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GSM Technology Quiz

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Questions and Answers

What does GSM stand for?

Global System for Mobile (correct)
Global Society for Mobile
General Society for Mobile
General System for Mobile

In which year was the GSM standardization group established?

1990
1970
1982 (correct)
1980

What technique does GSM use for transmitting signals?

Code Division Multiple Access (CDMA)
Time Division Multiple Access (TDMA) (correct)
Space Division Multiple Access (SDMA)
Frequency Division Multiple Access (FDMA)

Which bands does GSM operate on in most parts of the world?

900 MHz and 1800 MHz (D) Signup and view all the answers

What is the market share of GSM in the world's digital cellular subscribers?

More than 70% (B) Signup and view all the answers

What is the basic teleservice supported by GSM?

Telephony (A) Signup and view all the answers

Which of the following is a data service offered by GSM?

Videotext access (D) Signup and view all the answers

What are HSCSD and GPRS related to in the context of GSM?

Data transfer rates (D) Signup and view all the answers

Which service allows a mobile subscriber to establish a multiparty conversation?

Conferencing (C) Signup and view all the answers

What type of services are caller identification and call forwarding examples of in GSM?

Supplementary services (A) Signup and view all the answers

What is one of the traditional applications of satellites, as mentioned in the text?

Weather forecasting (C) Signup and view all the answers

Which technology competes with cable in many places, as mentioned in the text?

Satellite TV broadcast (C) Signup and view all the answers

What was one of the earliest applications of satellites, as mentioned in the text?

Military communication links (A) Signup and view all the answers

What is the global positioning system (GPS) nowadays well-known and available for everyone used for?

Personal navigation (D) Signup and view all the answers

What benefit do satellites offer for mobile communications, as mentioned in the text?

Global coverage without wiring costs for base stations (D) Signup and view all the answers

What is the equation for the distance of a satellite to the center of the earth in a stable circular orbit?

The distance $r = (g·R^2/(2 ext{π}·f)^2)^{1/3}$ (D) Signup and view all the answers

What is the inclination angle δ?

The angle between the equatorial plane and the plane described by the satellite orbit (A) Signup and view all the answers

At what distance do Geostationary (or geosynchronous) earth orbit (GEO) satellites operate?

Almost 36,000 km (C) Signup and view all the answers

What is the purpose of the elevation angle ε?

To define the area on earth where the signals of the satellite can be received (B) Signup and view all the answers

What is the equation for the centrifugal force Fc trying to pull the satellite away in a stable circular orbit?

$m·r·(ω^2)$ (B) Signup and view all the answers

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