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RHCSA Exam: Questions & Well Detailed Answers (A+)
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RHCSA Exam: Questions & Well Detailed Answers (A+)
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RHCSA Exam: Questions & Well Detailed Answers (A+)How do you Secure Shell into another system? Right Ans - ssh
<user>@<host>
How do you execute commands on a remote system via Secure Shell without
actually opening a new shell? Right Ans - ssh <user>@<host> <command>
How do you generate a public key and private key file for SSH authentication?
Right Ans - ssh-keygen
How do you export a public key for SSH authentication on a different
machine? Right Ans - ssh-copy-id <user>@<host>
How do you export a *specific* public key for SSH authentication on a
different machine? Right Ans - ssh-copy-id <user>@<host> -i <key file
path>
If an SSH authentication key has a passphrase, how do you cache that
passphrase on the local machine for passwordless authentication? Right
Ans - 1. eval $(ssh-agent)
2. ssh-add <key file path>
What is Cockpit? Right Ans - A server Management Tool
How do you check if a service is running? Right Ans - systemctl status
<service>
How do you start a service? Right Ans - systemctl start <service>
How do you enable a service on startup? Right Ans - systemctl enable
<service>
Which directory contains persistent, system-specific configuration data?
Right Ans - /etc
Which directory is the top of the system's file hierarchy? Right Ans - /
Which directory contains user home directories? Right Ans - /home
,Which directory contains temporary files? Right Ans - /tmp
Which directory contains dynamic data, such as for databases and websites?
Right Ans - /var
Which directory is the administrative superuser's home directory? Right
Ans - /root
Which directory contains regular commands and utilities? Right Ans -
/usr/bin
Which directory contains non-persistent process runtime data? Right Ans
- /run
Which directory contains installed software programs and libraries? Right
Ans - /usr
How do you create a directory? Right Ans - mkdir <directory name>
How do you copy a file? Right Ans - cp <old file> <new file>
How do you copy a directory and its contents? Right Ans - cp -r <old
directory> <new directory>
How do you move (or rename) a file or directory? Right Ans - mv <old file>
<new file>
How do you remove a file? Right Ans - rm <file>
How do you remove a directory containing files? Right Ans - rm -r
<directory>
How do you remove an empty directory? Right Ans - rmdir <directory>
How do you create parent directories while creating a new directory? Right
Ans - mkdir -p <new parent directories>/<new directory>
How do you list the contents of a directory? Right Ans - ls
, How do you list all contents of a directory including hidden files? Right Ans
- ls -a
How do you list the contents of a directory and subdirectories? Right Ans -
ls -R
How do you list the contents of a directory with more detailed information?
Right Ans - ls -l
How do you change directories? Right Ans - cd <directory path>
How do you change directories to the last directory you were in? Right Ans
- cd -
How do you change directories to the parent directory of your current
directory? Right Ans - cd ..
How do you list the contents of a file? Right Ans - cat <file>
How do you create an empty file/update an existing file's "last changed"
timestamp without making any changes? Right Ans - touch <file>
How do you check the working directory? Right Ans - pwd
How do you list directories that are on different file systems? Right Ans - df
How do you create a soft link between two files/directories? Right Ans - ln
-s <existing file path> <link path>
How can you view information about the current user? Right Ans - id
How do you view information another user? Right Ans - id <user>
How do you view process information? Right Ans - ps
How do you view process information for all processes in a terminal? Right
Ans - ps -a
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