3.1.15 - Describe the different methods of network security.

Question 1

What are the three key factors of network security?

Answer 1

The three key factors are confidentiality, integrity (maintaining accuracy of data), and availability (protection from DoS attacks).

Question 2

Why is securing network systems difficult?

Answer 2

Securing systems is difficult because it’s impossible to plan for every eventuality, insiders can go rogue, systems can unravel from a weak point, and users may fall victim to social engineering.

Question 3

What is authentication in network security?

Answer 3

Authentication is the process of verifying the identity of users accessing the wireless network, using methods like passwords, digital certificates, or biometric authentication. It can involve 1FA, 2FA, or 3FA.

Question 4

What is a firewall?

Answer 4

A firewall is a security device that monitors and controls network traffic, blocking unauthorised access, preventing malware attacks, and protecting sensitive data. It can be hardware, software, or a hybrid.

Question 5

What is a MAC address?

Answer 5

A MAC (Media Access Control) address is a hard-coded address assigned to devices by manufacturers, used to identify specific hardware. Devices can be blocked or allowed based on their MAC addresses.

Question 6

What is physical security in network protection?

Answer 6

Physical security protects hardware and network components from threats like theft, fire, or natural disasters. Measures include locked doors, access control (biometrics), off-site backups, and CCTV.

Question 7

What methods are used to ensure data encryption and protection?

Answer 7

Methods include encryption, UserIDs, passwords, PSK (pre-shared keys), WEP (Wired Equivalent Privacy), and WPA2 (Wi-Fi Protected Access 2).