____ for error control is becoming a mode of operation for some modern wide area network transmission techniques.?

A. ?Returning a message
B. ?Toss the frame/packet
C. ?Correcting the error
D. ?Fixing the error


Answer: B

Computer Science & Information Technology

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Choose the correct verb to agree in number with the subject of the following sentence.? The number of paying subscribers __________ doubled in the past four years.

A. ?has B. have?

Computer Science & Information Technology

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A. A certification demonstrated your knowledge in a specific area to employers or potential employers. B. Authorized testing centers provide most certification exams for a fee. C. If you do not pass an exam, you may have to pay the fee again to retake it. D. Most certification programs require academic coursework.

Computer Science & Information Technology