Which of the following command is used to configure a public key at the SSH server for a user?
ssh-copy-id
ssh-public-key
ssh-public-id
ssh-copy-key
Correct Answer :
A. ssh-copy-id
The ssh-copy-id command is used to configure a public key at the SSH server for a user.
Related Questions
Which command is used to get the path of the current directory?
cdir
dir
pwd
pdir
Which of the following statements are the correct about XXXuniq command?
a) This command is used to delete unique data from a file permanently.
b) This command is used to display a sorted list in which every word will occur only once.
c) We can count the occurrence of a word using uniq command.
d) None of the above
Options:
A and B
A and C
B and C
B and D
Which of the following type of permissions are used for files and directories in the Linux Operating System?
a) Read
b) Write
c) Execute
d) All of the above
Options:
A and B
B and C
A and C
D
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 change the size of MTU?
ifconfig
ifconfig mtu
ifconfig mtu
ifconfig
There are the following options that are given below, which of them are the correct environment variable used in the Linux operating system?
a) SHELL
b) TERM
c) PATH
d) HOME
Options:
A and B
C and D
A, C, and D
A, B, C, and D
How can we view and add content in the kernel ARP table?
arpmod
arpalter
arptable
arp
There are the following statements that are given below, which of them are correct about the /var directory in the Linux operating system?
a) This directory contains log files.
b) This directory contains cache files.
c) This directory contains spool files.
d) All the above
Options:
A and B
A and C
B and C
D
Which command is used to rename the existing group?
rename
rengroup
groupmode
groupmod
By default, how many last lines shown by tail command?
5
8
10
12
By default, which files store output of the command that executed with nohup utility?
nh.out
nohup.out
nohup.txt
nh.txt
Which of the following directories does not take disk space?
a) /proc
b) /dev
c) /var
d) /home
Options:
A and B
A, B, and C
A, B, and D
A, B, C, and D
Which of the following directory contains device files?
/device
/devfile
/dev
/sys
Which command is used to view the specified lines from the start of a file?
start
head
beg
first
There are the following statements that are given below, which of them are correct about Linux shell?
a) Linux shell is a part of Linux kernel.
b) Linux shell provides an environment to execute commands.
c) Linux shell is used to execute scripts.
d) Linux shell is used to operate GPIO pins in the kernel.
Options:
A and B
B and C
A, B, and C
A, B, C, and D
Which exact command is used to change the only modification time of a file in the Linux operating system?
touch -m
touch -k
touch -p
touch l
Which command is used to see what permissions will be provided to the newly created file by default?
default
unmask
permissions
defperm
Which command is used to check network cable is plugged or not?
ifplugstatus
ifcableplug
ifcablestatus
isplugstatus
Which of the following command is used to delete scheduled tasks?
atrm
atdl
atdel
rmtask
There are the following options that are given below, which of the following security mechanism are used in the Linux operating system?
a) Authentication
b) Authorization
c) Cryptography
d) All the above
Options:
A and B
B and C
A and C
D
How to check the version of the ls command?
ls -v
ls --v
ls -version
ls --version
Which of the following command is used to perform mathematical expression and print output on the terminal?
expr
exp
calexp
calexpr
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 piping in the Linux operating system?
a) The piping the process which is used to redirect the output of one command to another command as an input.
b) We use the pipe (|) operator to perform piping.
c) The piping is not supported in Linux; it works only in the UNIX operating system.
d) None of the above
Options:
Only A
Only B
A and B
A and C
Which command is used to copy a file from one location to another location?
copy
copyfile
cp
None of the above
Which command is used to remove a file?
remove
rm
rmfile
delete
Which exact command is used to create a user with a specified name for the home directory, here we will create a user with user1 name and name of the home directory will be MyHome?
useradd -m /MyHome user1
useradd -m -d /MyHome user1
useradd -m -h /MyHome user1
useraddhome /MyHome user1
Which of the following command uses regular expressions in the Linux operating system?
a) grep
b) sed
c) rename
d) bash
Options:
A and B
C and D
A, B, and C
A, B, C, and D
Which command is used to querying DNS to get mapping information about the domain name and IP address?
netstate
nslookup
netinfo
domainlookup
There are the following statements that are given below, which of them are correct about Btrfs File System in Linux?
a) This file system does not use for production purposes.
b) It is used for fault tolerance.
c) It is used for extensive storage configuration.
d) It is used the extended version of JFS.
Options:
A and B
C and D
A, B, and C
A, B, C, and D