Question 1

Which type of device is considered active device because it adds power to a signal?

Accepted Answer

A)  mixer 
B)  filter 
C)  antenna 
D)  amplifier 
A)  mixer 
B)  filter 
C)  antenna 
D)  amplifier D

Question 2

TDMA was developed to overcome the problem of crosstalk.

Accepted Answer

A) True 
 B)False  True

Question 3

What problem can a directional antenna reduce in severity?

Accepted Answer

A)  reflective attenuation 
B)  multipath distortion 
C)  phase misalignment 
D)  electro-magnetic interference 
A)  reflective attenuation 
B)  multipath distortion 
C)  phase misalignment 
D)  electro-magnetic interference B

Question 4

What is an amplifier and why is it a crucial component in a radio system?

Accepted Answer

An amplifier increases the amplitude of

Question 5

____________________ transmission is typically used in consumer devices such as CB radios or walkie talkies where you have to hold down a button while speaking.

Accepted Answer

half-duple

Question 6

List the three types of RF filters.

Accepted Answer

low-pass,

Question 7

MATCHING
-unregulated radio frequency bands that are available in the United States to any users without a license

Accepted Answer

A) circuit switching 
B) directional antenna 
C) full-duplex transmission 
D) half-duplex transmission 
E) harmonics
F)license exempt spectrum
G)packet switching
H)signal-to-noise ratio
I)simplex transmission
J)switching 
A) circuit switching 
B) directional antenna 
C) full-duplex transmission 
D) half-duplex transmission 
E) harmonics
F)license exempt spectrum
G)packet switching
H)signal-to-noise ratio
I)simplex transmission
J)switching

Question 8

What is multipath distortion?

Accepted Answer

As a radio signal is transmitted, the el

Question 9

What are two advantages that TDMA has over FDMA?

Accepted Answer

TDMA has two significant advantages over

Question 10

Objects in the path of a radio signal can cause which of the following?

Accepted Answer

A)  crosstalk 
B)  amplification 
C)  EMI 
D)  attenuation 
A)  crosstalk 
B)  amplification 
C)  EMI 
D)  attenuation

Question 11

MATCHING
-transmission that occurs in only one direction

Accepted Answer

A) circuit switching 
B) directional antenna 
C) full-duplex transmission 
D) half-duplex transmission 
E) harmonics
F)license exempt spectrum
G)packet switching
H)signal-to-noise ratio
I)simplex transmission
J)switching 
A) circuit switching 
B) directional antenna 
C) full-duplex transmission 
D) half-duplex transmission 
E) harmonics
F)license exempt spectrum
G)packet switching
H)signal-to-noise ratio
I)simplex transmission
J)switching

Question 12

Why are filters found in transmitters?

Accepted Answer

Filters are also found in tran

Question 13

What can take place when signal strength falls close to or below the level of noise?

Accepted Answer

A)  SNR 
B)  interference 
C)  crosstalk 
D)  attenuation 
A)  SNR 
B)  interference 
C)  crosstalk 
D)  attenuation

Question 14

MATCHING
-an antenna that radiates the electromagnetic waves in one direction only

Accepted Answer

A) circuit switching 
B) directional antenna 
C) full-duplex transmission 
D) half-duplex transmission 
E) harmonics
F)license exempt spectrum
G)packet switching
H)signal-to-noise ratio
I)simplex transmission
J)switching 
A) circuit switching 
B) directional antenna 
C) full-duplex transmission 
D) half-duplex transmission 
E) harmonics
F)license exempt spectrum
G)packet switching
H)signal-to-noise ratio
I)simplex transmission
J)switching

Question 15

A high-pass filter allows all signals above a minimum threshold to pass through.

Accepted Answer

A) True 
 B)False

Question 16

What is the purpose of a mixer? Include a discussion of sidebands in your answer.

Accepted Answer

The purpose of a mixer is to combine two

Question 17

Which standards body deals with user-premises equipment and satellite communications?

Accepted Answer

A)  IAB 
B)  TIA 
C)  IETF 
D)  ISCO 
A)  IAB 
B)  TIA 
C)  IETF 
D)  ISCO

Question 18

MATCHING
-a switching technique in which a dedicated and direct physical connection is made between two transmitting devices

Accepted Answer

A) circuit switching 
B) directional antenna 
C) full-duplex transmission 
D) half-duplex transmission 
E) harmonics
F)license exempt spectrum
G)packet switching
H)signal-to-noise ratio
I)simplex transmission
J)switching 
A) circuit switching 
B) directional antenna 
C) full-duplex transmission 
D) half-duplex transmission 
E) harmonics
F)license exempt spectrum
G)packet switching
H)signal-to-noise ratio
I)simplex transmission
J)switching

Question 19

The sidebands of a frequency carrier are best described as which of the following?

Accepted Answer

A)  the sum of the carrier signal and the highest value of the mixer output 
B)  the difference between the highest and lowest input frequency 
C)  the average of the high and low values of the input signal 
D)  the sum and difference of the highest input signal and carrier frequency 
A)  the sum of the carrier signal and the highest value of the mixer output 
B)  the difference between the highest and lowest input frequency 
C)  the average of the high and low values of the input signal 
D)  the sum and difference of the highest input signal and carrier frequency

Question 20

Which of the following is a type of RF filter?

Accepted Answer

A)  top-pass 
B)  mid-pass 
C)  bandpass 
D)  medipass 
A)  top-pass 
B)  mid-pass 
C)  bandpass 
D)  medipass

Which type of device is considered active device because it adds power to a signal?

TDMA was developed to overcome the problem of crosstalk.

What problem can a directional antenna reduce in severity?

What is an amplifier and why is it a crucial component in a radio system?

____________________ transmission is typically used in consumer devices such as CB radios or walkie talkies where you have to hold down a button while speaking.

List the three types of RF filters.

MATCHING -unregulated radio frequency bands that are available in the United States to any users without a license

What is multipath distortion?

What are two advantages that TDMA has over FDMA?

Objects in the path of a radio signal can cause which of the following?

MATCHING -transmission that occurs in only one direction

Why are filters found in transmitters?

What can take place when signal strength falls close to or below the level of noise?

MATCHING -an antenna that radiates the electromagnetic waves in one direction only

A high-pass filter allows all signals above a minimum threshold to pass through.

What is the purpose of a mixer? Include a discussion of sidebands in your answer.

Which standards body deals with user-premises equipment and satellite communications?

MATCHING -a switching technique in which a dedicated and direct physical connection is made between two transmitting devices

The sidebands of a frequency carrier are best described as which of the following?

Which of the following is a type of RF filter?

Introduction to Wireless Communications

Wireless Data Transmission

How Antennas Work

Wireless Personal Area Networks

High-Rate Wireless Personal Area Networks

Low-Speed Wireless Local Area Networks

High-Speed Wlans and Wlan Security

Wireless Metropolitan Area Networks

Wireless Wide Area Networks

Radio Frequency Identification and Near-Field Communication

Wireless Communications in Business

Filters

Exam 3: Radio Frequency Communications

Which type of device is considered active device because it adds power to a signal?

TDMA was developed to overcome the problem of crosstalk.

What problem can a directional antenna reduce in severity?

What is an amplifier and why is it a crucial component in a radio system?

____________________ transmission is typically used in consumer devices such as CB radios or walkie talkies where you have to hold down a button while speaking.

List the three types of RF filters.

MATCHING -unregulated radio frequency bands that are available in the United States to any users without a license

What is multipath distortion?

What are two advantages that TDMA has over FDMA?

Objects in the path of a radio signal can cause which of the following?

MATCHING -transmission that occurs in only one direction

Why are filters found in transmitters?

What can take place when signal strength falls close to or below the level of noise?

MATCHING -an antenna that radiates the electromagnetic waves in one direction only

A high-pass filter allows all signals above a minimum threshold to pass through.

What is the purpose of a mixer? Include a discussion of sidebands in your answer.

Which standards body deals with user-premises equipment and satellite communications?

MATCHING -a switching technique in which a dedicated and direct physical connection is made between two transmitting devices

The sidebands of a frequency carrier are best described as which of the following?

Which of the following is a type of RF filter?

Introduction to Wireless Communications

Wireless Data Transmission

How Antennas Work

Wireless Personal Area Networks

High-Rate Wireless Personal Area Networks

Low-Speed Wireless Local Area Networks

High-Speed Wlans and Wlan Security

Wireless Metropolitan Area Networks

Wireless Wide Area Networks

Radio Frequency Identification and Near-Field Communication

Wireless Communications in Business

Filters