Netassignment 2
Module 2 Assignments
For this module you are required to complete the following assignment:
· Chapter 3 Exercises: pp. 100-101: #1, 2, 5, 12, and 13
1. Table 3-1 shows Category 1 wire transmitting a signal for 5 to 6 kilometers (3 to 4 miles) but Category 5e for only 100 meters (328 feet). Is Category 1 the best wire for long-distance transmissions? Explain.
2. List three different examples of crosstalk that don’t involve wires and electric signals. (Hint: Look around you.)
5. The local cable TV company is considering removing all the coaxial cable and replacing it with fiber optic cable. List the advantages and disadvantages of this plan.
12. Given that a satellite signal travels at the speed of light, exactly how long does it take for a signal to go from the Earth to a satellite in geosynchronous orbit, and back to Earth? Show your calculations.
13. How long does it take a signal to reach a satellite in low-Earth orbit? Show the calculations
•Thinking Outside the Box #4
You need to connect two buildings across a public road, and it is not feasible to use a direct cable connection. Under what circumstances would you use a microwave link? A radio link? an infrared laser link? What about th other wireless alternatives?
· Chapter 4. Chapter 4 Exercises: #1, 3, 6 and 12
1. What are the advantages, if any, of the older EIA 232F interface over the newer USB interface?
3. If I have a device that has a Universal Serial Bus 3.0 interface, but my computer only has a Universal Serial Bus 2 connector, is my device going to work? Explain why or why not.
6. List two examples not mentioned in the book for each of the following connections: half-duplex and full-duplex.
12. What types of devices are best served with an isochronous connection?
•Thinking Outside the Box #2
You are using a computer system that has 20 terminals connected to a mainframe computer using roll-call polling. Each terminal is polled once a second by the mainframe and sends a 200-byte record every 10 seconds. The boss says you should remove terminals, install computer workstations, and replace the polling with asynchronous connections Which is more efficient: keeping the terminals and polling, or using workstations and asynchronous connections?
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