Network Security
55 practice questions with explanations — 15 free to try
PassNova has 55 CompTIA Network+ practice questions on Network Security, each with a clear explanation. A 15-question taster is free with no sign-up; the full bank is part of PassNova Premium. Updated for 2026.
Network Security: example questions & answers
3 worked examples with answers and explanations below. Try 15 CompTIA Network+ questions free in the browser; the full 55-question Network Security bank is part of PassNova Premium.
Which element of the CIA triad ensures data is not altered by unauthorized parties?
- AIntegrity✓
- BConfidentiality
- CAuthentication
- DAvailability
Answer: Integrity ensures data is not modified by unauthorized parties.
Which CIA element ensures only authorized users can access data?
- AConfidentiality✓
- BAvailability, keeping systems reachable
- CIntegrity, keeping data unaltered
- DAccounting
Answer: Confidentiality ensures data is accessible only to authorized users.
Which CIA element ensures systems and data are accessible when needed?
- AConfidentiality
- BIntegrity
- CAuthorization
- DAvailability✓
Answer: Availability ensures resources are accessible to authorized users when needed.