CompTIA SecurityX Practice Questions: Hardware Security

8 free, exam-style CompTIA SecurityX (CAS-005) practice questions covering Hardware Security, 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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Hardware Security practice questions

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

Q1. What is the PRIMARY purpose of attestation in trusted computing?

  • A.Increasing network speed
  • B.Verifying system integrity before granting access✓ Correct
  • C.Disabling encryption
  • D.Bypassing authentication
Explanation: Attestation proves a system's state meets security requirements. Learn more.

Q2. Which of the following is a key security control for mitigating Spectre/Meltdown vulnerabilities?

  • A.Disabling all CPU mitigations
  • B.Kernel page table isolation (KPTI)✓ Correct
  • C.Shared memory spaces
  • D.No process isolation
Explanation: KPTI protects against speculative execution attacks. Learn more.

Q3. Which of the following is MOST important when securing RISC-V implementations?

  • A.Closed-source designs
  • B.Hardware root of trust integration✓ Correct
  • C.Disabled memory protection
  • D.No firmware updates
Explanation: RISC-V requires additional security measures as an open standard. Learn more.

Q4. Which of the following is a key security control for mitigating RowHammer attacks?

  • A.Disabling all memory protections
  • B.Target row refresh (TRR) in DRAM✓ Correct
  • C.Shared memory spaces
  • D.No process isolation
Explanation: TRR protects against bit-flipping attacks. Learn more.

Q5. What is the PRIMARY security benefit of using physically unclonable functions (PUFs) in hardware?

  • A.Predictable cryptographic keys
  • B.Unique device fingerprints based on physical characteristics✓ Correct
  • C.Disabled memory protection
  • D.No process isolation
Explanation: PUFs leverage manufacturing variations for secure identification. Learn more.

Q6. Which of the following is a key security control for mitigating cold boot attacks?

  • A.Unencrypted memory
  • B.Memory encryption and rapid key zeroization✓ Correct
  • C.Disabled memory protection
  • D.No process isolation
Explanation: Memory encryption protects against physical memory attacks. Learn more.

Q7. Which of the following is a key security control for mitigating electromagnetic fault injection attacks?

  • A.Unshielded circuits
  • B.Tamper-resistant packaging and sensor grids✓ Correct
  • C.Disabled memory protection
  • D.No process isolation
Explanation: Physical protections are needed against EM-based fault attacks. Learn more.

Q8. What is the PRIMARY purpose of a Trusted Platform Module (TPM)?

  • A.Enhance network speed
  • B.Secure cryptographic keys✓ Correct
  • C.Improve CPU performance
  • D.Manage firewall rules
Explanation: A TPM securely stores cryptographic keys for hardware-based encryption. Learn more.

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