". VdoTips: Networking Multiple Choice Questions and Answers 78

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Networking Multiple Choice Questions and Answers 78

386. Which of the following does not allow multiple users or devices to share one communication line?
(A)Doubleplexer.
(B)Concentrator.
(C)Multiplexer.
(D)Controller.
387. After coding a document into a digital signal, it can be sent by telephone, telex or satellite to the receiver where the signal is decoded and an exact copy of the original document is made. What is it called?
(A)Telex.
(B)Electronic mail.
(C)Facsimile.
(D)Word processor.
388. Videotex is a combination of _______
(A)computer technology.
(B)television.
(C)computers.
(D)all of the above.
389. Usually it takes 10 bits to represent one character. How many characters can be transmitted at a speed of 1200 bps?
(A)10
(B)12
(C)20
(D)1200
390. Who invented the modem?
(A)Wang Laboratories.
(B)AT & T.
(C)Apple computers.
(D)Satyam conferencing.