CST 311 Week 7

CST 311 Week 7

This week had a lot of information to take in. We moved onto studying the link layer. I found myself taking the most notes on this section as I was very unfamiliar with the content. Link layer services, multiple access links, and error detection and correction were discussed. The various MAC protocols were then explored. Finally LANs and switches were explored within the ARP protocol. We then moved on to security in computer networks. The basics of security were discussed. I found cryptography to be fascinating as we explored from basic substitution ciphers up to the Advanced Encryption Standard. It was neat to see how AES is so much more secure than DES. Finally message integrity, digital signatures, and end point authentication were explored.