PCCET Network Security Fundamentals Quiz

1. What is the main difference between symmetric and asymmetric encryption?

Symmetric uses one key; asymmetric uses two keys

Asymmetric is faster than symmetric

Symmetric cannot be broken

Asymmetric only works for emails

2. Which term describes the practice of hiding the internal network structure from external view?

Port forwarding

Network obfuscation

Traffic analysis

Packet fragmentation

3. What is the primary function of a security policy in an organization?

Establish guidelines and standards for information security

Replace the need for firewalls

Encrypt all stored data

Monitor employee emails

4. Which protocol is commonly used for secure email transmission?

SMTP

SMTPS/TLS

HTTP

DNS

5. What is the primary goal of vulnerability assessment?

Identify and document security weaknesses

Encrypt all network traffic

Remove all user access

Increase firewall rules

6. Which of the following is a characteristic of a stateful firewall?

Tracks connection states and context

Only examines packet headers

Cannot block outgoing traffic

Operates only at Layer 2

7. What does a WAF (Web Application Firewall) primarily protect against?

Network layer attacks

Application layer attacks and exploits

Physical server theft

Email spam

8. Which security framework focuses on identifying, protecting, detecting, responding, and recovering from threats?

ISO 27001

NIST Cybersecurity Framework

PCI DSS

GDPR

9. What is the purpose of a VPN (Virtual Private Network)?

Create an encrypted tunnel for secure remote access

Increase internet download speed

Block all incoming traffic

Monitor employee productivity

10. Which attack involves sending overwhelming traffic to disable a service?

Phishing

Man-in-the-middle

Denial of Service (DoS)

Social engineering

11. What is the primary function of a firewall in network security?

Monitor and control incoming and outgoing network traffic

Encrypt all data transmitted over the network

Detect and remove malware from endpoints

Manage user authentication credentials

12. Which of the following best describes network segmentation?

Dividing a network into isolated subnetworks

Compressing network traffic

Increasing network speed

Removing network devices

13. What does IDS stand for in network security?

Internal Data Storage

Intrusion Detection System

Internet Device Security

Integrated Denial Service

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

Telnet

SSH (Secure Shell)

HTTP

FTP

15. What is a zero-day vulnerability?

A flaw unknown to vendors before public disclosure

A vulnerability that expires after one day

A threat detected on day zero of an attack

A security patch released immediately

16. Which authentication method provides the strongest security?

Single password

Multi-factor authentication (MFA)

Security questions

Username only

17. What is the purpose of a DMZ (demilitarized zone) in network architecture?

Isolate public-facing servers from internal networks

Encrypt all traffic between networks

Increase network bandwidth capacity

Manage user login credentials

18. Which of the following is an example of a Layer 7 (application layer) threat?

IP spoofing

SQL injection

MAC flooding

DNS amplification

19. What does SSL/TLS encryption primarily protect?

Data in transit between client and server

Data stored on disk drives

Network bandwidth usage

Firewall configuration files

20. Which security model follows the principle of 'least privilege'?

Allow all traffic by default, deny specific threats

Grant users only the minimum access needed for their role

Encrypt all communication channels

Implement multi-factor authentication everywhere