TDC 425
Summer I 2011
Homework #1
Due: June 21st (Not accepted after 6:00pm)
1. The College of CDM wants to create a new degree program with the College of Commerce. The dean of CDM meets with the CDM graduate curriculum committee. The graduate curriculum committee then meets with the faculty of CDM. When a proposal is finished, the secretary for the College of CDM sends it to the secretary of the College of Commerce, and the College of Commerce begins its deliberation of the degree (similar to CDM school). Meanwhile, the dean of Commerce talks to the dean of CDM at lunch one day to offer a couple suggestions concerning the joint degree. Assuming that the deans are the top layer of the model, is this scenario similar to the way either the OSI model or TCP/IP functions? Explain.
2. Using a desktop computer with a DSL connection into an Internet service provider, you download a web page from the Internet. List all the different network configurations discussed in class (such as microcomputer to mainframe, LAN to WAN, etc.) that are more than likely used. Do not list a configuration if it is not likely to be used.
3. The layers of the TCP/IP protocol suite and the OSI model are different. Which layers are “missing” from the TCP/IP protocol suite? Explain.
4. You are watching a television show in which one character is suing another. The lawyers for both parties meet and try to work out a settlement. Is there a logical or physical connection between the lawyers? What about between the two parties?
For mathematical problems, show all work.
5. What is the frequency in Hertz (cycles per second) of a signal that repeats 40,000 times within one minute? What is the period of the signal?
6. What is the baud rate of a digital signal that employs Differential Manchester and has a data transfer rate of 6000 bps?
7. What is the data rate (in bps) of a digital signal that employs NRZ-I and has a baud rate of 10,000?
8. What is the decibel loss of a signal that starts at point A with a strength of 4000 watts and ends at point B with a strength of 400 watts? Solve this problem using either logarithms or the approximation technique (the ½ rule).