If DTX technology is used, the phone does not need to transmit anything during the interval of voice.

If DTX technology is used, the phone does not need to transmit anything during the interval of voice.A . TrueB . FalseView AnswerAnswer: A

September 11, 2019 No Comments READ MORE +

The 1800M GSM bandwidth allocated by the country to China Unicom is?

The 1800M GSM bandwidth allocated by the country to China Unicom is?A . 5MHzB . 10MHzC . 8MHzD . 6MHzView AnswerAnswer: B

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How is the antenna gain obtained?

How is the antenna gain obtained?A . Using power amplifier in an antenna systemB . Make the antenna radiation more concentratedC . Use high efficiency antenna feedersD . Equipment using low standing wave ratioView AnswerAnswer: B

September 9, 2019 No Comments READ MORE +

CDMA and GSM communication systems belong to cellular mobile communication systems, and which one belongs to cellular mobile communication systems?

CDMA and GSM communication systems belong to cellular mobile communication systems, and which one belongs to cellular mobile communication systems?A . CDMAB . GSMC . Both areD . neither isView AnswerAnswer: C

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What response can you expect for each event type?

DRAG DROP Your company uses Microsoft 365 with a business support plan. You need to identify Service Level Agreements (SLAs) from Microsoft for the support plan. What response can you expect for each event type? To answer, drag the appropriate responses to the correct event types. Each response may be...

September 7, 2019 No Comments READ MORE +

Mobile phone first access to mobile communication network through which device?

Mobile phone first access to mobile communication network through which device?A . Base stationB . Base station controllerC . SwitchD . Location registerView AnswerAnswer: A

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In the mobile communication system, the diffraction capability and penetration capability of the 900M signal are better than the 1800M signal.

In the mobile communication system, the diffraction capability and penetration capability of the 900M signal are better than the 1800M signal.A . TrueB . FalseView AnswerAnswer: B

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The bandwidth of a frequency point of GSM is?

The bandwidth of a frequency point of GSM is?A . 200KHzB . 30KHzC . 3.75MHzD . 1.25MHzView AnswerAnswer: A

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GSM uses which multiple access multiplexing?

GSM uses which multiple access multiplexing?A . Time division multiplexing and frequency division multiplexingB . Frequency division multiplexing and code division multiplexingC . Code division multiplexing and space division multiplexingD . Space division multiplexing and time division multiplexingView AnswerAnswer: A

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E-GSM frequency band means:

E-GSM frequency band means:A . 890-915MHz, 935-960MHzB . 876-915MHz, 921-960MHzC . 880-915MHz, 925-960MHzD . 824-849MHz, 869-894MHzView AnswerAnswer: C

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