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Exam (elaborations)

RHCSA Study Set Complete With Accurate Solutions

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RHCSA Study Set Complete With Accurate Solutions

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  • October 24, 2024
  • October 25, 2024
  • 17
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • RHCSA
  • RHCSA
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LeCrae
RHCSA Study Set Complete With Accurate Solutions

While 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

grep -R student /etc Right Ans - grep: searches for files/directories -R:
Looks for sub-directories student: searches for the word student /etc:
searches in /etc

, ls -l /etc | grep host Right Ans - lists files that only have host in the name

What is FHS? Right Ans - Filesystem Hierarchy Standard
defines structure and contents.

The boot directory Right Ans - files needed to boot the system. Ex: vmlinuz-
4.18.0-32 is the kernel (allows the software to talk to the hardware).

The dev directory Right Ans - contains device file for the system to talk to
certain hardware

The etc directoy Right Ans - configuration files. Ex: user password file

home directory Right Ans - individual user directories

usr directory Right Ans - binaries, commands, and software executables

var directory Right Ans - used to write dynamic data. Ex: log files

While in the manual pages how do you search, go to the next result, and go to
the bottom of the manual page. Right Ans - / (word) n G

How many manual page sections are there and what are the 3 important
ones? Right Ans - 9 1 = executable programs, 5 = file formats, and 8 =
system admin commands.

Where could you find related commands in the man pages? Right Ans - See
also

If you are using the man -k commands and are receiving a "nothing
appropriate" error, what command do you use? Right Ans - mandb

man -k user | grep 8 Right Ans - searches man pages for the word user but
only in section 8

What is the minimum amount of information that you need to provide during
Linux installation? Right Ans - Installation destination and the root
password.

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