Questions
21
In _______ transmission, the channel capacity is shared by both communicating devices at all times.
Answer: full-duplex
22
________ is an idea or concept that is a precursor to an Internet standard.
Answer: RFC
24
_______ refers to the structure or format of the data, meaning the order in which they are presented.
Answer: Syntax
25
In a _______ connection, more than two devices can share a single link.
Answer: multipoint
26
The _______ is the physical path over which a message travels.
Answer: Medium
28
Communication between a computer and a keyboard involves ______________ transmission.
Answer: simplex
29
In the original ARPANET, _______ were directly connected together.
Answer: IMPs
30
Which organization has authority over interstate and international commerce in the communications field?
Answer: FCC
31
In a ________ connection, three or more devices share a link.
Answer: multipoint
32
In a frequency-domain plot, the horizontal axis measures the ________.
Answer: frequency
33
For a ______ channel, the Nyquist bit rate formula defines the theoretical maximum bit rate.
Answer: noiseless
34
If the available channel is a ____ channel, we cannot send a digital signal directly to the channel.
Answer: bandpass
36
Given two sine waves A and B, if the frequency of A is twice that of B, then the period of B is ________ that of A.
Answer: twice
37
_______ describes the position of the waveform relative to time 0.
Answer: Phase
38
________ is a type of transmission impairment in which an outside source such as crosstalk corrupts a signal.
Answer: Noise
39
The _____ of a composite signal is the difference between the highest and the lowest frequencies contained in that signal.
Answer: bandwidth
40
A periodic signal completes one cycle in 0.001 s. What is the frequency?
Answer: 1 KHz
