +”/%d/%m/20%y”


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