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RHCSA Study Set Complete With Accurate Solutions
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RHCSA Study Set Complete With Accurate Solutions
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RHCSAWhile configuring security groups, how do you connect all IPs to your cloud
server Right Ans - 0.0.0.0/0
What is an important requirement to SSH into your cloud server? Right Ans
- A key pair
whoami Right Ans - Displays the user you are currently logged in as
Ip addr show Right Ans - Displays ip address information
free -m Right Ans - Displays free and used memory in the system (-m flag
indicates memory in MB)
df -h Right Ans - view device free space in human readable form
find mnt Right Ans - Displays file systems mounted on the server
What is the bash shell? Right Ans - a command line interpreter that
processes Linux commands
What provides the capability to tab x2 for more command options? Right
Ans - The bash shell
,What partition can you not boot from? Right Ans - LVM (you need to boot
from a standard partition)
How would you disable the auto lock feature? Right Ans - Settings -> power
-> blankscreen -> never
What are the command line symbols to show a normal user and admin?
Right Ans - $= normal user #= admin
How do you login to root? Right Ans - su -
How do you run a command as root? Right Ans - sudo (command)
What program is used to deploy cloud servers and what are instances?
Right Ans - EC2 and instances are the amount of servers
history Right Ans - Displays all commands previously ran
!2 Right Ans - Runs the second command displayed when you run the
history command
!a Right Ans - Runs the command that starts with an a ,when running the
history command
, CTRL + r Right Ans - Re-runs a command that you previously typed.
ps aux Right Ans - Displays all processes running
How do you display the word count for a commands output? Right Ans -
(Command) | wc
How do you redirect the commands output to a specific file path? Right Ans
- > (>> redirects without overriding existing information)
How do you redirect the commands error output and which file path deletes
files sent to it? Right Ans - 2> /dev/null
What is an example of an environment variable that changes the bash shell?
Right Ans - s_colors
alias g=grep Right Ans - Creates a shortcut for the command so you can
now type g to use the command
Standard Input (STOIN), Standard Output (STOUT), and Standard Error
(STOERR) Right Ans - You (STOIN) -> Command -> Terminal (STOUT)
For STOERR the default is STOERR -> Terminal (using 2> redirects STOERR)
who Right Ans - Displays users currently connected to the server
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