CompTIA A+ Core 1 Practice Questions: Storage

9 free, exam-style CompTIA A+ Core 1 (220-1201) 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.

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Storage practice questions

Answers and explanations are shown. Take the timed exam above to test yourself first.

Q1. Which external storage connection was designed to carry SATA signaling outside the computer case?

  • A.eSATA✓ Correct
  • B.VGA
  • C.RJ11
  • D.PS/2
Explanation: eSATA extends SATA connectivity to external drives while preserving SATA-style storage communication. Learn more.

Q2. Which statement best describes NVMe storage?

  • A.It is a high-performance storage protocol designed for PCIe SSDs✓ Correct
  • B.It is a printer language for impact printers
  • C.It is a cellular voice standard
  • D.It is a type of coaxial cable
Explanation: NVMe is optimized for flash storage over PCIe and provides high queue depth and low latency. Learn more.

Q3. Which RAID level combines striping and mirroring?

  • A.RAID 0
  • B.RAID 1
  • C.RAID 5
  • D.RAID 10✓ Correct
Explanation: RAID 10 (1+0) offers both speed and redundancy. Learn more.

Q4. What is the purpose of an SSD's TRIM command?

  • A.Defragment files
  • B.Mark unused blocks for garbage collection✓ Correct
  • C.Encrypt data
  • D.Boost read speeds
Explanation: TRIM improves SSD performance and longevity. Learn more.

Q5. What causes a loud clicking noise in an HDD?

  • A.Normal operation
  • B.Fragmentation
  • C.Failing read/write head✓ Correct
  • D.Overheating
Explanation: Clicking indicates mechanical failure. Learn more.

Q6. What is the function of an SSD's TRIM command?

  • A.Defragment files
  • B.Mark unused blocks for garbage collection✓ Correct
  • C.Encrypt data
  • D.Boost read speeds
Explanation: TRIM improves SSD performance and longevity. Learn more.

Q7. Which RAID level requires at least 3 disks?

  • A.RAID 0
  • B.RAID 1
  • C.RAID 5✓ Correct
  • D.RAID 10
Explanation: RAID 5 uses distributed parity across disks. Learn more.

Q8. What is the maximum speed of SATA III?

  • A.3 Gbps
  • B.6 Gbps✓ Correct
  • C.12 Gbps
  • D.24 Gbps
Explanation: SATA III (6 Gbps) is common for HDDs/SSDs. Learn more.

Q9. Which file system is read-only on optical media?

  • A.NTFS
  • B.FAT32
  • C.ISO 9660✓ Correct
  • D.exFAT
Explanation: ISO 9660 standard for CD/DVD-ROMs. Learn more.

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