Review for Second Test

The following questions are provided to help you study for the second test. Do not expect to see these exact questions on the test.

  1. What does topology mean, in regard to network design?

  2. What are the three parts to the text's preferred hierarchical design?

  3. How does adding more switches for more workstations (and only doing that) affect the number of broadcast domains in a network?

  4. How does adding more subnets to an existing network affect the number of broadcast domains in that network?

  5. How does a hierarchical design support adding more subnets better than a flat design, from the perspective of number of hops to another network?

  6. A mesh provides many redundant connections among devices. In a full mesh, how many connections would be needed to connect 10 routers? How about 20 routers?

  7. Assume we are using a hierarchical network design. We add a new router to our access layer. To what layer should that router be connected?

  8. In the question above, what problem would be created by connecting our new router directly to another at its physical location?

  9. What is a spoke and hub network design?

  10. What is the purpose of load balancing in a network design? How is it probably accomplished in a hierarchical design?

  11. Redundant paths through a network are desirable, but also troublesome. What does the spanning tree protocol do to manage possible problems?

  12. Your text lists three states a port on a switch can be in. What are they and what do they mean with regard to what that switch is doing?

  13. What is the broadcast address that most switches would recognize?

  14. Switches may be used to implement VLANs. When this is done, what is the difference in the behavior of such a switch when it receives a broadcast from a device attached to one of its ports?

  15. What is the theoretical shape of a signal strength map of an omnidirectional antenna?

  16. If an antenna is mounted vertically, how should we think of the orientation of the strongest signal from that antenna?

  17. What is Hot Standby mode with regard to Cisco wireless access points?

  18. Name four kinds of servers that should be set up for redundancy in your network.

  19. What new virtual concept was introduced in the discussion of Hot Standby Router Protocol?

  20. What is circuit diversity, and why should we ask for it from our ISP?

  21. What is encapsulation, with regard to packets passed across different networks?

  22. What should we expect the first byte in an IPv4 multicast address to look like?

  23. How does LFI improve delivery of time sensitive packets?

  24. How does RTP improve the service provided by another protocol with which it is commonly paired?

  25. What is the DSCP field of an IP packet for?

  26. What is the advantage to starting an enterprise IP scheme with a class A private address instead of a class C private address?

  27. If your enterprise requires you to have a real, assigned public address for your network, how do you know who you need to ask for it?

  28. When possible, you should use DHCP to assign addresses on your network. Name three kinds of devices for which this is not an appropriate plan.

  29. What must be done to make a router act as a DHCP relay agent?

  30. How do you get access to the Internet if you are using private addressing on your network?

  31. What makes an address scheme classful or classless?

  32. What does the address notation tell us about the network this address is on?

  33. Name three routing protocols that understand CIDR notation.

  34. In route summarization, what must be true about all routes included in the summary? What must also be true about routes not intended to be included?