The signal given below is __________.

		Digital periodic signal
		analog periodic signal
		Digital aperiodic signal
		Analog aperiodic signal

Multiplexing is the set of techniques that allows the simultaneous transmission of _______.

		singular signals across a single data link
		multiples signals across a multiple data links
		multiple signals across a single data link
		singular signals across a multiple data links.

On the process of communication between a sender and receiver, the receiver received a duplicate frame. Which of the following layer of OSI model handles the error now?

		Transport
		Data Link
		Network
		Physical

Which of the following is the most important resources while doing data communication?

		bandwidth
		QoS
		media
		protocol

Amplitude Time a. Time domain