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- CWTS PW0-071
76.
What is the term defining the number of times a cycle of an RF signal will oscillate in one
second?
- A.Phase
- B.Frequency
- C.Amplitude
- D.Wavelength
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| Frequency is the number of times in one second a signal will oscillate. Phase is a shift, amplitude is height, and wavelength is a distance of one cycle. |
77.
How many nonoverlapping channels are available in the unlicensed 2.4 GHz ISM band?
- A.1
- B.3
- C.6
- D.11
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| There are three nonoverlapping channels in the 2.4 GHz ISM band. Fourteen channels are available in this band. The locale will determine which channels can be used. |
78.
The capacity of an access point is dependent on which factors? (Choose two.)
- A.Number of users
- B.Channel reuse
- C.Co-location
- D.Software applications
- E.Frequency
- Answer & Explanation
- Report
- Answer & Explanation
- Report
Answer : [A, D]
Explanation :
Explanation :
| The capacity of an access point is dependent upon the number of users and software applications in use. Too many users or too many bandwidth-intensive applications will affect the performance of an access point. |
79.
When an RF signal passes between media of different densities and may change speeds and
bend, the behavior is known as:
- A.Refraction
- B.Reflection
- C.Scattering
- D.Diffraction
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| Refraction occurs when a signal changes speed and bends when passing between mediums of different densities. Refl ection bounces off a smooth surface, diffraction will pass around, and scattering bounces off an uneven surface. |
80.
What two devices use RF to communicate? (Choose two.)
- A.Transmitter
- B.Transistor
- C.Reactor
- D.Reflector
- E.Receiver
- Answer & Explanation
- Report
Answer : [A, E]
Explanation :
Explanation :
| RF communications require a transmitter and receiver. A transistor is an electronic component; a reactor does not exist in RF. |
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