1. Computer Networks Fall, 2007 Prof Peterson

2. CIS 235: Networks Fall, 2007 Western State College  What is “store and forward”?  What is a buffer / queue?  What is packet loss? How does packet loss manifest itself? What is a tier-2 ISP? What does it mean to “peer with” an ISP? Who gets the money you pay for your Internet connection? What is a POP? What is statistical multiplexing?

3. CIS 235: Networks Fall, 2007 Western State College What is the analogy in the text regarding routing in a packet switching network? What is a tier-1 ISP? What sort of link speeds do the tier-1’s have?  What sort of delays does a packet encounter at each node?  Which of these depend on the underlying technology?  Which depend on current network conditions?  What is “traffic intensity”?

4. CIS 235: Networks Fall, 2007 Western State College  What is instantaneous throughput? Average throughput?  What is a bottleneck link?  When things go slow, what are the two likely causes?  Does the Internet backbone have excess capacity?

5. CIS 235: Networks Fall, 2007 Western State College  What is a layered architecture?  How do the layers connect with each other?  How would layers be represented in a programming language?  What programming language feature corresponds to encapsulation?  What is a “service model”?  Why did some engineers argue against layering?  Is this book top down or bottom up?

6. CIS 235: Networks Fall, 2007 Western State College  What sort of applications do we find at the application layer?  What protocols run here?  What services does this layer need from the one below?  What is the data transmitted at this layer called?  Where does this layer run?