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31.
What RF component is responsible for generating the AC signal?
- A.Antenna
- B.Receiver
- C.Transmitter
- D.Transponder
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| The transmitter generates the AC signal and modifies it by using a modulation technique to encode the data into the signal. |
32.
A point source that radiates RF signal equally in all directions is known as what?
- A.Omnidirectional signal generator
- B.Omnidirectional antenna
- C.Intentional radiator
- D.Nondirectional transmitter
- E.Isotropic radiator
- Answer & Explanation
- Report
Answer : [E]
Explanation :
Explanation :
| An isotropic radiator is also known as a point source. |
33.
When calculating the link budget and system operating margin of a point-to-point outdoor
WLAN bridge link, what factors should be taken into account? (Choose all that apply.)
- A.Distance
- B.Receive sensitivity
- C.Transmit amplitude
- D.Antenna height
- E.Cable loss
- F.Frequency
- Answer & Explanation
- Report
Answer : [A, B, C, E, F]
Explanation :
Explanation :
| When radio communications are deployed, a link budget is the sum of all gains and losses from the transmitting radio, through the RF medium, to the receiver radio. Link budget calculations include original transmit gain and passive antenna gain. All losses must be accounted for, including free space path loss. Frequency and distance are needed to calculate free space path loss. The height of an antenna has no significance when calculating a link budget; however, the height could affect the Fresnel and blockage to it. |
34.
The sum of all the components from the transmitter to the antenna, not including the
antenna, is known as what? (Choose two.)
- A.IR
- B.Isotropic radiator
- C.EIRP
- D.Intentional radiator
- Answer & Explanation
- Report
Answer : [A, D]
Explanation :
Explanation :
| IR is the abbreviation for intentional radiator. The components making up the IR include the transmitter, all cables and connectors, and any other equipment (grounding, lightning arrestors, amplifiers, attenuators, and so forth) between the transmitter and the antenna. The power of the IR is measured at the connecter that provides the input to the antenna. |
35.
The highest RF signal strength that is transmitted from an antenna is known as what?
- A.Equivalent isotropically radiated power
- B.Transmit sensitivity
- C.Total emitted power
- D.Antenna radiated power
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| Equivalent isotropically radiated power, also known as EIRP, is a measure of the strongest signal that is radiated from an antenna. |
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