CTEC 445 AACC Networking Questions

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Part1: =

TextBook1: Chapter 3

Can you use a scanner to check open ports on a computer on another LAN?
What are the various phases of penetration testing that make use of scanning tools?

What is the difference between a ping scan and a Ping of Death?

1. What useful information comes from port scans?Can you stop a port scan if you discover you are being scanned?
   Describe factors to consider when selecting a scanning tool that is most appropriate for a particular task.

In the NmapFE program, where do you set the spoofed IP you will use as the from field on the ping packets you send?

1. Can Cheops be used to scan the entire Internet?
   Some “security experts” used to scan various companies’ networks and then send them e- mails informing them of their shortcomings and offering to fix these for a fee. Is this a reasonable and ethical marketing technique?
2. Part2: =

TextBook2: Chapter 2

1. 2.1 What are the essential ingredients of a symmetric cipher?
   2.2 What are the two basic functions used in encryption algorithms?
   2.3 How many keys are required for two people to communicate via a cipher?
   2.4 What is the difference between a block cipher and a stream cipher?
   2.5 What are the two general approaches to attacking a cipher?
   2.6 List and briefly define types of cryptanalytic attacks based on what is known to the attacker.
   2.7 What is the difference between an unconditionally secure cipher and a computation-ally secure cipher?
   2.8 Briefly define the Caesar cipher.
   2.9 Briefly define the monoalphabetic cipher.
   2.10 Briefly define the Playfair cipher.
   2.11 What is the difference between a monoalphabetic cipher and a polyalphabetic cipher?
   2.12 What are two problems with the one-time pad?
   2.13 What is a transposition cipher?
2. 2.14 What is steganography?