NETWORK SECURITY EXAMINATION QUESTIONS AND CORRECT ANSWER WITH EXPLANATION GRADED A+ STUDY GUIDE

NETWORK SECURITY EXAMINATION QUESTIONS AND
CORRECT ANSWER WITH EXPLANATION GRADED A+
STUDY GUIDE SOUTHERN NEW HAMPSHIRE UNIVERSITY
1. Network security is:
A. Hardware installation
B. Protecting networks from threats and attacks
C. Software development
D. Data entry
Answer: B
Rationale: It focuses on protecting network systems and data.

2. The main goal of network security is to ensure:
A. Speed only
B. Confidentiality, integrity, and availability
C. Hardware upgrade
D. UI design
Answer: B
Rationale: CIA triad principles.

3. CIA in cybersecurity stands for:
A. Central Internet Access
B. Confidentiality, Integrity, Availability
C. Cyber Internal Access
D. Control Internet Authority
Answer: B
Rationale: Core security model.

4. Confidentiality means:
A. Data is public
B. Data is accessible only to authorized users
C. Data is deleted
D. Data is encrypted only
Answer: B
Rationale: Prevent unauthorized access.

5. Integrity means:
A. Data is changed freely

, B. Data remains accurate and unaltered
C. Data is lost
D. Data is copied
Answer: B
Rationale: Ensures correctness.

6. Availability means:
A. Data is hidden
B. Systems are accessible when needed
C. Data is deleted
D. System is offline
Answer: B
Rationale: Reliable access.

7. Firewall is used to:
A. Increase speed
B. Block unauthorized network access
C. Store files
D. Design UI
Answer: B
Rationale: Network barrier.

8. Antivirus software protects against:
A. Hardware failure
B. Malware and viruses
C. UI errors
D. RAM issues
Answer: B
Rationale: Detects malicious software.

9. Malware is:
A. Safe software
B. Malicious software
C. Hardware
D. Network cable
Answer: B
Rationale: Harmful programs.

10. Phishing is:
A. Fishing activity

, B. Fake attempts to steal data
C. Hardware upgrade
D. Backup system
Answer: B
Rationale: Social engineering attack.

11. DDoS attack means:
A. Data deletion
B. Overloading a server with traffic
C. File transfer
D. Encryption
Answer: B
Rationale: Denial of service attack.

12. Encryption is:
A. Deleting data
B. Converting data into unreadable form
C. Copying files
D. Printing data
Answer: B
Rationale: Data protection method.

13. Decryption is:
A. Hiding data
B. Converting encrypted data back to readable form
C. Deleting data
D. Blocking network
Answer: B
Rationale: Reverse encryption.

14. Symmetric encryption uses:
A. Two keys
B. One shared key
C. No key
D. Hardware key
Answer: B
Rationale: Same key for encryption/decryption.

15. Asymmetric encryption uses:
A. One key