Q. The area of coverage of a satellite radio beam is known as

View solution

Q. In geosynchronous orbit, satellite

View solution

Q. What frequency range is used for microwave communications, satellite and radar?

View solution

Q. A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. If Delta modulation is selected, then how many bits per second are actually sent?

View solution

Q. A 6-MHz channel is used by a digital signaling system utilizing 4-level signals. What is the maximum possible transmission rate?

View solution

Q. Number of bits per symbol used in Baudot code is

View solution

Q. An example of digital, rather than analog, communication is

View solution

Q. A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. Differential PCM with 4 bit relative signal value is used. Then how many bits per second are actually sent?

View solution

Q. Baseband is

View solution

Q. Which of the following frequency ranges is used for AM radio transmission?

View solution

Q. Synchronous protocols

View solution

Q. Which of the following medium is used for broadband local networks?

View solution

Q. Phase shift keying (psk) method is used to modulate digital signals at 9600 bps using 16 levels. Find the line signaling speed (i.e., modulation rate)

View solution

Q. One important characteristic of the hub architecture of ARC-net is

View solution

Q. How much power (roughly) a light-emitting diode can couple into an optical fiber?

View solution

Q. A 2000-character text file has to be transmitted by using a 1,200 baud modem. Can you tell how long will it take?

View solution

Q. The channel in the data communication model can be

View solution

Q. The EIA-232 interface has _____ pins.

View solution

Q. Which of the following signals is not standard RS - 232-C signal?

View solution

Q. A communications medium that uses pulses of laser light in glass fibers. Select the best fit for answer:

View solution