Chapter 2
| 1: | Which wireless NIC form factors are best for small wireless computer devices? |
| A1: | Answer: PC Card, Mini-PCI, and CompactFlash. |
| 2: | What are examples of elements that impair the propagation of wireless communications signals through the air medium? |
| A2: | Answer: Rain, snow, smog, and smoke. |
| 3: | What is the primary purpose of a base station? |
| A3: | Answer: Interfaces the wireless communications signals traveling through the air medium to a wired network. |
| 4: | What are common features of wireless middleware? |
| A4: | Answer: Optimization techniques, intelligent restarts, data bundling, screen shaping and reshaping, and end-system support. |
| 5: | On what layers of the OSI reference model do wireless networks operate? |
| A5: | Answer: Physical layer and data link layer. |
| 6: | How is throughput different from data rate? |
| A6: | Answer: Throughput doesn't include overhead of protocols. |
| 7: | True or false: A computer device stores data in analog form. |
| A7: | Answer: False. |
| 8: | A wireless NIC must convert the information into what type of signal before transmission through the air medium? |
| A8: | Answer: Analog. |
| 9: | Which medium access protocol is common with wireless networks? |
| A9: | Answer: CSMA. |
| 10: | Explain how the ARQ form of error control works. |
| A10: | Answer: The receiving wireless NIC performs error checking and sends a request to the sending wireless NIC to retransmit the frame if errors are found. |
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