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| 1 | |
_______ is a first-generation cellular phone system. |
| | A) | AMPS |
| | B) | D-AMPS |
| | C) | GSM |
| | D) | None of the choices are correct |
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| 2 | |
__________ is a second-generation cellular phone system. |
| | A) | AMPS |
| | B) | D-AMPS |
| | C) | GSM |
| | D) | None of the choices are correct |
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| 3 | |
____________ is a digital version of AMPS. |
| | A) | GSM |
| | B) | D-AMPS |
| | C) | IS-95 |
| | D) | None of the choices are correct |
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| 4 | |
___________ is a second-generation cellular phone system used in Europe. |
| | A) | GSM |
| | B) | D-AMPS |
| | C) | IS-95 |
| | D) | None of the choices are correct |
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| 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 choices are correct |
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| 6 | |
The __________ cellular phone system provided universal personal communication. |
| | A) | first-generation |
| | B) | second-generation |
| | C) | third-generation |
| | D) | None of the choices are correct |
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| 7 | |
In a ______ handoff, a mobile station only communicates with one base station. |
| | A) | hard |
| | B) | soft |
| | C) | medium |
| | D) | None of the choices are correct |
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| 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 choices are correct |
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| 9 | |
In AMPS, each band is divided into ______ channels. |
| | A) | 800 |
| | B) | 900 |
| | C) | 1000 |
| | D) | None of the choices are correct |
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| 10 | |
AMPS has a frequency-reuse factor of _______. |
| | A) | 1 |
| | B) | 3 |
| | C) | 5 |
| | D) | 7 |
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| 11 | |
AMPS uses ______ to divide each 25-MHz band into channels. |
| | A) | FDMA |
| | B) | TDMA |
| | C) | CDMA |
| | D) | None of the choices are correct |
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| 12 | |
GSM allows a reuse factor of _______. |
| | A) | 1 |
| | B) | 3 |
| | C) | 5 |
| | D) | 7 |
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| 13 | |
IS-95 uses the ISM _______band. |
| | A) | 800-MHz |
| | B) | 900-MHz |
| | C) | 1900-MHz |
| | D) | either 800-MHz or 1900-MHz |
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| 14 | |
IS-95 uses the _______ satellite system for synchronization. |
| | A) | GPS |
| | B) | Teledesic |
| | C) | Iridium |
| | D) | None of the choices are correct |
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| 15 | |
In an IS-95 system, the frequency-reuse factor is normally _____. |
| | A) | 1 |
| | B) | 3 |
| | C) | 5 |
| | D) | 7 |
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| 16 | |
In the third generation of cellular phones, _______ uses W-CDMA. |
| | A) | IMT-DS |
| | B) | IMT-MC |
| | C) | IMT-TC |
| | D) | IMT-SC |
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| 17 | |
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 |
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| 18 | |
In the third generation of cellular phones, _______ uses only TDMA. |
| | A) | IMT-DS |
| | B) | IMT-MC |
| | C) | IMT-TC |
| | D) | IMT-SC |
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| 19 | |
To increase efficiency, capacity, and scalability, new access techniques are being considered such as _______ for 4G cellular phones. |
| | A) | OFDMA |
| | B) | IFDMA |
| | C) | MC-CDMA |
| | D) | All choices are correct |
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| 20 | |
The fourth-generation cellular phones use a _____________. |
| | A) | hardware-defined radio |
| | B) | software-defined radio |
| | C) | hardware- and software-defined radio |
| | D) | None of choices are correct. |
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| 21 | |
The fourth-generation cellular phones use _____________ antenna. |
| | A) | MIMO |
| | B) | MU-MIMO |
| | C) | MIMO and MU-MIMO |
| | D) | None of choices are correct |
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| 22 | |
WiMax is an IEEE standard for a ________ wireless system. |
| | A) | fixed |
| | B) | mobile |
| | C) | both fixed and mobile |
| | D) | None of choices are correct. |
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| 23 | |
WiMax aims to _____________. |
| | A) | replace WiFi |
| | B) | compete with WiFi |
| | C) | provide the "last mile" broadband wireless access alternative to cable and DSL |
| | D) | None of choices are correct |
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| 24 | |
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 choices are correct |
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| 25 | |
The signal from a satellite is normally aimed at a specific area called the _________. |
| | A) | path |
| | B) | effect |
| | C) | footprint |
| | D) | None of the choices are correct |
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| 26 | |
There is (are) _____ orbit(s) for a GEO satellite. |
| | A) | one |
| | B) | two |
| | C) | three |
| | D) | None of the choices are correct |
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| 27 | |
______ is based on a principle called trilateration. |
| | A) | GPS |
| | B) | Teledesic |
| | C) | Iridium |
| | D) | None of the choices are correct |
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| 28 | |
Low-Earth-orbit (LEO) satellites have _____ orbits. |
| | A) | equatorial |
| | B) | polar |
| | C) | inclined |
| | D) | None of the choices are correct |
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| 29 | |
A GEO has ________ orbit and revolves in phase with Earth. |
| | A) | equatorial |
| | B) | polar |
| | C) | inclined |
| | D) | None of the choices are correct |
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| 30 | |
GPS satellites are ________ satellites. |
| | A) | GEO |
| | B) | MEO |
| | C) | LEO |
| | D) | None of the choices are correct |
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| 31 | |
________ satellites provide time and location information for vehicles and ships. |
| | A) | GPS |
| | B) | Iridium |
| | C) | Teledesic |
| | D) | None of the choices are correct |
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