1.	In a synchronous modem, the digital-to-analog converter transmits signal to the ?
	equalizer
	modulator
	demodulator
	terminal
	Answer: modulator Explanation: modulator In a synchronous modem, the digital-to-analog converter (DAC) is used to convert the digital data signal into an analog waveform that can be transmitted over an analog communication channel, such as a telephone line.
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2.	A _________ typically connects personal computers within a very limited geographical area, usually within a single building ?
	LAN
	BAN
	TAN
	NAN
	Answer: LAN Explanation: A LAN typically connects personal computers within a very limited geographical area, usually within a single building
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3.	Computers send and receive data in the form of _________ signals ?
	Analog
	Digital
	Modulated
	Demodulated
	Answer: Digital Explanation: Digital signals are used by computers to send and receive data.
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