TRUE/FALSE
1. Traditional paging systems use low-power transmitters.
ANS: F
2. Traditional paging systems use widely spaced transmitters.
ANS: T
3. Pagers use the VHF band.
ANS: T
4. Pagers use the UHF band.
ANS: T
5. Pager messages typically require a lot of bandwidth.
ANS: F
6. Each pager has a unique address.
ANS: T
7. Typically, pager systems keep track of each pager's location.
ANS: F
8. Satellite systems are used by pagers.
ANS: T
9. All pagers are one-way only.
ANS: F
10. Wireless LANs are typically slower than wired LANs.
ANS: T
11. Wireless LANs are typically more expensive than wired LANs.
ANS: T
12. The IEEE 802.33 covers wireless LANs.
ANS: F
13. Few companies actually use the IEEE 802 wireless LAN specifications.
ANS: F
14. Wireless LANs typically use a spread-spectrum modulation.
ANS: T
15. IEEE 802 allows up to 1 watt of transmitter power.
ANS: T
16. The typical range of a wireless LAN in an office environment is about 10 meters.
ANS: F
17. The range of a Bluetooth system in an office environment is about 0.01 meters to 10 meters.
ANS: T
18. Any Bluetooth device should be able to communicate with any other Bluetooth device.
ANS: T
19. Bluetooth has a channel bit rate of 100 Mbps.
ANS: F
20. Bluetooth devices communicate automatically once they are in range of each other.
ANS: T
21. Bluetooth uses spread-spectrum modulation.
ANS: T
22. Bluetooth uses frequency hopping.
ANS: T
23. Bluetooth is designed for audio as well as data.
ANS: T
24. Currently, no wireless LAN uses light-wave transmission.
ANS: F
25. A wireless LAN based on light waves would need direct line of sight for connections.
ANS: F
MULTIPLE CHOICE
1. Pagers use:
| a. | the VHF band only |
| b. | the UHF band only |
| c. | both the VHF and UHF bands |
| d. | the VHF band, the UHF band, and the ISM band |
ANS: C
2. ISM stands for:
| a. | IEEE Standard Message | c. | Industrial, Scientific, and Messaging |
| b. | IEEE Secure Message | d. | Industrial, Scientific, and Medical |
ANS: D
3. CAPCODE is:
| a. | an encryption scheme used for pagers |
| b. | an addressing scheme used for pagers |
| c. | an error-detection scheme used for pagers |
| d. | a digital modulation scheme used for pagers |
ANS: B
4. In a one-way pager system:
| a. | all pages are sent from all transmitters |
| b. | each transmitting antenna covers a wide area |
| c. | transmitters use relatively high power |
| d. | all of the above |
ANS: D
5. POCSAG stands for:
| a. | Pager Operations Common Standards Advisory Group |
| b. | Pager Operations Code Standardization Advisory Group |
| c. | Post Office Code Standardization Advisory Group |
| d. | Post Office Common Standards Advisory Group |
ANS: C
6. A typical pager system does not:
| a. | require "handoffs" | c. | require error detection |
| b. | allow "roaming" | d. | all of the above |
ANS: A
7. The IEEE specification covering wireless LANs is:
| a. | 802.10 | c. | 802.12 |
| b. | 802.11 | d. | 802.13 |
ANS: B
8. The IEEE 802 spec for wireless LANs uses the:
| a. | VHF band | c. | ISM band |
| b. | UHF band | d. | infrared band |
ANS: C
9. The IEEE 802 document for wireless LANs specifies the use of:
| a. | CSMA/CA | c. | CDMA |
| b. | CSMA/CD | d. | all of the above |
ANS: A
10. BSS stands for:
| a. | Basic Service Set | c. | Bluetooth Service System |
| b. | Basic Service System | d. | none of the above |
ANS: A
11. Bluetooth uses:
| a. | CDMA | c. | QPSK |
| b. | frequency hopping | d. | all of the above |
ANS: B
12. Bluetooth uses the:
| a. | VHF band | c. | ISM band |
| b. | UHF band | d. | infrared band |
ANS: C
13. TDD stands for:
| a. | Time-Division Duplex | c. | Time Delay Difference |
| b. | Time-Delayed Duplex | d. | Total Distance Delay |
ANS: A
14. A Bluetooth "piconet" has:
| a. | 2 nodes | c. | 2 to 8 nodes |
| b. | 2 to 4 nodes | d. | 2 to 16 nodes |
ANS: C
15. Two or more connected piconets forms a:
| a. | micronet | c. | TDD net |
| b. | multinet | d. | scatternet |
ANS: D
16. The basic range of a Bluetooth device is:
| a. | 10 cm to 1 meter | c. | 10 cm to 100 meters |
| b. | 10 cm to 10 meters | d. | within 10 feet |
ANS: B
17. IRDA stands for:
| a. | Infrared Data Association | c. | Infrared Restricted Data Area |
| b. | Infrared Digital Association | d. | Infrared Roaming Data Area |
ANS: A
18. The range of an IRDA system is:
| a. | 1 meter | c. | 1 foot |
| b. | 10 meters | d. | 10 feet |
ANS: A
19. Infrared networks:
| a. | cannot penetrate walls | c. | can use reflected infrared beams |
| b. | can use diffused infrared beams | d. | all of the above |
ANS: D
20. The maximum range of a typical wireless modem is:
| a. | 1 meter | c. | several hundred meters |
| b. | several meters | d. | several thousand meters. |
ANS: D
COMPLETION
1. Each pager has a unique address called a ____________________.
ANS: capcode
2. Many pagers can share a frequency using ____________________.
ANS: TDMA
3. The POCSAG was devised by the British ____________________ Office.
ANS: Post
4. A POCSAG message uses a ____________________-bit error correction code.
ANS: 10
5. IEEE ____________________ covers wireless LANs.
ANS: 802.11
6. The IEEE document specifies a maximum power of ____________________ for wireless LANs.
ANS: 1 watt
7. Bluetooth uses the ____________________ band.
ANS: ISM
8. A network of 2 to 8 Bluetooth devices is called a ____________________.
ANS: piconet
9. A Bluetooth scatternet consists of 2 or more ____________________.
ANS: piconets
10. An IRDA system is deliberately restricted to a range of ____________________.
ANS: 1 meter
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