1: Why is the topology of the network so important? Are the topology and the logical layout of a network the same thing?
2: Why are hierarchical networks built in "layers"?
3: Note the layer of the network in which each of these functions/services should be performed and why:
• Summarize a set of destination networks so that other routers have less information to process.
• Tag packets for quality of service processing.
• Reduce overhead so that packets are switched as rapidly as possible.
• Use a default route to reach internal destinations.
• Control the traffic that is admitted into the network through packet level filtering.
• Aggregate a number of smaller links into a single larger link.
4: What two factors is speed of convergence reliant on?
5: What types of controls should you typically place on an access layer router to block attacks from within the network?
6: What are the positive and negative aspects of a single router collapsed core?
7: What aspects of policy-based routing are different than the routing a router normally performs?
8: Should you normally allow directed broadcasts to be transmitted onto a segment?
9: What determines the number of routers participating in convergence?
10: Should a failing destination network in the access layer cause the routers in the core to recompute their routing tables?
11: What is the primary goal of the network core? What are the strategies used to reach that goal?
12: Why is optimum routing so important in the core?
13: What are the primary goals of the distribution layer?
14: What strategies are used in the distribution layer to achieve its goals?
15: What are the primary goals of the access layer?
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