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Total Questions: 20
1. What is one of the two general types of spread-spectrum modulation?
Correct Answer is : FHSS
2. What is the networking device used to forward packets on a packet-switching network?
Correct Answer is : Router
3. What is propagated through the air and received by an antenna to transmit data signals?
Correct Answer is : Radio waves
4. What signal transmission method intersperses message segments from multiple sessions into a single medium?
Correct Answer is : Multiplexing
5. What is the term used to describe the height of a radio wave?
Correct Answer is : Amplitude
6. AM manipulates a transmitted radio wave by varying its _______.
Correct Answer is : Amplitude
7. FM manipulates a transmitted radio wave by varying its ______.
Correct Answer is : Frequency
8. Megahertz is used to state the ______ of a radio wave.
Correct Answer is : Frequency
9. Which of the RF multiplexing methods uses times slices to carry multiple data streams on a single carrier?
Correct Answer is : TDM
10. Which of the following is not an example of electromagnetic radiation using waveform?
Correct Answer is : Audio
11. The general rule of __________ is the inverse-square law, which measures an electromagnetic wave's strength relative to the distance over which it is transmitted.
Correct Answer is : Propagation
12. The __________ of a waveform represents the number of wave peaks that pass a given point in space in one second.
Correct Answer is : Frequency
13. __________ measures how much ahead or behind a wave is to a reference frequency of the same wavelength.
Correct Answer is : Phase
14. Multipath propagation happens when a __________ cannot take a clear and direct path between a transmitter and a receiver.
Correct Answer is : RF signal
15. Your company has Cat 5e copper cable for networking. At what constant propagation speed will the electromagnetic waves travel through this cable?
Correct Answer is : 200,000 kms
16. The __________ is designed to radiate the aura of the electromagnetic field created by the electric current.
Correct Answer is : Antenna
17. __________ communications mode means that it can both transmit and receive, but only one action at a time.
Correct Answer is : Half duplex
18. __________ is the method used to maximize the utilization of a limited transmission medium by interspersing message segments from multiple sessions onto the single medium.
Correct Answer is : Multiplexing
19. __________ multiplexing is used to combine transmitted data from different sources onto a fiber-optic cable link.
Correct Answer is : Wave-division
20. Cable TV using co-axial cable is a common application of __________ multiplexing transmissions.
Correct Answer is : Frequency-division
