Question 1

What phenomenon is described as multiple copies of a signal that reach a receiver at different times?

Accepted Answer

A)  propagation 
B)  multipath 
C)  multimode 
D)  multi-directional 
A)  propagation 
B)  multipath 
C)  multimode 
D)  multi-directional B

Question 2

Electromagnetic waves travel through space at the speed of light.

Accepted Answer

A) True 
 B)False  True

Question 3

What are the negative effects of delay spread? (Choose all that apply.)

Accepted Answer

A) upfade 
B) amplification 
C) corruption 
D) nulling 
A) upfade 
B) amplification 
C) corruption 
D) nulling C, D

Question 4

One of the units of measurement used to represent RF signal strength is Ohms.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following is an electromagnetic wave?

Accepted Answer

A)  light 
B)  heat 
C)  radio 
D)  All of the above 
A)  light 
B)  heat 
C)  radio 
D)  All of the above

Question 6

RF power gain and loss on a relative scale are measured in ____________________ instead of mW.

Accepted Answer

The answer of RF power gain and loss on a...

Question 7

____________________ shift keying is a binary modulation similar to phase modulation.

Accepted Answer

The answer of ____________________ shift keying is a binary modulation...

Question 8

What is the receive signal strength indicator?

Accepted Answer

The IEEE 802.11 standard defines a mecha

Question 9

Match between columns
                        Premises: bending caused by an object in the path of the transmission
up-and-down wave
rate at which an event occurs
loss of signal strength
distance between the peaks of a wave
equal to current times resistance
occurs when the RF signal comes in contact with elements in the air,such as rain or heavy dust particles
modification to a signal to enable it to carry information
voltage multiplied by the current

Accepted Answer

The Answer of voltage and wavelength and frequency and electrical is...

Question 10

The term ____ describes the rate of electrical flow.

Accepted Answer

A)  voltage 
B)  current 
C)  resistance 
D)  electrical power 
A)  voltage 
B)  current 
C)  resistance 
D)  electrical power

Question 11

Which of the following units is used to measure frequency?

Accepted Answer

A)  decibel 
B)  volt 
C)  hertz 
D)  byte 
A)  decibel 
B)  volt 
C)  hertz 
D)  byte

Question 12

What does a loss of 10 decibels mean with respect to the percent of power loss in mW?

Accepted Answer

A)  50% 
B)  10% 
C)  30% 
D)  90% 
A)  50% 
B)  10% 
C)  30% 
D)  90%

Question 13

Mulitple copies of an RF signal may reach the receiver at different times due to reflection.

Accepted Answer

A) True 
 B)False

Question 14

____ modulation changes the number of waves representing one cycle.

Accepted Answer

A)  Amplitude 
B)  Phase shift 
C)  Frequency 
D)  Phase 
A)  Amplitude 
B)  Phase shift 
C)  Frequency 
D)  Phase

Question 15

Define the signal-to-noise ratio.

Accepted Answer

The signal-to-noise ratio (SNR) is a rat

Question 16

The way in which RG signals travel is referred to as wave ____________.

Accepted Answer

The answer of The way in which RG signals travel...

Question 17

Which of the following are advantages of digital modulation over analog moduation? (Choose all that apply.)

Accepted Answer

A) makes better use of the available spectrum 
B) performs better when interference is present 
C) more power is required to transmit 
D) frequency and phase changes occur continuously 
A) makes better use of the available spectrum 
B) performs better when interference is present 
C) more power is required to transmit 
D) frequency and phase changes occur continuously

Question 18

What is the positive difference in amplitude between two signals?

Accepted Answer

A)  propagation 
B)  gain 
C)  refraction 
D)  delay spread 
A)  propagation 
B)  gain 
C)  refraction 
D)  delay spread

Question 19

Resistance is measured in ohms and the total amount of resistance is called the ____________________.

Accepted Answer

The answer of Resistance is measured in ohms and the...

Question 20

What is the propagation behavior known as multipath?

Accepted Answer

Along with the primary signal,

What phenomenon is described as multiple copies of a signal that reach a receiver at different times?

Electromagnetic waves travel through space at the speed of light.

What are the negative effects of delay spread? (Choose all that apply.)

One of the units of measurement used to represent RF signal strength is Ohms.

Which of the following is an electromagnetic wave?

RF power gain and loss on a relative scale are measured in ____________________ instead of mW.

____________________ shift keying is a binary modulation similar to phase modulation.

What is the receive signal strength indicator?

The term ____ describes the rate of electrical flow.

Which of the following units is used to measure frequency?

What does a loss of 10 decibels mean with respect to the percent of power loss in mW?

Mulitple copies of an RF signal may reach the receiver at different times due to reflection.

____ modulation changes the number of waves representing one cycle.

Define the signal-to-noise ratio.

The way in which RG signals travel is referred to as wave ____________.

Which of the following are advantages of digital modulation over analog moduation? (Choose all that apply.)

What is the positive difference in amplitude between two signals?

Resistance is measured in ohms and the total amount of resistance is called the ____________________.

What is the propagation behavior known as multipath?

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Exam 3: Radio Frequency Fundamentals

What phenomenon is described as multiple copies of a signal that reach a receiver at different times?

Electromagnetic waves travel through space at the speed of light.

What are the negative effects of delay spread? (Choose all that apply.)

One of the units of measurement used to represent RF signal strength is Ohms.

Which of the following is an electromagnetic wave?

RF power gain and loss on a relative scale are measured in ____________________ instead of mW.

____________________ shift keying is a binary modulation similar to phase modulation.

What is the receive signal strength indicator?

The term ____ describes the rate of electrical flow.

Which of the following units is used to measure frequency?

What does a loss of 10 decibels mean with respect to the percent of power loss in mW?

Mulitple copies of an RF signal may reach the receiver at different times due to reflection.

____ modulation changes the number of waves representing one cycle.

Define the signal-to-noise ratio.

The way in which RG signals travel is referred to as wave ____________.

Which of the following are advantages of digital modulation over analog moduation? (Choose all that apply.)

What is the positive difference in amplitude between two signals?

Resistance is measured in ohms and the total amount of resistance is called the ____________________.

What is the propagation behavior known as multipath?

The World of Wireless

Wireless Local Area Networks

Antennas

Physical Layer Standards

Medium Access Control Layer Standards

WLAN Management and Architectures

Conducting a Site Survey

Wireless LAN Security Vulnerabilities

Implementing Wireless LAN Security

Managing a Wireless LAN

Wireless Network Troubleshooting and Optimization

Other Wireless Networks

Filters