Q1. Which partition holds user home directories?
- A./
- B./home✓ Correct
- C./var
- D./usr
Explanation: /home is the standard mount point for user directories. Learn more.
CompTIA Linux+ Practice Questions: Storage
25 free, exam-style CompTIA Linux+ (XK0-006) practice questions covering Storage, each with the correct answer and an explanation. Start a timed exam below, or scroll on to read through the questions.
Storage practice questions
Answers and explanations are shown. Take the timed exam above to test yourself first.
Q2. What is the purpose of /etc/fstab?
- A.Define filesystems to mount at boot✓ Correct
- B.Store user passwords
- C.Configure firewall rules
- D.List cron jobs
Explanation: fstab contains static filesystem mount information. Learn more.
Q3. Which command creates a LVM physical volume?
- A.pvcreate✓ Correct
- B.vgcreate
- C.lvcreate
- D.mkfs.lvm
Explanation: pvcreate initializes disks/physical partitions for LVM. Learn more.
Q4. What command encrypts a partition with LUKS?
- A.cryptsetup luksFormat✓ Correct
- B.luksCreate
- C.mkfs.luks
- D.encryptfs
Explanation: luksFormat initializes LUKS encryption on a block device. Learn more.
Q5. Which RAID level provides striping with double parity?
- A.RAID 0
- B.RAID 5
- C.RAID 6✓ Correct
- D.RAID 10
Explanation: RAID 6 uses two parity blocks per stripe for fault tolerance. Learn more.
Q6. What command creates a logical volume in LVM?
- A.lvcreate✓ Correct
- B.vgcreate
- C.pvcreate
- D.mkfs.lvm
Explanation: lvcreate creates logical volumes from volume groups. Learn more.
Q7. What command converts a disk to GPT partitioning?
- A.fdisk
- B.parted
- C.gdisk✓ Correct
- D.mkfs.gpt
Explanation: gdisk handles GPT partitioning (fdisk for MBR). Learn more.
Q8. What command displays disk space usage by filesystem?
- A.df✓ Correct
- B.du
- C.free
- D.lsblk
Explanation: df shows mounted filesystems' disk usage. Learn more.
Q9. What command checks filesystem errors?
- A.fsck✓ Correct
- B.chkdsk
- C.diskpart
- D.badblocks
Explanation: fsck checks and repairs Linux filesystems. Learn more.
Q10. Which directory holds temporary mount points?
- A./mnt
- B./media
- C./tmp
- D./run✓ Correct
Explanation: /run contains volatile runtime data including mounts. Learn more.
Q11. Which command shows disk partition table?
- A.fdisk -l
- B.lsblk
- C.parted -l
- D.All of the above✓ Correct
Explanation: All commands display partition information. Learn more.
Q12. What command lists block devices?
- A.lsblk
- B.blkid
- C.fdisk -l
- D.All of the above✓ Correct
Explanation: All commands display block device information. Learn more.
Q13. What does 'dd if=/dev/zero of=/swapfile bs=1M count=2048' do?
- A.Create 2GB swap file✓ Correct
- B.Wipe disk securely
- C.Backup partition table
- D.Test disk speed
Explanation: Creates 2048x1MB blocks = 2GB swap file. Learn more.
Q14. What command repairs XFS filesystems?
- A.xfs_repair✓ Correct
- B.fsck.xfs
- C.xfsadmin --fix
- D.xfs_check
Explanation: xfs_repair checks/repairs XFS filesystems. Learn more.
Q15. What does 'lvconvert --merge' do in LVM?
- A.Merge two logical volumes
- B.Activate a snapshot✓ Correct
- C.Convert linear to striped volume
- D.Repair broken mirror
Explanation: Merges snapshot into origin volume. Learn more.
Q16. Which command creates a GPT partition table?
- A.fdisk
- B.parted
- C.gdisk✓ Correct
- D.cfdisk
Explanation: gdisk handles GPT partitioning. Learn more.
Q17. What is the purpose of 'swapoff -a'?
- A.Disable all swap spaces✓ Correct
- B.Show swap usage
- C.Encrypt swap
- D.Create swap file
Explanation: Disables swap devices/files temporarily. Learn more.
Q18. Which command creates a Btrfs subvolume?
- A.btrfs subvolume create✓ Correct
- B.mkfs.btrfs -S
- C.btrfs volume add
- D.subvolmkfs btrfs
Explanation: Creates new subvolume in Btrfs filesystem. Learn more.
Q19. Which file usually defines persistent filesystem mounts?
- A./etc/fstab✓ Correct
- B./etc/hosts
- C./etc/resolv.conf
- D./etc/shells
Explanation: /etc/fstab contains filesystem mount definitions used during boot and by mount commands. Learn more.
Q20. Which command displays block devices in a tree format?
- A.lsblk✓ Correct
- B.lsmod
- C.lsof -i
- D.lastlog
Explanation: lsblk lists block devices such as disks, partitions, and logical volumes. Learn more.
Q21. Which command shows filesystem disk usage by mounted filesystem?
- A.df -h✓ Correct
- B.du -sh /proc
- C.chmod -R
- D.passwd -l
Explanation: df -h reports available and used space for mounted filesystems. Learn more.
Q22. Which command creates an ext4 filesystem on a partition?
- A.mkfs.ext4 /dev/sdb1✓ Correct
- B.mount.ext4 /dev/sdb1
- C.lsblk.ext4 /dev/sdb1
- D.chmod.ext4 /dev/sdb1
Explanation: mkfs.ext4 formats a block device with an ext4 filesystem. Learn more.
Q23. Which LVM command moves allocated physical extents away from a disk before that disk is removed from a volume group?
- A.pvscan --detach DEVICE
- B.vgchange --migrate DEVICE
- C.pvmove DEVICE✓ Correct
- D.lvconvert --eject DEVICE
Explanation: pvmove relocates allocated extents from one physical volume to other available physical volumes in the same volume group. Learn more.
Q24. Which LVM command extends a logical volume and resizes its filesystem in the same operation?
- A.pvresize -m
- B.lvextend -r✓ Correct
- C.vgchange -s
- D.lvs --growfs
Explanation: The -r option tells lvextend to invoke the appropriate filesystem resize helper after increasing the logical volume. Learn more.
Q25. After extending the underlying logical volume, which command grows a mounted XFS filesystem?
- A.resize2fs MOUNT_POINT
- B.xfs_repair --grow MOUNT_POINT
- C.xfs_growfs MOUNT_POINT✓ Correct
- D.mount --extend MOUNT_POINT
Explanation: xfs_growfs expands an XFS filesystem online and is normally given the filesystem's mount point. Learn more.
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