Network+ Security Quiz: Lock Down Your Knowledge

1. Which protocol secures web traffic using SSL/TLS encryption?

HTTP

HTTPS

FTP

SMTP

2. What is the purpose of a security information and event management (SIEM) system?

Replace antivirus software

Aggregate and analyze security logs and events

Block all network traffic

Encrypt user passwords

3. Which attack involves tricking users into revealing sensitive information?

DDoS attack

Brute force attack

Social engineering

Packet sniffing

4. What does RADIUS provide in network authentication?

Wireless encryption

Centralized authentication and authorization

Firewall filtering

Data compression

5. Which cryptographic hash function produces a 128-bit output and is considered weak?

SHA-256

MD5

SHA-512

BLAKE2

6. What is the primary benefit of network segmentation?

Increases network speed

Limits breach impact and controls traffic flow

Eliminates the need for firewalls

Reduces hardware costs

7. Which type of malware replicates itself without user interaction?

Trojan

Worm

Spyware

Adware

8. What does a certificate authority (CA) do in public key infrastructure?

Encrypts all network traffic

Issues and verifies digital certificates

Blocks unauthorized users

Monitors network performance

9. Which of the following is a common wireless security protocol?

WEP

WPA2

Open network

No encryption

10. What is the primary role of an intrusion detection system (IDS)?

Prevent all network attacks

Monitor and alert on suspicious network activity

Encrypt all traffic

Replace firewalls

11. Which encryption standard is considered the successor to DES and is widely used for securing sensitive data?

AES

RSA

MD5

SHA-1

12. What does the principle of least privilege mean in network security?

Users have maximum access to all resources

Users have only the minimum access needed for their role

Administrators have unrestricted access

Everyone shares the same password

13. Which attack type involves sending excessive traffic to overwhelm network resources?

Phishing

Man-in-the-middle

Denial of Service (DoS)

SQL injection

14. What is the primary function of a VPN?

Increase bandwidth capacity

Create a secure encrypted tunnel over public networks

Block malware on endpoints

Monitor employee productivity

15. Which authentication method requires something you have and something you know?

Single-factor authentication

Multi-factor authentication

Biometric authentication

Token-based authentication

16. What does a demilitarized zone (DMZ) protect against?

Wireless interference

Direct attacks on internal networks

Data loss from hard drive failure

Slow network performance

17. Which of the following is a symmetric encryption algorithm?

RSA

ECC

3DES

DSA

18. What is the primary purpose of a VLAN in network security?

Increase network speed

Segment network traffic and isolate users

Replace physical switches

Encrypt wireless signals

19. Which protocol is used for secure remote access to network devices?

Telnet

SSH