Q. Which of the following is used for modulation and demodulation?

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Q. Which of the following types of channels moves data relatively slowly?

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Q. Which of the following device is used to connect two systems, especially if the systems use different protocols?

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Q. The synchronous modems are more costly than the asynchronous modems because

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Q. The cheapest modems can transmit

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Q. Computers cannot communicate with each other directly over telephone lines because they use digital pulses whereas telephone lines use analog sound frequencies. What is the name of the device which permits digital to analog conversion at the start of a long distance transmission?

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Q. Demodulation is a process of

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Q. Demodulation is the process of

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Q. A devices that links two homogeneous packet-broadcast local networks, is

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Q. The physical layer, in reference to the OSI model, defines

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Q. Which of the following device copies electrical signals from one Ethernet to another?

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Q. For connecting modem, a computer must be equipped with a port that conforms to the RS-232 standard of the Electronic Industries Association of America. What do the letters 'RS' stand for?

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Q. If communication software can be called the "traffic cop" of a micro communication system, then what should the modem be called?

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Q. The fundamental requirements of private-to-public network interconnection methods which need to be provided in gateways is/are

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Q. Interconnected networks need communication processors such as switches, routers, hubs, and gateways. Select the best fit for answer:

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Q. What is the name of the device that converts computer output into a form that can be transmitted over a telephone line?

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Q. Now-a-days computers all over the world can talk to each other. Which is one of the special accessories essential for this purpose?

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Q. Devices on one network can communicate with devices on another network via a

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Q. What is the name of the device that connects two computers by means of a telephone line?

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Q. The _____ layer is the layer closest to the transmission medium.

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