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1 | |
_______ is a first-generation cellular phone system. |
|
| | A) | AMPS |
| | B) | D-AMPS |
| | C) | GSM |
| | D) | none of the above |
|
2 | |
__________ is a second-generation cellular phone system. |
|
| | A) | AMPS |
| | B) | D-AMPS |
| | C) | GSM |
| | D) | none of the above |
|
3 | |
____________ is a digital version of AMPS. |
|
| | A) | GSM |
| | B) | D-AMPS |
| | C) | IS-95 |
| | D) | none of the above |
|
4 | |
___________ is a second-generation cellular phone system used in Europe. |
|
| | A) | GSM |
| | B) | D-AMPS |
| | C) | IS-95 |
| | D) | none of the above |
|
5 | |
________ is a second-generation cellular phone system based on CDMA and DSSS. |
|
| | A) | GSM |
| | B) | D-AMPS |
| | C) | IS-95 |
| | D) | none of the above |
|
6 | |
The __________ cellular phone system will provide universal personal communication. |
|
| | A) | first-generation |
| | B) | second-generation |
| | C) | third-generation |
| | D) | none of the above |
|
7 | |
In a ______ handoff, a mobile station only communicates with one base station. |
|
| | A) | hard |
| | B) | soft |
| | C) | medium |
| | D) | none of the above |
|
8 | |
In a ______ handoff, a mobile station can communicate with two base stations at the same time. |
|
| | A) | hard |
| | B) | soft |
| | C) | medium |
| | D) | none of the above |
|
9 | |
_______ is an analog cellular phone system using FDMA. |
|
| | A) | AMPS |
| | B) | D-AMPS |
| | C) | GSM |
| | D) | none of the above |
|
10 | |
AMPS operates in the ISM _____ band. |
|
| | A) | 800-MHz |
| | B) | 900-MHz |
| | C) | 1800-MHz |
| | D) | none of the above |
|
11 | |
In AMPS, each band is divided into ______ channels. |
|
| | A) | 800 |
| | B) | 900 |
| | C) | 1000 |
| | D) | none of the above |
|
12 | |
AMPS has a frequency reuse factor of _______. |
|
| | A) | 1 |
| | B) | 3 |
| | C) | 5 |
| | D) | 7 |
|
13 | |
AMPS uses ______ to divide each 25-MHz band into channels. |
|
| | A) | FDMA |
| | B) | TDMA |
| | C) | CDMA |
| | D) | none of the above |
|
14 | |
D-AMPS uses ______ to divide each 25-MHz band into channels. |
|
| | A) | FDMA |
| | B) | TDMA |
| | C) | CDMA |
| | D) | both (a) and (b) |
|
15 | |
GSM allows a reuse factor of _______. |
|
| | A) | 1 |
| | B) | 3 |
| | C) | 5 |
| | D) | 7 |
|
16 | |
GSM is a digital cellular phone system using ________. |
|
| | A) | FDMA |
| | B) | TDMA |
| | C) | CDMA |
| | D) | both (a) and (b) |
|
17 | |
IS-95 is based on ____________. |
|
| | A) | FDMA |
| | B) | CDMA |
| | C) | DSSS |
| | D) | all of the above |
|
18 | |
IS-95 uses the ISM _______band. |
|
| | A) | 800-MHz |
| | B) | 900-MHz |
| | C) | 1900-MHz |
| | D) | either (a) or (c) |
|
19 | |
IS-95 uses the _______ satellite system for synchronization. |
|
| | A) | GPS |
| | B) | Teledesic |
| | C) | Iridium |
| | D) | none of the above |
|
20 | |
In an IS-95 system, the frequency-reuse factor is normally _____. |
|
| | A) | 1 |
| | B) | 3 |
| | C) | 5 |
| | D) | 7 |
|
21 | |
In the third generation of cellular phones, _______ uses W-CDMA. |
|
| | A) | IMT-DS |
| | B) | IMT-MC |
| | C) | IMT-TC |
| | D) | IMT-SC |
|
22 | |
In the third generation of cellular phones, ________ uses CDMA2000. |
|
| | A) | IMT-DS |
| | B) | IMT-MC |
| | C) | IMT-TC |
| | D) | IMT-SC |
|
23 | |
In the third generation of cellular phones, ______ uses a combination of W-CDMA and TDMA. |
|
| | A) | IMT-DS |
| | B) | IMT-MC |
| | C) | IMT-TC |
| | D) | IMT-SC |
|
24 | |
In the third generation of cellular phones, _______ uses TDMA. |
|
| | A) | IMT-DS |
| | B) | IMT-MC |
| | C) | IMT-TC |
| | D) | IMT-SC |
|
25 | |
The period of a satellite, the time required for a satellite to make a complete trip around the Earth, is determined by _________ law. |
|
| | A) | Kepler's |
| | B) | Newton's |
| | C) | Ohm's |
| | D) | none of the above |
|
26 | |
The signal from a satellite is normally aimed at a specific area called the _________. |
|
| | A) | path |
| | B) | effect |
| | C) | footprint |
| | D) | none of the above |
|
27 | |
There is (are) _____ orbit(s) for a GEO satellite. |
|
| | A) | one |
| | B) | two |
| | C) | many |
| | D) | none of the above |
|
28 | |
MEO satellites are located at altitudes between km. |
|
| | A) | 3000 and 5000 |
| | B) | 5000 and 10,000 |
| | C) | 5000 and 15,000 |
| | D) | none of the above |
|
29 | |
LEO satellites are normally below an altitude of ________ km. |
|
| | A) | 1000 |
| | B) | 2000 |
| | C) | 3000 |
| | D) | none of the above |
|
30 | |
______ is based on a principle called trilateration. |
|
| | A) | GPS |
| | B) | Teledesic |
| | C) | Iridium |
| | D) | none of the above |
|
31 | |
Low-Earth-orbit (LEO) satellites have _____ orbits. |
|
| | A) | equatorial |
| | B) | polar |
| | C) | inclined |
| | D) | none of the above |
|
32 | |
A GEO is at the ________ orbit and revolves in phase with Earth. |
|
| | A) | equatorial |
| | B) | polar |
| | C) | inclined |
| | D) | none of the above |
|
33 | |
GPS satellites are ________ satellites. |
|
| | A) | GEO |
| | B) | MEO |
| | C) | LEO |
| | D) | none of the above |
|
34 | |
________ satellites provide time and location information for vehicles and ships. |
|
| | A) | GPS |
| | B) | Iridium |
| | C) | Teledesic |
| | D) | none of the above |
|
35 | |
Iridium satellites are ________satellites. |
|
| | A) | GEO |
| | B) | MEO |
| | C) | LEO |
| | D) | none of the above |
|
36 | |
________ satellites can provide direct universal voice and data communications for handheld terminals. |
|
| | A) | GPS |
| | B) | Iridium |
| | C) | Teledesic |
| | D) | none of the above |
|
37 | |
Teledesic satellites are _________satellites. |
|
| | A) | GEO |
| | B) | MEO |
| | C) | LEO |
| | D) | none of the above |
|
38 | |
________ satellites will provide universal broadband Internet access. |
|
| | A) | GPS |
| | B) | Iridium |
| | C) | Teledesic |
| | D) | none of the above |