There are the following statements that are given below which of them are correct about the host command in the Linux operating system?
This command is used to display domain name for specified IP address.
This command is used to display an IP address for the specified domain name.
Both of the above
None of the above
Correct Answer :
C. Both of the above
The host command is used to display the domain name for a specified IP address and vice versa.
Related Questions
Which of the following operator is used to store the exit code of a previous command?
$?
%$
?&
?@
Which of the following operator is used to set and override the permission of a file in chmod command?
+
=
*
-
Which of the following directory contains interrupts related files?
/proc
/dev
/var
/home
Which of the following command is used to print pending tasks?
ptasks
atq
qtasks
atrm
What are the basic components of the Linux operating system?
a) Kernel
b) Kernel Modules
c) Shared Libraries
d) User Programs
Options:
A and B
A, B, and C
B, C, and D
A, B, C, and D
Which of the following command is used to save and quit from the vi editor?
:q
:Q
:wq
:q!
Which of the following command is used to add a key to the SSH agent?
agent
ssh-agent
add-key
ssh-add
Which of the following is used to match any set of characters from the specified file in the grep command?
()
{}
[]
##
Which of the following types of regular expressions are used in the Linux operating system?
a) Basic Regular Expression
b) Extended Regular Expression
c) Crond Regular Expression
d) Perl Regular Expression
Options:
A and B
A, B, and D
A, B, and C
A, B, C, and D
There are the following statements that are given below, which of them are correct about bang bang command in the Linux operating system?
The bang bang command is used to remove commands history.
The bang bang command is used to remove execute last executed command.
The bang bang command is used to display the last login time of the current user.
None of the above
Which of the following command is used to delete till the end of the line in the vi editor?
$
d$
d0
DD
Which of the following command is used to display the list of available groups in the system?
listgroup
list
getent
groups
There are the following statements that are given below, which of them are correct system libraries in Linux operating system?
a) System libraries are a special program.
b) We can use kernel functionalities using system libraries.
c) System libraries are user programs.
d) System libraries used system calls.
Options:
A and B
B and C
A, B, and D
A, B, and C
Which of the following operator is used to execute multiple commands in a single line?
;
%
&&
||
Which of the following command is used to display only directories that exist in the current directory?
ls l | grep ^d
ls | grep ^d
ls l | grep #d
ls l | grep *d
Which of the following command is used to rename the file names that contain text with txt in the current directory?
rename 'r/txt/text' *
rename 'e/text/txt' *
rename 's/txt/text' *
rename 's/text/txt' *
Which of the following command is used to move up in the vi editor?
I
h
j
k
There are the following statements that are given below, which of them are correct about the id command in the Linux operating system?
a) This command describes the user id.
b) This command describes the group id.
c) This command describes the list of groups belongs to the user.
d) All the above
Options:
A and B
A and C
B and C
D
Which of the following command is known as bang bang in the Linux operating system?
##
,
!!
@@
How can we view and add content in the kernel ARP table?
arpmod
arpalter
arptable
arp
Which of the following command is used to forward search for given string in the vi editor?
?string
/string
string
#string
Which exact command is used to remove a non-empty directory?
rmdir -removeall
rmdir -n
rmdir -rf
rmdir -ra
Which of the following command is used to delete current line from the file?
dd
r
x
X
Which of the following command is not used to extract a compressed file?
untar
tar
gunzip
bunzip2
Which command is used to print file content in reverse order line wise, it means, the last line will print first and then print the second last line and so on?
reverse
tac
cat
gedit
What is the full form of JFS?
Just File System
Journaled File System
Joint File System
Joker File System
Which exact command is used to down interface eth0 in the Linux operating system?
ifconfig down eth0
ifdown eth0
down eth0
ifconfig -d eth0
Which of the following command is used to repeat the last command in the vi editor?
Dot (.)
!
@
$
Which command is used to remove an existing group?
removegroup
deletegroup
groupdel
grouprmv
Which option is used to know only system running time using the uptime command?
-p
-u
-l
-k