Objective 6.0

Storage Management

LFCS Practice Questions

Use this page to practise Storage Management questions for this certification. Focus on how the exam tests storage management in scenario format — understanding the why behind each answer builds more durable knowledge than memorising options.

Full Practice Test →All Objectives

What this objective tests

LFCS Storage Management — Key Topics

Storage Management questions on this certification test your ability to deploy and manage storage management concepts in scenario-based situations.

Core Storage Management concepts and how they apply in real-world cloud scenarios.
How to deploy storage management correctly and verify the outcome.
Troubleshooting storage management issues by interpreting error output and system state.
Cloud best practices and Storage Management design trade-offs tested by this certification.

Common exam traps

Where candidates lose marks on Storage Management

⚠Selecting the most expensive service when a simpler managed option meets the requirement.
⚠Forgetting that cloud resources must be explicitly secured — defaults are rarely secure.
⚠Choosing a global service fix when the issue is region-specific.
⚠Overlooking cost implications of cross-region data transfer in architecture questions.

LFCS Storage Management — Practice Questions

30 questions from this objective

Question 2mediummultiple choice

Full question →

A system administrator is tasked with setting up a new 2TB disk for a database server. The database requires high read/write performance and redundancy. The server has a hardware RAID controller, but the administrator wants to use Linux software RAID for flexibility. Which of the following RAID levels should the administrator choose to maximize performance while providing fault tolerance, assuming the disk will be part of a larger array in the future?

Question 3easymultiple choice

Full question →

An administrator wants to extend a logical volume named 'lv_data' in volume group 'vg_data' by 5GB. The volume group has free physical extents. Which command should be used?

Question 4hardmultiple choice

Full question →

A storage administrator notices that a newly created XFS filesystem on a logical volume shows only 90% of the expected capacity. The logical volume is 100GB. What is the most likely cause?

Question 5easymultiple choice

Full question →

Which command can be used to display the UUID of a filesystem on /dev/sdb1?

Question 6mediummultiple choice

Full question →

An administrator needs to mount an XFS filesystem with options to optimize for a database workload. Which mount option would reduce metadata updates to improve performance?

Question 7mediummulti select

Full question →

Which TWO commands can be used to create a new physical volume for use with LVM? (Choose two.)

Question 8hardmulti select

Full question →

Which THREE are valid reasons to use a swap file instead of a swap partition? (Choose three.)

Question 9hardmultiple choice

Full question →

You are a Linux administrator at a mid-sized company. The company runs a critical PostgreSQL database on a server running CentOS 7. The database stores its data on a 500GB logical volume (lv_pgdata) in volume group vg_pg. The filesystem is XFS. Recently, the database team reports that write performance is degrading, and the disk is nearly full (95% usage). You have added a new 200GB SSD to the server, and you need to increase the storage capacity and improve write performance for the database. The database can tolerate a brief downtime (less than 5 minutes) for maintenance. You want to use LVM to add the new SSD as a physical volume, extend the volume group, and then extend the logical volume and filesystem. Additionally, you want to improve write performance by placing the frequently written database transaction log on a separate faster storage. However, the database configuration expects the transaction log to be in a subdirectory of the data directory. You have the following options: A. Create a new logical volume for the transaction log, format it as XFS, mount it on the data directory's subdirectory, and move the log files. B. Add the SSD as a PV, extend vg_pg, extend lv_pgdata, and then use LVM's pvmove to move all extents to the SSD. C. Add the SSD as a PV, create a new VG, create a new LV for the transaction log, format as ext4, mount, and reconfigure the database. D. Use LVM's striping (RAID 0) across the existing HDD and new SSD to improve performance, then extend the filesystem. Which option best meets the requirements of increasing capacity and improving write performance with minimal downtime?

Question 10mediummultiple choice

Full question →

A system administrator notices that a new 500GB SSD (/dev/sdb) is not being recognized by the system after installation. The server uses UEFI and GPT partitioning. Which command should the administrator run first to verify that the disk is detected by the kernel?

Question 11hardmultiple choice

Full question →

A Linux administrator needs to create a RAID 5 array using three disks: /dev/sdb, /dev/sdc, and /dev/sdd, each 2TB. The administrator wants to ensure the array can be reassembled automatically after a reboot. Which command should be used to create the array?

Question 12easymulti select

Full question →

Which TWO commands can be used to mount a filesystem on /dev/sdb1 to /mnt/data?

Question 13mediummulti select

Full question →

Which THREE of the following are valid Linux filesystem types that can be used for root partitions on a modern Linux system?

Question 14mediummultiple choice

Full question →

After extending the logical volume, the df output still shows 100G. What is the most likely reason?

Exhibit

Refer to the exhibit.

# df -h /data
Filesystem      Size  Used Avail Use% Mounted on
/dev/mapper/vg_data-lv_data  100G   50G   50G  50% /data

# lvextend -L +10G /dev/mapper/vg_data-lv_data
  Size of logical volume vg_data/lv_data changed from 100.00 GiB to 110.00 GiB.
  Logical volume vg_data/lv_data successfully resized.

# df -h /data
Filesystem      Size  Used Avail Use% Mounted on
/dev/mapper/vg_data-lv_data  100G   50G   50G  50% /data

Question 15easymultiple choice

Full question →

A system administrator receives an alert that disk /dev/sda is predicted to fail soon. The server uses LVM, and /dev/sda is part of a volume group named vg_system. Which of the following is the best course of action to replace the failing disk without downtime?

Question 16hardmultiple choice

Full question →

The administrator wants to create a new logical volume of 5GB for /var/log. Which of the following is the most appropriate first step?

Network Topology

Question 17hardmultiple choice

Full question →

Your company runs a critical database server that uses a 2TB XFS filesystem mounted at /data. The filesystem resides on an LVM logical volume (lv_data) within a volume group (vg_data) that spans four physical volumes (each 600GB SSD). You have been receiving low-space alerts: /data is at 95% capacity. After reviewing usage, you determine that the database will need an additional 500GB within the next month. The server has no additional physical disks available, but there is an unused 1TB SSD in inventory that you can install. However, the server is in production and cannot be rebooted. The system uses a 5.10 Linux kernel. Which of the following is the best approach to increase the available space for /data?

Question 18mediummultiple choice

Full question →

A system administrator needs to create a new ext4 filesystem on /dev/sdb1 with a reserved block percentage of 2% instead of the default 5%. Which command should be used?

Question 19hardmulti select

Full question →

Which THREE of the following are valid methods to mount an NFS filesystem on a client?

Question 20easymultiple choice

Full question →

Refer to the exhibit. The administrator wants to create a RAID 1 array using /dev/sdb1 and /dev/sdc1. Which command should be used?

Exhibit

Refer to the exhibit.

# lsblk
NAME   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda      8:0    0   20G  0 disk
├─sda1   8:1    0    1G  0 part /boot
├─sda2   8:2    0   10G  0 part /
└─sda3   8:3    0    9G  0 part [SWAP]
sdb      8:16   0   10G  0 disk
└─sdb1   8:17   0   10G  0 part
sdc      8:32   0    5G  0 disk
└─sdc1   8:33   0    5G  0 part /data

Question 21mediumdrag order

Full question →

Order the steps to configure a cron job that runs a script every day at 2 AM.

Drag steps to the numbered slots on the right, or tap a step then tap a slot.

Steps

Order

1Step 1

2Step 2

3Step 3

4Step 4

5Step 5

Question 22mediummatching

Full question →

Match each Linux package management command to its distribution.

Drag a concept onto its matching description — or click a concept then click the description.

Concepts

Matches

Debian/Ubuntu

RHEL/CentOS 7

Fedora/RHEL 8+

openSUSE

Arch Linux

Question 23easymultiple choice

Full question →

A Linux administrator needs to view the UUID and filesystem type of all block devices. Which command provides this information?

Question 24easymultiple choice

Full question →

An administrator wants to see the disk usage of the /var directory in a human-readable format. Which command should be used?

Question 25easymultiple choice

Full question →

A system administrator needs to partition a new 2TB disk using GPT. Which tool should be used?

Question 26mediummultiple choice

Full question →

An administrator has created an LVM thin pool. Which command should be used to create a thin logical volume named 'thinvol' of size 100GB from the thin pool 'pool1' in volume group 'vg1'?

Question 27mediummultiple choice

Full question →

An administrator needs to configure software RAID 5 on three disks /dev/sda, /dev/sdb, /dev/sdc with a spare disk /dev/sdd. Which command correctly creates the RAID array?

Question 28mediummultiple choice

Full question →

An administrator needs to set the reserved block percentage on an ext4 filesystem to 1% for a non-root filesystem. Which command accomplishes this?

Question 29hardmultiple choice

Full question →

An admin notices a PV in a VG has failed. The VG is still accessible with redundancy. Which command sequence should be used to replace the faulty PV with a new one (/dev/sde) while the VG is active and without data loss?

Question 30hardmultiple choice

Full question →

An administrator receives an alert that the /var/log partition is 95% full. The partition is an LVM logical volume. The volume group has available free extents. Which of the following is the most efficient method to increase the size of the filesystem to 120GB (from current 100GB) without unmounting it?

Question 31hardmultiple choice

Full question →

A storage administrator wants to create a software RAID 10 (1+0) array using six disks. Which mdadm command is appropriate?

More Storage Management questions available in the full practice test.

Continue Practising →

All LFCS Objectives

Objective 6.0

Storage Management

LFCS Practice Questions

Full Practice Test →All Objectives

What this objective tests

LFCS Storage Management — Key Topics

Storage Management questions on this certification test your ability to deploy and manage storage management concepts in scenario-based situations.

Core Storage Management concepts and how they apply in real-world cloud scenarios.
How to deploy storage management correctly and verify the outcome.
Troubleshooting storage management issues by interpreting error output and system state.
Cloud best practices and Storage Management design trade-offs tested by this certification.

Common exam traps

Where candidates lose marks on Storage Management

⚠Selecting the most expensive service when a simpler managed option meets the requirement.
⚠Forgetting that cloud resources must be explicitly secured — defaults are rarely secure.
⚠Choosing a global service fix when the issue is region-specific.
⚠Overlooking cost implications of cross-region data transfer in architecture questions.

LFCS Storage Management — Practice Questions

30 questions from this objective

Question 2mediummultiple choice

Full question →

A system administrator is tasked with setting up a new 2TB disk for a database server. The database requires high read/write performance and redundancy. The server has a hardware RAID controller, but the administrator wants to use Linux software RAID for flexibility. Which of the following RAID levels should the administrator choose to maximize performance while providing fault tolerance, assuming the disk will be part of a larger array in the future?

Question 3easymultiple choice

Full question →

An administrator wants to extend a logical volume named 'lv_data' in volume group 'vg_data' by 5GB. The volume group has free physical extents. Which command should be used?

Question 4hardmultiple choice

Full question →

A storage administrator notices that a newly created XFS filesystem on a logical volume shows only 90% of the expected capacity. The logical volume is 100GB. What is the most likely cause?

Question 5easymultiple choice

Full question →

Which command can be used to display the UUID of a filesystem on /dev/sdb1?

Question 6mediummultiple choice

Full question →

An administrator needs to mount an XFS filesystem with options to optimize for a database workload. Which mount option would reduce metadata updates to improve performance?

Question 7mediummulti select

Full question →

Which TWO commands can be used to create a new physical volume for use with LVM? (Choose two.)

Question 8hardmulti select

Full question →

Which THREE are valid reasons to use a swap file instead of a swap partition? (Choose three.)

Question 9hardmultiple choice

Full question →

You are a Linux administrator at a mid-sized company. The company runs a critical PostgreSQL database on a server running CentOS 7. The database stores its data on a 500GB logical volume (lv_pgdata) in volume group vg_pg. The filesystem is XFS. Recently, the database team reports that write performance is degrading, and the disk is nearly full (95% usage). You have added a new 200GB SSD to the server, and you need to increase the storage capacity and improve write performance for the database. The database can tolerate a brief downtime (less than 5 minutes) for maintenance. You want to use LVM to add the new SSD as a physical volume, extend the volume group, and then extend the logical volume and filesystem. Additionally, you want to improve write performance by placing the frequently written database transaction log on a separate faster storage. However, the database configuration expects the transaction log to be in a subdirectory of the data directory. You have the following options: A. Create a new logical volume for the transaction log, format it as XFS, mount it on the data directory's subdirectory, and move the log files. B. Add the SSD as a PV, extend vg_pg, extend lv_pgdata, and then use LVM's pvmove to move all extents to the SSD. C. Add the SSD as a PV, create a new VG, create a new LV for the transaction log, format as ext4, mount, and reconfigure the database. D. Use LVM's striping (RAID 0) across the existing HDD and new SSD to improve performance, then extend the filesystem. Which option best meets the requirements of increasing capacity and improving write performance with minimal downtime?

Question 10mediummultiple choice

Full question →

A system administrator notices that a new 500GB SSD (/dev/sdb) is not being recognized by the system after installation. The server uses UEFI and GPT partitioning. Which command should the administrator run first to verify that the disk is detected by the kernel?

Question 11hardmultiple choice

Full question →

A Linux administrator needs to create a RAID 5 array using three disks: /dev/sdb, /dev/sdc, and /dev/sdd, each 2TB. The administrator wants to ensure the array can be reassembled automatically after a reboot. Which command should be used to create the array?

Question 12easymulti select

Full question →

Which TWO commands can be used to mount a filesystem on /dev/sdb1 to /mnt/data?

Question 13mediummulti select

Full question →

Which THREE of the following are valid Linux filesystem types that can be used for root partitions on a modern Linux system?

Question 14mediummultiple choice

Full question →

After extending the logical volume, the df output still shows 100G. What is the most likely reason?

Exhibit

Refer to the exhibit.

# df -h /data
Filesystem      Size  Used Avail Use% Mounted on
/dev/mapper/vg_data-lv_data  100G   50G   50G  50% /data

# lvextend -L +10G /dev/mapper/vg_data-lv_data
  Size of logical volume vg_data/lv_data changed from 100.00 GiB to 110.00 GiB.
  Logical volume vg_data/lv_data successfully resized.

# df -h /data
Filesystem      Size  Used Avail Use% Mounted on
/dev/mapper/vg_data-lv_data  100G   50G   50G  50% /data

Question 15easymultiple choice

Full question →

A system administrator receives an alert that disk /dev/sda is predicted to fail soon. The server uses LVM, and /dev/sda is part of a volume group named vg_system. Which of the following is the best course of action to replace the failing disk without downtime?

Question 16hardmultiple choice

Full question →

The administrator wants to create a new logical volume of 5GB for /var/log. Which of the following is the most appropriate first step?

Network Topology

Question 17hardmultiple choice

Full question →

Your company runs a critical database server that uses a 2TB XFS filesystem mounted at /data. The filesystem resides on an LVM logical volume (lv_data) within a volume group (vg_data) that spans four physical volumes (each 600GB SSD). You have been receiving low-space alerts: /data is at 95% capacity. After reviewing usage, you determine that the database will need an additional 500GB within the next month. The server has no additional physical disks available, but there is an unused 1TB SSD in inventory that you can install. However, the server is in production and cannot be rebooted. The system uses a 5.10 Linux kernel. Which of the following is the best approach to increase the available space for /data?

Question 18mediummultiple choice

Full question →

A system administrator needs to create a new ext4 filesystem on /dev/sdb1 with a reserved block percentage of 2% instead of the default 5%. Which command should be used?

Question 19hardmulti select

Full question →

Which THREE of the following are valid methods to mount an NFS filesystem on a client?

Question 20easymultiple choice

Full question →

Refer to the exhibit. The administrator wants to create a RAID 1 array using /dev/sdb1 and /dev/sdc1. Which command should be used?

Exhibit

Refer to the exhibit.

# lsblk
NAME   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda      8:0    0   20G  0 disk
├─sda1   8:1    0    1G  0 part /boot
├─sda2   8:2    0   10G  0 part /
└─sda3   8:3    0    9G  0 part [SWAP]
sdb      8:16   0   10G  0 disk
└─sdb1   8:17   0   10G  0 part
sdc      8:32   0    5G  0 disk
└─sdc1   8:33   0    5G  0 part /data

Question 21mediumdrag order

Full question →

Order the steps to configure a cron job that runs a script every day at 2 AM.

Drag steps to the numbered slots on the right, or tap a step then tap a slot.

Steps

Order

1Step 1

2Step 2

3Step 3

4Step 4

5Step 5

Question 22mediummatching

Full question →

Match each Linux package management command to its distribution.

Drag a concept onto its matching description — or click a concept then click the description.

Concepts

Matches

Debian/Ubuntu

RHEL/CentOS 7

Fedora/RHEL 8+

openSUSE

Arch Linux

Question 23easymultiple choice

Full question →

A Linux administrator needs to view the UUID and filesystem type of all block devices. Which command provides this information?

Question 24easymultiple choice

Full question →

An administrator wants to see the disk usage of the /var directory in a human-readable format. Which command should be used?

Question 25easymultiple choice

Full question →

A system administrator needs to partition a new 2TB disk using GPT. Which tool should be used?

Question 26mediummultiple choice

Full question →

An administrator has created an LVM thin pool. Which command should be used to create a thin logical volume named 'thinvol' of size 100GB from the thin pool 'pool1' in volume group 'vg1'?

Question 27mediummultiple choice

Full question →

An administrator needs to configure software RAID 5 on three disks /dev/sda, /dev/sdb, /dev/sdc with a spare disk /dev/sdd. Which command correctly creates the RAID array?

Question 28mediummultiple choice

Full question →

An administrator needs to set the reserved block percentage on an ext4 filesystem to 1% for a non-root filesystem. Which command accomplishes this?

Question 29hardmultiple choice

Full question →

An admin notices a PV in a VG has failed. The VG is still accessible with redundancy. Which command sequence should be used to replace the faulty PV with a new one (/dev/sde) while the VG is active and without data loss?

Question 30hardmultiple choice

Full question →

An administrator receives an alert that the /var/log partition is 95% full. The partition is an LVM logical volume. The volume group has available free extents. Which of the following is the most efficient method to increase the size of the filesystem to 120GB (from current 100GB) without unmounting it?

Question 31hardmultiple choice

Full question →

A storage administrator wants to create a software RAID 10 (1+0) array using six disks. Which mdadm command is appropriate?

More Storage Management questions available in the full practice test.

Continue Practising →