Appendix B. Answers to Chapter Review Questions

1:

What are the four types of network security threats?

A1:

Answer: The four types of network security threats are unstructured threats, structured threats, external threats, and internal threats.

2:

What are the three main attack types?

A2:

Answer: The three main attack types are reconnaissance, access, and denial-of-service.

3:

What is the first line of defense against external attacks?

A3:

Answer: The perimeter defenses on your network provide the first line of defense against external attacks.

4:

Why is network security needed?

A4:

Answer: The global connectivity of the Internet has enabled hackers to attack your network from anywhere in the world.

5:

Attacks against network resources fall into ...

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