Question

Q.N. 1:-

In an unguided electromagnetic telecommunications link, acoustic waves are transmitted and received by antennas operating at radio frequency (RF) frequencies.

True

False

Q.N. 2:-

What is the best reason why we view signals in the time and frequency domains?

		a. the time domain tells us the bandwidth of the information signal, while the frequency domain gives us an idea of how often information is sent
		b. time domain signals show us the amplitude of the signal over time, while the frequency domains tells us which frequencies the signal is comprised of (i.e., frequency bandwidth)
		c. viewing the signal in the time domain is critical since it tells us the frequency and periodicity of the information signal, while the frequency domain gives us information regarding the amplitude of the signal over time
		d. None of the above are good reasons

Q.N. 3:-

Select the correct statement(s) regarding periodic, aperiodic signals and frequency bandwidth.

		a. a signal containing information will typically appear as an aperiodic wave in the time domain, and will have an associated bandwidth in the frequency domain
		b. information signals will always appear as periodic waves in the time domain, and will be associated with a bandwidth in the frequency domain
		c. information signals will always appear as a periodic wave in the time domain, but will never be associated with a bandwidth in the frequency domain
		d. all of the statements are correct

Q.N. 4:-

The Transport Layer packet/segment must contain source and destination IP addresses, like the Network and Data Link layers packet/frames.

True

False

Answer 1

1.

In an unguided electromagnetic telecommunications link, acoustic waves are transmitted and received by antennas operating at radio frequency (RF) frequencies.

True

2.

time domain signals show us the amplitude of the signal over time, while the frequency domains tells us which frequencies the signal is comprised of (i.e., frequency bandwidth).

Option b

3.

a signal containing information will typically appear as an aperiodic wave in the time domain, and will have an associated bandwidth in the frequency domain

Option a

4.

The Transport Layer packet/segment must contain source and destination IP addresses, like the Network and Data Link layers packet/frames.

False