Assignment: Computer Science

Question I. Define and contrast the following terms: subnet, prefix, and BGP route?

Question II. Consider a datagram network using 16-bit host addresses. Suppose a router uses longest prefix matching and has the following forwarding table:

For each of the following 5 host addresses, give the matched interface # using above forwarding table.

Question III. How big is the MAC address space? The IPv4 address space? The IPv6 address space? Note: The size of an address space is the maximum number of different addresses it can have.

Question IV. In CSMA/CD, after the 5th collision, what is the probability that a node chooses K=4? The result K=4 corresponds to a delay of how many seconds on a 100 Mbps Ethernet?

Question V. List the serious security flaws of Wired Equivalent Privacy (WEP) for 802.11 wireless networks. How are those security flaws addressed by WiFi Protected Access (WPA)?

Question VI. Describe IPsec and how it can be used to create virtual private networks (VPNs).

Question VII. What is the difference between a permanent address and a care-of address? Who assigns a care-of address?

Question VIII. Identify and describe at least three common network vulnerabilities?

Question IX. What is an important difference between a symmetric key system and a public key system?

Question X. True or False, explain why?

i. Ethernet and 802.11 uses the same frame structure.
ii. The addresses in an Ethernet frame header are IP addresses.

Question XI. Complete the Wireshark Lab: SSL. The answers to all the questions in the lab are posted in Canvas. Follow all the steps in the lab and try to answer all the questions. Then check your answers using the solution file provided. There is no need to submit your answers to me for grading. You only need to submit a screenshot to show me that you opened the trace file and did the lab.

Question XII. Conduct a survey on routing protocols, select one protocol and discuss how it works, identify its advantages and disadvantages. The length of your review should be no more than 2 pages in length.