Q421
Open questionWhich multiplexing technique shifts each signal to a different carrier frequency?
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Q422
Open questionWhich of the following protocol is connection-oriented?
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Q423
Open questionThe loss in signal power as light travels down the fiber is called
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Q424
Open questionOperating system functions may include
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Q425
Open questionWhich layer of international standard organization's OSI model is responsible for creating and recognizing frame boundaries?
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Q426
Open questionWhich of the following might be used by a company to satisfy its growing communications needs?
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Q427
Open questionDifferent computers are connected to a LAN by a cable and a/an
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Q428
Open questionThe Token-Ring architecture was developed for a more efficient way to determine who should be transmitting at any one time. With Ethernet, collisions may take place, causing the transmitting computers to have to retransmit their data. The use of token guarantees that only one computer can transmit at a time. What happens as the network increases in size? Choose the best answer
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Q429
Open questionA characteristic of a multiprogramming system is:
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Q430
Open questionWhen a host knows its physical address but not its IP address, it can use _____.
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Q431
Open questionWhat is the name given to the exchange of control signals which is necessary for establishing a connection between a modem and a computer at one end of a line and another modem and computer at the other end?
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Q432
Open questionA communications medium that uses pulses of laser light in glass fibers. Select the best fit for answer:
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Q433
Open questionAfter you have verified that TCP/IP is installed correctly, what is the next step in verifying the TCP/IP configuration?
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Q434
Open questionWhich utility is useful for troubleshooting NetBIOS name resolution problems?
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Q435
Open questionThe EIA-232 interface has _____ pins.
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Q436
Open questionIn OSI model, which of the following layer transforms information from machine format into that understandable by user
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Q437
Open questionThe channel in the data communication model can be
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Q438
Open questionWhich of the following is an important characteristic of LAN?
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Q439
Open questionWhich of the following is a wrong example of network layer:
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Q440
Open questionA 2000-character text file has to be transmitted by using a 1,200 baud modem. Can you tell how long will it take?
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