Red Hat System Administration I (RH124) – RHEL 9 Quiz Questions and Answers
Answer :
df
Explanation :
The 'du' command is used to display the disk usage of a file system in Linux.2. < 2 > Which command is used to mount a file system in Linux?A) mountB) umountC) fdiskD) lsblkAnswer: AExplanation: The 'mount' command is used to mount a file system in Linux.3. < 3 > Which file system type is commonly used in Linux?A) NTFSB) FAT32C) ext4D) HFS+Answer: CExplanation: The ext4 file system type is commonly used in Linux.4. < 4 > Which command is used to create a new file in Linux?A) touchB) mkdirC) cpD) mvAnswer: AExplanation: The 'touch' command is used to create a new file in Linux.5. < 5 > Which command is used to change the ownership of a file in Linux?A) chownB) chmodC) chgrpD) chrootAnswer: AExplanation: The 'chown' command is used to change the ownership of a file in Linux.6. < 6 > Which command is used to search for a file in Linux?A) findB) grepC) locateD) whereisAnswer: AExplanation: The 'find' command is used to search for a file in Linux.
Three tools for compression :
-z , --gzip (tar.gz) - it will compress quickly but the size will not reduce much
-j. --bzip tar.bz2 it will take more time compared to gzip but it will create small size compared to gzip)
-J, --xz tar.xz (it will take long time and it will compressed to the most )
edit the /etc/ssh/ sshd_config con?guration ?le to allow or prohibit users logging in to the system as root. Add below and save and exit
PermitRootLogin yes
Explanation :
The OpenSSH server uses the PermitRootLogin con?guration setting in the /etc/ssh/ sshd_config con?guration ?le to allow or prohibit users logging in to the system as root.
PermitRootLogin yes
With the PermitRootLogin parameter to yes, as it is by default,
The df -h command shows mounted devices and the amount of disk space currently in use on these devices. The -T option helps in recognizing real file systems (as opposed to kernel interfaces) because it shows the file system type as well.
The 'useradd' command is used in RHEL systems to create a new user account with default settings. It is important to note that options like 'adduser' may be used in other Linux distributions, but 'useradd' is standard in RHEL.
It serves as the parent of all directories, hosting essential system files and subdirectories.
Explanation :
The root directory (/) is the topmost directory in the Linux file system hierarchy, containing essential system files and subdirectories. It is the starting point of the directory structure and ensures organized file storage.
The octal value for "rwxr-xr-- " is 754, where 7 represents read, write, and execute permissions for the owner, 5 represents read and execute permissions for the group, and 4 represents read-only permissions for others.
