blake_ch23.pdf

8/17/2019 blake_ch23.pdf

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Chapter 23: Paging and Wireless Data Networking

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 pagersb. 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 areac. 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


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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


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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.


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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

blake_ch23.pdf

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