Linux OS Features & Tools

What is the Linux command line text editor

nano

What is a plain-text system file that contains essential information about user accounts in Linux

/etc/passwd

What Linux system file is used to store encrypted password hashes and additional password-related settings

/etc/shadow

What is the Linux system file used for local hostname to IP address resolution

/etc/hosts

What Linux system file is a filesystem table that lists storage devices as partitions, along with their mount points and options, allowing the system to mount them automatically at boot

/etc/fstab

What is the Linux system file that specifies the IP addresses of the DNS servers that the system will use to resolve domain names to IP addresses

/etc/resolv.conf

What is the Linux system and service manager that handles the boot process and manages system resources

systemd

What core component of Linux manages the system’s hardware resources and acts as an interface between applications and hardware

Kernel

What Linux component is responsible for loading the OS kernel into memory during the system startup process

Bootloader

What user account in Linux has unrestricted access to all system files, commands, and administrative functions

Root

What does an ‘x’ in /etc/paswd mean

The user’s password hash is stored in /etc/shadow

What is the main functional difference between the nount command and the /etc/fstab file

Mount creates temporary mounts; /etc/fstab defines mounts that persist across reboots