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CCNA Storage Devices Questions

30 questions · Storage Devices · All types, answers revealed

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1
MCQeasy

A technician is configuring a new workstation for video editing. The user needs fast read/write speeds for large project files. Which storage technology should be selected for the primary drive?

A.2.5-inch SATA SSD
B.NVMe M.2 SSD
C.10,000 RPM HDD
D.Hybrid drive (SSHD)
AnswerB

NVMe SSDs provide the highest throughput and low latency, perfect for large file transfers in video editing.

Why this answer

An NVMe M.2 SSD uses the PCIe interface, offering significantly faster speeds than SATA SSDs or HDDs, ideal for video editing. SATA SSDs are slower, and HDDs are too slow for this workload.

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2
MCQhard

A technician is troubleshooting a desktop that will not boot from a brand new M.2 NVMe SSD. The drive is detected in the BIOS/UEFI, but the system skips it and tries to boot from other devices. The technician has already verified that the drive is properly seated and the BIOS is up to date. What should the technician check next?

A.Check if the SATA controller is set to AHCI mode.
B.Check if the boot mode is set to UEFI and the drive is partitioned with GPT.
C.Check if the M.2 slot is configured to use SATA or PCIe lanes in the BIOS.
D.Check if the drive has been initialized with a Master Boot Record (MBR).
AnswerB

NVMe drives require UEFI boot mode and a GPT partition table. If the system is in legacy BIOS (CSM) mode or the drive is MBR, the system will detect the drive but not boot from it.

Why this answer

This question tests advanced knowledge of UEFI boot settings. When an NVMe drive is detected but not bootable, the issue is often that the drive is not partitioned with a GUID Partition Table (GPT) or that the system is in legacy BIOS (CSM) mode. NVMe drives require UEFI boot mode and a GPT partition table to boot.

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3
MCQhard

A technician is configuring a workstation for a graphic designer who needs to work with large 4K video files. The motherboard supports SATA III and has one M.2 slot. Which storage configuration will provide the best performance for this workload?

A.One SATA III SSD for the OS and one SATA III HDD for media files.
B.One NVMe M.2 SSD for both the OS and media files.
C.Two SATA III SSDs in RAID 0.
D.One SATA III SSD for the OS and one NVMe M.2 SSD for media files.
AnswerB

An NVMe SSD provides the fastest speeds available, handling both OS and large media files efficiently.

Why this answer

This question tests understanding of storage interface speeds. NVMe M.2 SSDs offer significantly higher sequential read/write speeds (up to 3500 MB/s) compared to SATA III (up to 550 MB/s), making them ideal for large file editing.

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4
MCQmedium

A technician is setting up a new RAID 0 array with two 500 GB SSDs for a gaming PC. After installation, the system shows only 500 GB of usable space. What is the most likely cause?

A.One of the SSDs is not detected by the system.
B.The RAID controller is set to RAID 1 instead of RAID 0.
C.The SSDs are different brands and incompatible.
D.The operating system does not support RAID 0.
AnswerB

RAID 1 mirrors data, resulting in usable capacity equal to one drive (500 GB), not the combined 1 TB of RAID 0.

Why this answer

RAID 0 stripes data across both drives, providing combined capacity (1 TB). If only 500 GB is shown, the array may be configured as RAID 1 (mirroring) or not properly set up. The drives themselves are unlikely to be faulty.

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5
MCQeasy

A user wants to upgrade their laptop from a traditional HDD to an SSD for faster boot times. They have a SATA III interface available. Which type of SSD should you recommend for the best performance without requiring an adapter?

A.NVMe M.2 SSD
B.2.5-inch SATA SSD
C.mSATA SSD
D.External USB SSD
AnswerB

This form factor matches the laptop's existing HDD bay and uses the SATA III interface, providing a simple upgrade.

Why this answer

A 2.5-inch SATA SSD is the direct replacement for a laptop HDD, using the same interface and form factor. NVMe M.2 drives require an M.2 slot, which this laptop may not have. mSATA is less common and not standard in most laptops.

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6
MCQeasy

A user reports that their computer's hard drive makes a clicking noise and the system occasionally freezes. Which action should you take first?

A.Run CHKDSK to repair file system errors.
B.Replace the hard drive immediately.
C.Back up the user's data as soon as possible.
D.Update the hard drive firmware.
AnswerC

The clicking noise suggests imminent drive failure; backing up data is the critical first step.

Why this answer

Clicking noises from a hard drive often indicate mechanical failure (head crash). Immediate backup of critical data is the priority before further troubleshooting or replacement.

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7
MCQmedium

A technician is building a high-performance workstation for video editing. The user needs fast read/write speeds for large 4K video files and wants the OS and applications on the same drive. The motherboard has one M.2 slot (PCIe 4.0 x4) and four SATA III ports. Which storage configuration should the technician recommend?

A.Install one SATA III SSD for the OS and one SATA III HDD for video files.
B.Install one M.2 NVMe PCIe 4.0 SSD for both OS and video files.
C.Install two SATA III SSDs in a RAID 0 array for the OS and video files.
D.Install one M.2 SATA SSD for the OS and one SATA III HDD for video files.
AnswerB

A single high-capacity M.2 NVMe PCIe 4.0 SSD provides extremely fast read/write speeds (over 5,000 MB/s), ideal for 4K video editing. It uses the available M.2 slot and meets the user's need for fast performance.

Why this answer

This question tests understanding of NVMe versus SATA performance. For video editing, extremely fast sequential read/write speeds are critical. An M.2 NVMe PCIe 4.0 drive offers speeds up to 7,000 MB/s, far exceeding SATA SSDs (about 550 MB/s).

The correct answer is to use the M.2 slot for a single fast drive.

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8
MCQhard

A user complains that their computer with a 256 GB NVMe SSD is running out of storage space. They want to add more internal storage but only have one M.2 slot. What is the best solution to expand capacity without sacrificing performance?

A.Replace the NVMe SSD with a larger capacity NVMe SSD.
B.Install a SATA SSD in an available 2.5-inch drive bay.
C.Use an external USB SSD for additional storage.
D.Add a second M.2 drive using a PCIe adapter card.
AnswerA

This uses the single M.2 slot to upgrade capacity while keeping the fastest storage option.

Why this answer

Replacing the existing NVMe SSD with a larger capacity model is the most direct way to increase internal storage while maintaining NVMe performance. Adding a SATA SSD via a 2.5-inch bay is also viable but slower. External drives are not internal.

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9
MCQeasy

A customer reports that their desktop PC with a 1 TB HDD is running very slowly, especially when opening large files. They mention that the drive light is constantly active even when the system is idle. What is the most likely cause of this performance issue?

A.The CPU is overheating and throttling performance.
B.The hard disk drive is failing and has developed bad sectors.
C.The system has a virus that is encrypting files in the background.
D.The RAM is insufficient and the system is using the hard drive as virtual memory.
AnswerB

A failing HDD with bad sectors causes the drive to repeatedly attempt reads/writes, leading to constant activity and slow performance.

Why this answer

A failing HDD often causes constant drive activity and slow file access due to bad sectors or mechanical wear. This is a common symptom that technicians should recognize before data loss occurs. SSDs or other components do not typically exhibit this behavior.

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10
MCQmedium

A client wants to add a second internal hard drive to their desktop for additional storage, but all SATA ports on the motherboard are already used. What is the best solution?

A.Use a USB-to-SATA adapter and connect the drive externally.
B.Install a SATA expansion card into an available PCIe slot.
C.Replace the motherboard with one that has more SATA ports.
D.Use an external hard drive enclosure connected via USB.
AnswerB

This adds additional SATA ports internally, allowing the new drive to be installed inside the case.

Why this answer

An eSATA or SATA expansion card adds more SATA ports via a PCIe slot. USB adapters are slower, and replacing the motherboard is unnecessary. External enclosures are not internal.

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11
MCQeasy

A customer reports that their external USB hard drive is not recognized when plugged into the front USB ports of their desktop, but it works fine on the back ports. What is the most likely cause?

A.The USB cable is too short.
B.The front USB ports are not connected to the motherboard.
C.The front USB ports do not supply enough power.
D.The hard drive is formatted with the wrong file system.
AnswerC

Front USB ports may share a single header and provide less power than rear ports, which can cause high-power devices to fail.

Why this answer

This question tests knowledge of USB port power delivery and cable length limitations. Front USB ports often share a single internal header and may deliver less power than rear ports directly on the motherboard, causing high-power devices like external hard drives to fail.

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12
MCQmedium

A user reports that their laptop's 1TB hard drive is making a clicking sound and the system is running very slowly. The technician runs a diagnostic and finds multiple bad sectors. What should the technician do first?

A.Run a surface scan to mark bad sectors and continue using the drive.
B.Replace the hard drive immediately and reinstall the operating system.
C.Back up all important data to an external drive or cloud storage.
D.Update the hard drive firmware to fix the clicking noise.
AnswerC

Given the clicking sound and bad sectors, the drive is likely to fail soon. The first step is to preserve the user's data by backing it up. After that, the drive should be replaced.

Why this answer

This question tests understanding of hard drive failure symptoms and proper troubleshooting steps. A clicking sound (often called the 'click of death') and bad sectors indicate imminent mechanical failure. The priority is to back up data immediately before the drive fails completely.

Replacing the drive is necessary, but data backup comes first.

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13
MCQhard

A technician is configuring a RAID array in a server that requires both high performance and fault tolerance. The server has four identical 2TB SATA HDDs. The RAID controller supports RAID 0, 1, 5, and 10. Which RAID level should the technician choose to meet both requirements?

A.RAID 0
B.RAID 1
C.RAID 5
D.RAID 10
AnswerD

RAID 10 combines striping and mirroring, offering both high performance and fault tolerance. With four drives, it creates two mirrored pairs striped together, allowing up to two drive failures (one per mirror) without data loss.

Why this answer

This question tests understanding of RAID levels and their trade-offs. RAID 10 (striping + mirroring) provides both performance (striping) and fault tolerance (mirroring), but requires at least 4 drives. RAID 5 offers fault tolerance with parity but has slower write performance.

RAID 0 has no fault tolerance, and RAID 1 only provides fault tolerance with no performance gain.

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14
MCQhard

A technician is troubleshooting a server that uses a RAID 5 array with three 2 TB HDDs. The array reports 4 TB of usable space. One drive fails. What is the immediate impact on data availability?

A.All data is lost because RAID 5 cannot handle any drive failures.
B.The array continues to function, but performance may decrease until the drive is replaced.
C.The usable capacity drops to 2 TB until the drive is replaced.
D.The array automatically switches to RAID 0 to maintain performance.
AnswerB

With one failed drive, the array is in a degraded state but still accessible; performance may drop due to parity calculations.

Why this answer

RAID 5 can tolerate one drive failure without data loss because parity data is distributed across all drives. The array will continue to operate in a degraded state until the failed drive is replaced and rebuilt. A second failure would cause data loss.

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15
MCQmedium

During a hardware installation, you are tasked with setting up a RAID 1 array in a server using two identical 4 TB HDDs. After configuration, the total usable capacity is only 4 TB. Is this expected behavior?

A.No, the array should show 8 TB because the drives are identical.
B.Yes, RAID 1 provides fault tolerance by mirroring data, so usable capacity is 4 TB.
C.No, the array should be configured as RAID 0 to get 8 TB.
D.Yes, but only if the drives are set as JBOD.
AnswerB

RAID 1 writes identical data to both drives, so the total storage is limited to the smallest drive's capacity.

Why this answer

RAID 1 mirrors data across two drives, so usable capacity equals the size of one drive (4 TB). This provides redundancy, not increased storage. RAID 0 would combine capacity, and RAID 5 requires at least three drives.

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16
MCQmedium

A user wants to add a second hard drive to their desktop for extra storage, but the computer only has one SATA data cable available. The technician has an extra SATA power cable from the power supply. What is the most practical solution?

A.Use a Y-splitter on the existing SATA data cable to connect both drives.
B.Purchase an additional SATA data cable and use the existing power cable.
C.Connect the second drive using an external USB-to-SATA adapter.
D.Replace the existing hard drive with a larger one.
AnswerB

The technician has an extra power cable, so they only need a SATA data cable to connect the second drive.

Why this answer

This question tests understanding of SATA connectivity requirements. Each SATA drive needs its own data cable, but power can be shared via splitters or by using available power connectors.

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17
MCQmedium

A technician is installing a new M.2 NVMe SSD into a desktop motherboard that has two M.2 slots. After installation, the system boots but the new drive is not detected in the BIOS. What should the technician check first?

A.Update the SSD firmware.
B.Check if the M.2 slot supports NVMe or only SATA.
C.Replace the SSD with a different brand.
D.Disable Secure Boot in the BIOS.
AnswerB

Some M.2 slots are SATA-only; if the technician installed an NVMe drive in such a slot, it will not be detected.

Why this answer

This question tests knowledge of M.2 slot configurations. Some M.2 slots share bandwidth with SATA ports or PCIe lanes, and the motherboard manual specifies which slot supports NVMe.

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18
MCQmedium

A customer reports that their external USB 3.0 hard drive is only achieving transfer speeds of about 35 MB/s, far below the expected 5 Gbps. The drive is connected to a USB 3.0 port on the front of the computer case. What is the most likely cause of this performance issue?

A.The drive is formatted with FAT32 instead of NTFS.
B.The front-panel USB port is internally connected to a USB 2.0 header on the motherboard.
C.The hard drive is failing and needs to be replaced.
D.The USB 3.0 driver is not installed in the operating system.
AnswerB

This is the most likely cause because connecting a USB 3.0 device to a USB 2.0 header forces the device to operate at USB 2.0 speeds (480 Mbps, roughly 35-40 MB/s).

Why this answer

This question tests understanding of USB standards and cable/connector compatibility. USB 3.0 (5 Gbps) requires a cable with 9 pins, but if the case's front-panel header or cable is wired for USB 2.0 only (4 pins), the device will fall back to USB 2.0 speeds (480 Mbps, ~35 MB/s). The correct answer is that the front-panel USB port is internally connected to a USB 2.0 header.

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19
MCQhard

A technician is troubleshooting a desktop that has a 256GB SATA SSD (C:) and a 1TB SATA HDD (D:). The user reports that the system is running very slowly, and the C: drive is nearly full. The technician runs a disk cleanup and removes temporary files, but the C: drive still has only 5GB free. What should the technician do to resolve the performance issue without replacing the SSD?

A.Enable write caching on the SSD in Device Manager.
B.Move the user's Documents, Pictures, and other personal folders to the D: drive.
C.Defragment the C: drive to consolidate free space.
D.Disable the page file on the C: drive.
AnswerB

Moving personal folders to the D: drive frees up significant space on the C: drive. This allows the SSD to have more free space for wear leveling and garbage collection, restoring performance.

Why this answer

This question tests understanding of SSD performance degradation due to low free space. SSDs need free space for wear leveling and garbage collection. When an SSD is nearly full, performance drops significantly.

The best solution is to move user data and large files to the D: drive to free up space on the C: drive.

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20
MCQhard

A user reports that their computer with a 256GB SSD and a 1TB HDD is running out of space on the C: drive (SSD). The user wants to move the 'Users' folder to the HDD to free space. What is the best method to accomplish this without data loss?

A.Cut and paste the Users folder to the HDD, then create a shortcut on the SSD.
B.Use the 'Location' tab in the Users folder properties to change the target path to the HDD.
C.Format the HDD as a dynamic disk and extend the C: partition onto it.
D.Delete the pagefile on the SSD to free space.
AnswerB

Windows allows redirecting user folders like Documents, Music, etc., via the Location tab, which safely moves data and updates paths.

Why this answer

This question tests advanced storage management skills. Moving system folders like 'Users' requires using symbolic links (junctions) or the built-in 'Location' tab in folder properties to redirect the path without breaking system functionality.

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21
MCQeasy

A user wants to upgrade their laptop from a 500GB 5400 RPM HDD to a faster storage solution without increasing power consumption. Which drive type should you recommend?

A.Another 5400 RPM HDD with a larger cache
B.A 10,000 RPM HDD
C.A SATA solid-state drive (SSD)
D.An external USB flash drive
AnswerC

An SSD provides significantly faster read/write speeds and lower power consumption compared to any HDD, making it the best choice.

Why this answer

This question assesses understanding of storage drive characteristics. SSDs are faster, more durable, and consume less power than HDDs, making them ideal for laptop upgrades.

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22
MCQmedium

A user complains that their external hard drive is not showing up in File Explorer, but it appears in Device Manager as a connected device. What is the most likely issue?

A.The USB port is faulty.
B.The drive needs a new driver.
C.The drive does not have a drive letter assigned.
D.The file system is corrupted.
AnswerC

A missing drive letter is a common issue; it can be resolved by assigning one in Disk Management.

Why this answer

This question tests troubleshooting storage recognition issues. When a device appears in Device Manager but not File Explorer, it often means the drive lacks a drive letter or has a partition issue.

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23
MCQeasy

A customer complains that their external USB hard drive is not recognized when plugged into any port on their laptop. The drive spins up and its LED lights up. The drive works fine on another computer. What is the most likely issue?

A.The USB port is physically damaged.
B.The external drive's enclosure has a faulty controller board.
C.The laptop is missing or has corrupted USB mass storage drivers.
D.The USB cable is defective.
AnswerC

If the USB mass storage driver is missing or corrupted, the laptop will provide power to the device but will not be able to enumerate it, so it will not appear in the OS. This explains why the drive spins up but is not recognized.

Why this answer

This question tests basic USB troubleshooting. The drive spins up and lights up, indicating power is reaching it, but it is not recognized. This often points to a driver issue on the laptop.

The other options are less likely because the drive works on another computer and the LED is on.

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24
MCQmedium

A user reports that their computer will not boot and displays an 'Operating System Not Found' error. They recently installed a new SATA SSD and connected it to the motherboard. What is the most likely cause?

A.The SATA cable is faulty.
B.The SSD is not compatible with the motherboard.
C.The boot order in BIOS is not set to the new SSD.
D.The SSD needs to be formatted before use.
AnswerC

If the system tries to boot from an old drive or network, it will fail if the OS is only on the new SSD.

Why this answer

If the boot order is not set to the new SSD, the system may try to boot from another drive or nothing, causing the error. The SSD itself is likely fine, and cables are usually detected if properly connected.

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25
MCQmedium

A customer complains that their external USB 3.0 hard drive is only transferring files at USB 2.0 speeds (about 30-40 MB/s). They have confirmed the drive supports USB 3.0. What is the most likely cause?

A.The external drive is failing and needs to be replaced.
B.The USB cable is only rated for USB 2.0.
C.The drive is formatted with FAT32, which limits transfer speeds.
D.The computer's USB drivers are outdated.
AnswerB

Using a USB 2.0 cable with a USB 3.0 device will limit the transfer speed to USB 2.0 rates.

Why this answer

If a USB 3.0 device is plugged into a USB 2.0 port or a cable that only supports USB 2.0, it will fall back to slower speeds. The cable or port is the most common bottleneck. Driver issues are less likely, and the drive itself is not faulty.

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26
MCQeasy

A small business owner wants to add a second internal hard drive to a desktop computer for nightly backups. The existing drive is a 2.5-inch SATA SSD. The motherboard has one free SATA port and one free power connector from the PSU. Which type of drive should the technician install to maximize compatibility and reliability?

A.A 2.5-inch SATA HDD
B.A 3.5-inch SATA HDD
C.An M.2 SATA SSD
D.A 2.5-inch PATA (IDE) HDD
AnswerB

A 3.5-inch SATA HDD uses the same SATA data and power connectors as the existing SSD, is designed for desktop cases, and offers high capacity at low cost, making it ideal for nightly backups.

Why this answer

This question tests basic knowledge of SATA interfaces and form factor compatibility. A 3.5-inch SATA HDD is the standard choice for bulk storage in a desktop, and it uses the same SATA data and power connectors as the existing SSD. The other options either have incompatible connectors or are not standard internal drives.

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27
MCQmedium

A technician is building a new workstation for video editing and needs to choose a storage configuration that offers the best read performance for large media files. Which setup should they select?

A.A single 2TB 7200 RPM HDD
B.Two SSDs in RAID 1 (mirroring)
C.Two SSDs in RAID 0 (striping)
D.A single NVMe SSD
AnswerC

RAID 0 stripes data across both drives, significantly boosting read and write speeds for large files.

Why this answer

This question tests RAID level knowledge for performance. RAID 0 stripes data across multiple drives, improving read/write speeds, which is ideal for large file access in video editing.

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28
MCQhard

A technician is troubleshooting a server that uses a RAID 5 array with three 1TB HDDs. One drive fails, and the technician replaces it with a new 1TB HDD. After rebuilding, the array reports only 1.8TB of usable space. What is the most likely cause?

A.The new drive has a different sector size (4K vs 512e).
B.The RAID controller is using some space for metadata.
C.The replacement drive has a slightly smaller actual capacity than the original drives.
D.The RAID 5 array is degraded and needs a second drive to be replaced.
AnswerC

Drive manufacturers advertise capacity in decimal (1TB = 1,000,000,000,000 bytes), but actual capacity can vary slightly; the array uses the smallest drive's capacity.

Why this answer

This question tests advanced RAID understanding. RAID 5 uses one drive's worth of capacity for parity, so three 1TB drives yield 2TB usable. The loss of 0.2TB suggests the replacement drive has slightly less capacity due to manufacturer differences or sector mapping.

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29
MCQmedium

A technician is troubleshooting a desktop that fails to boot after the user installed a new M.2 NVMe SSD. The computer powers on, but the screen remains black and no BIOS splash screen appears. What is the most likely cause of this issue?

A.The M.2 drive is not fully seated in the slot.
B.The motherboard's BIOS is outdated and does not support NVMe boot.
C.The M.2 drive is a SATA type but the slot only supports NVMe.
D.The power supply unit is insufficient to power the new drive.
AnswerB

Older motherboards may require a BIOS update to add NVMe support. Without it, the system cannot initialize the NVMe drive as a boot device, resulting in a black screen.

Why this answer

This question tests understanding of M.2 installation and BIOS/UEFI configuration. Many motherboards require a specific UEFI setting (CSM disabled, UEFI boot enabled) or a BIOS update to support NVMe as a boot device. The most common issue is that the motherboard's firmware does not recognize the NVMe drive without a BIOS update.

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30
MCQmedium

A technician is tasked with upgrading a desktop computer that has a 500GB SATA SSD and a 2TB SATA HDD. The motherboard has one M.2 slot (PCIe 3.0 x4) and four SATA III ports. The user wants faster boot times and application loading. Which upgrade will provide the most noticeable performance improvement?

A.Replace the 2TB HDD with a 2TB SATA SSD.
B.Install an M.2 NVMe SSD and migrate the OS and applications to it.
C.Add more RAM to the system.
D.Replace the 500GB SATA SSD with a larger SATA SSD.
AnswerB

An M.2 NVMe SSD is much faster than a SATA SSD (up to 3,500 MB/s vs 550 MB/s). Moving the OS and applications to the NVMe drive will dramatically reduce boot times and application loading.

Why this answer

This question tests understanding of storage performance hierarchy. The existing SATA SSD is already fast for boot and applications, but an M.2 NVMe SSD is significantly faster (3-5x). Replacing the HDD with another SSD would not improve boot times as much, and adding RAM does not directly affect storage speed.

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