Q. The _______ technique uses M different carrier frequencies that are modulated by the source signal. At one moment, the sign modulates one carrier frequency; at the next moment, the signal modulates another carrier frequency.

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Q. The ______ technique expands the bandwidth of a signal by replacing each data bit with n bits.

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Q. DMT is a modulation technique that combines elements of _______ and _______.

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Q. Which of the following statement is incorrect?

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Q. A band is always equivalent to ...............

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Q. .................... type of multiplexing are used by transport layer to improve transmission efficiency.

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Q. Multiplexing of different transport connections onto the same network connection is called ................

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Q. A single transport layer connection split and connects the different network connections is called .........................

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Q. Which of the following does not allow multiple users or devices to share one communications line?

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Q. The term 'duplex' refers to the ability of the data receiving stations to echo back a confirming message to the sender. In full duplex data transmission, both the sender and the receiver

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Q. A remote batch-processing operation in which data is solely input to a central computer would require a:

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Q. The communication mode that supports two-way traffic but only one direction at a time is

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Q. Which of the following divides the high speed signal into frequency bands?

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Q. The difference between a multiplexer and a statistical multiplexer is

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Q. A network designer wants to connect 5 routers as point-to-point simplex line. Then the total number of lines required would be

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Q. A communications device that combines transmissions from several I/O devices into one line is a:

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Q. Which of the following technique is used for allocating capacity on a satellite channel using fixed-assignment FDM?

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Q. An ROP would be attached to a

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Q. The communication mode that supports data in both directions at the same time is

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Q. ASK, PSK, FSK, and QAM are examples of _____ encoding.

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