Session Review

Question 1 (104.3-010 / multiple_choice)

When unmounting a filesystem, what can be supplied to umount?

Status: Unanswered

Your Answer:

Options:

• Only the UUID
• Only the device name
• The device name or the mount point
• Only the filesystem type

Explanation:
The lesson states that umount can be followed by the device name or the mount point [1].

Question 2 (104.3-001 / multiple_choice)

Before a filesystem can be accessed on Linux, what must be done first?

Status: Unanswered

Your Answer:

Options:

• It must be formatted again
• It must be mounted
• It must be copied to /dev
• It must be assigned a hostname

Explanation:
Before a filesystem can be accessed on Linux, it needs to be mounted [1].

Question 3 (104.3-019 / multiple_choice)

What is an equivalent /etc/fstab entry for a systemd mount unit with What=/dev/disk/by-uuid/56C11DCC5D2E1334, Where=/mnt/external, Type=ntfs, Options=defaults?

Status: Unanswered

Your Answer:

Options:

• /dev/disk/by-uuid/56C11DCC5D2E1334 /mnt/external ntfs rw
• UUID=56C11DCC5D2E1334 /mnt/external ntfs defaults
• LABEL=56C11DCC5D2E1334 /mnt/external ntfs defaults
• /mnt/external UUID=56C11DCC5D2E1334 ntfs defaults

Explanation:
The answers to explorational exercises provide this exact equivalent fstab entry [1].

Question 4 (104.3-005 / multiple_choice)

What happens to files already present in a directory while another filesystem is mounted on that directory?

Status: Unanswered

Your Answer:

Options:

• They are deleted permanently
• They are moved to /lost+found
• They become inaccessible by name while the filesystem is mounted
• They are automatically copied into the mounted filesystem

Explanation:
The mounted-on directory need not be empty, but any files in it will be inaccessible by name while the filesystem is mounted [1].

Question 5 (104.3-007 / multiple_choice)

Which mount option passes a comma-separated list of mount options?

Status: Unanswered

Your Answer:

Options:

• -t
• -o
• -a
• -f

Explanation:
The lesson states that -o or --options passes a list of comma-separated mount options [1].

Question 6 (104.3-026 / short_answer)

How can you remount as read-only an already mounted exFAT filesystem with UUID 6e2c12e3-472d-4bac-a257-c49ac07f3761 mounted at /mnt/data?

Status: Unanswered

Your Answer:

Accepted Answer(s):
mount -o remount,ro /mnt/data
mount -o remount,ro UUID=6e2c12e3-472d-4bac-a257-c49ac07f3761
mount -o remount,ro /dev/disk/by-uuid/6e2c12e3-472d-4bac-a257-c49ac07f3761

Explanation:
The lesson states that when remounting, you do not need to specify the filesystem type, only the device name or the mount point, using mount -o remount,ro [1].

Question 7 (104.3-021 / multiple_choice)

Where should a systemd mount unit such as mnt-external.mount be placed?

Status: Unanswered

Your Answer:

Options:

• /usr/lib/systemd/units
• /etc/systemd/system
• /boot/systemd
• /etc/systemd/mounts

Explanation:
The answers to explorational exercises state that the unit should be placed in /etc/systemd/system [1].

Question 8 (104.3-017 / multiple_choice)

What does the fstab option defaults expand to according to the lesson?

Status: Unanswered

Your Answer:

Options:

• rw,suid,dev,exec,auto,nouser,async
• ro,nosuid,nodev,noexec,noauto,user,sync
• rw,nosuid,nodev,noexec,auto,user,async
• rw,suid,nodev,exec,noauto,nouser,sync

Explanation:
The lesson states that defaults passes rw, suid, dev, exec, auto, nouser and async to mount [1].

Question 9 (104.3-029 / command_line)

Enter the command that forcefully unmounts /mnt/server or remounts it read-only if unmounting is not possible.

Status: Unanswered

Your Answer:

Accepted Answer(s):
umount -f -r /mnt/server
umount -fr /mnt/server

Explanation:
The answers to explorational exercises give umount -f -r /mnt/server and note that grouped parameters like umount -fr also work [1].

Question 10 (104.3-003 / multiple_choice)

What is the general syntax for manually mounting a filesystem?

Status: Unanswered

Your Answer:

Options:

• mount DEVICE TYPE MOUNTPOINT
• mount -t TYPE DEVICE MOUNTPOINT
• mount DEVICE on MOUNTPOINT
• mount --device TYPE MOUNTPOINT

Explanation:
The lesson gives the syntax: mount -t TYPE DEVICE MOUNTPOINT [1].