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CompTIA

XK0-005 · Question #55

What does the command mount -a do?

The correct answer is D. It ensures that all file systems listed with the option auto in /etc/fstab are mounted. The mount -a command reads the /etc/fstab file and attempts to mount all filesystems listed within it that are configured with the auto mount option.

System Management

Question

What does the command mount -a do?

Options

  • AIt ensures that all file systems listed with the option noauto in /etc/fstab are mounted.
  • BIt shows all mounted file systems that have been automatically mounted.
  • CIt opens an editor with root privileges and loads /etc/fstab for editing.
  • DIt ensures that all file systems listed with the option auto in /etc/fstab are mounted.
  • EIt ensures that all file systems listed in /etc/fstab are mounted regardless of their options.

How the community answered

(38 responses)
  • B
    3% (1)
  • C
    3% (1)
  • D
    87% (33)
  • E
    8% (3)

Why each option

The `mount -a` command reads the `/etc/fstab` file and attempts to mount all filesystems listed within it that are configured with the `auto` mount option.

AIt ensures that all file systems listed with the option noauto in /etc/fstab are mounted.

The `noauto` option in `/etc/fstab` explicitly prevents a filesystem from being mounted automatically, including when `mount -a` is executed.

BIt shows all mounted file systems that have been automatically mounted.

To show all mounted filesystems, the `mount` command is used without any arguments, or `findmnt` or `df`. `mount -a` performs an action (mounting), it does not just display information.

CIt opens an editor with root privileges and loads /etc/fstab for editing.

`mount -a` does not open an editor; it's a command for managing filesystem mounts, not for editing configuration files.

DIt ensures that all file systems listed with the option auto in /etc/fstab are mounted.Correct

The `mount -a` command is designed to read the `/etc/fstab` file and automatically mount all filesystems that have the `auto` option specified in their entry, which signifies that they should be mounted at boot or when `mount -a` is run.

EIt ensures that all file systems listed in /etc/fstab are mounted regardless of their options.

`mount -a` does not mount filesystems regardless of their options; it specifically respects the `noauto` option and will skip such entries.

Concept tested: `mount -a` and `/etc/fstab` options

Source: https://man7.org/linux/man-pages/man8/mount.8.html

Topics

#mount command#fstab#File Systems

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