Question 1:

In Chapter 1, we discussed DDoS attacks. What is a DDoS attack? In what two ways was the KrebsonSecurity.com DDoS attack unusual? What specific security weakness did the Mirai malware use to propagate from machine to machine?

Question 2:

Using a search engine, find a list of the 5 most common computer crimes of last year. Pick one of the top 5 describe how it functions and how to guard against it.

Question 3:

Refer to Figure 2-16 in the text. When the client transmits to the mail server, the source port is ___________________________ and the destination port is ___________________________. When the SMTP server transmits to the client host, the source port is _________________________ and the destination port is ________________________. USE NUMBERS ONLY FOR YOUR ANSWERS.

Question 4:

How many permutations can you represent with 6 binary digits? _________________________________ In TCP, the port number is 16 bits long. How many different port numbers can be represented? _____________________________

Your display has 64k color levels. To represent these colors, it requires ____________________ bits.

If the classifications for students are freshmen, sophomore, junior, senior, master, and doctorate, how man bits would be needed to represent these options? _______________________________________.

Question 5:

What leased line option if Figure 3-15 would be required for Figure 3-9? ________________________

What is the minimum number of OC lines needed to provide 250 Mbps?__________________________