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

Q. Most data communications involving telegraph lines use:

View solution

Q. Telecommunications networks come in a wide range of speed and capacity capabilities. Select the best fit for answer:

View solution

Q. What frequency range is used for TV transmission and low power microwave applications?

View solution

Q. Which of the following statement is correct ?

View solution

Q. In communication satellite, multiple repeaters are known as

View solution

Q. We can receive data either through our television aerial or down our telephone lines and display this data on our television screen. What is the general name given to this process?

View solution

Q. The frequency range : 300 kHz to 3 MHz is used for

View solution

Q. Modulation in which the two binary values are represented by two different amplitudes of the carrier frequency is known as

View solution