Question 1

Which digital modulation technique is similar to frequency modulation?

Accepted Answer

A)  amplitude shift keying 
B)  frequency shift keying 
C)  phase shift keying 
D)  All of the above 
A)  amplitude shift keying 
B)  frequency shift keying 
C)  phase shift keying 
D)  All of the above B

Question 2

What is amplitude modulation?

Accepted Answer

In amplitude modulation (AM) the height of a carrier wave is known as the amplitude. The height of the carrier can be changed so that a higher wave represents a 1 bit while a lower wave represents a 0 bit. Amplitude modulation (AM) changes the amplitude so that the highest peaks of the carrier wave represent a 1 bit while the lower waves represent a 0 bit. Amplitude modulation is most frequently used by broadcast radio stations. However, AM is often susceptible to interference from outside sources such as lightning from a thunderstorm, and is not generally used for data transmissions.

Question 3

When a digital signal needs to be transmitted over an analog medium, such as when a computer needs to send digital signals over an analog telephone line or TV cable, a device known as a(n) ____ is used.

Accepted Answer

A)  modem 
B)  translator 
C)  amplifier 
D)  phaser 
A)  modem 
B)  translator 
C)  amplifier 
D)  phaser A

Question 4

How is RF power measured?

Accepted Answer

RF power can be measured by two differen

Question 5

____________________ is defined as the positive difference in amplitude between two signals.

Accepted Answer

The answer of ____________________ is defined as the positive difference...

Question 6

In a wireless transmission data travels on invisible radio waves.

Accepted Answer

A) True 
 B)False

Question 7

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 8

What is the shape of a Fresnel zone?

Accepted Answer

A)  Circular 
B)  Rectangular 
C)  Ellipsoidal 
D)  Elliptical 
A)  Circular 
B)  Rectangular 
C)  Ellipsoidal 
D)  Elliptical

Question 9

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 10

A(n) ____________________ signal has numerous starts and stops throughout the signal stream.

Accepted Answer

The answer of A(n) ____________________ signal has numerous starts and...

Question 11

What is polarization?

Accepted Answer

The orientation of the radio waves as th

Question 12

____ polarization is typically used in wireless LANs with the dual antennas of access points pointing upward.

Accepted Answer

A)  Vertical 
B)  Horizontal 
C)  Circular 
D)  Dual 
A)  Vertical 
B)  Horizontal 
C)  Circular 
D)  Dual

Question 13

There are several factors that may result in RF loss. List and describe three of them.

Accepted Answer

Absorption-Certain types of materials ca

Question 14

Which type of RF loss is caused by the equipment transmitting the signal?

Accepted Answer

A)  Scattering 
B)  Voltage Standing Wave Ratio 
C)  Diffraction 
D)  Absorption 
A)  Scattering 
B)  Voltage Standing Wave Ratio 
C)  Diffraction 
D)  Absorption

Question 15

A loss of 10 decibels means that ____ percent of the power has been lost in mW.

Accepted Answer

A)  10 
B)  30 
C)  90 
D)  100 
A)  10 
B)  30 
C)  90 
D)  100

Question 16

Why is it important to understand how wireless technology works?

Accepted Answer

Knowing how wireless works can become an

Question 17

A ____ dipole antenna produces a flatter signal than a standard dipole antenna.

Accepted Answer

A)  Fresnel 
B)  high-gain 
C)  zoned 
D)  semi-directional 
A)  Fresnel 
B)  high-gain 
C)  zoned 
D)  semi-directional

Question 18

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 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

____ can occur intentionally from an external power source that amplifies the signal, or unintentionally when an RF signal bounces off an object and combines with the original signal to amplify it.

Accepted Answer

A)  Phase shift 
B)  Modulation 
C)  Loss 
D)  Gain 
A)  Phase shift 
B)  Modulation 
C)  Loss 
D)  Gain

Which digital modulation technique is similar to frequency modulation?

What is amplitude modulation?

When a digital signal needs to be transmitted over an analog medium, such as when a computer needs to send digital signals over an analog telephone line or TV cable, a device known as a(n) ____ is used.

How is RF power measured?

____________________ is defined as the positive difference in amplitude between two signals.

In a wireless transmission data travels on invisible radio waves.

Which of the following units is used to measure frequency?

What is the shape of a Fresnel zone?

The term ____ describes the rate of electrical flow.

A(n) ____________________ signal has numerous starts and stops throughout the signal stream.

What is polarization?

____ polarization is typically used in wireless LANs with the dual antennas of access points pointing upward.

There are several factors that may result in RF loss. List and describe three of them.

Which type of RF loss is caused by the equipment transmitting the signal?

A loss of 10 decibels means that ____ percent of the power has been lost in mW.

Why is it important to understand how wireless technology works?

A ____ dipole antenna produces a flatter signal than a standard dipole antenna.

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

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

____ can occur intentionally from an external power source that amplifies the signal, or unintentionally when an RF signal bounces off an object and combines with the original signal to amplify it.

Its a Wireless World

Wireless LAN Devices and Standards

IEEE 80211 Physical Layer Standards

IEEE 80211 Media Access Control and Network Layer Standards

Planning and Deploying a Wireless LAN

Conducting a Site Survey

Wireless LAN Security and Vulnerabilities

Implementing Wireless Lan Security

Managing a Wireless LAN

Network Settings and Wireless LAN Troubleshooting

Personal, Metropolitan, and Wide Area Wireless Networks

Filters

Exam 3: How Wireless Works

Which digital modulation technique is similar to frequency modulation?

What is amplitude modulation?

When a digital signal needs to be transmitted over an analog medium, such as when a computer needs to send digital signals over an analog telephone line or TV cable, a device known as a(n) ____ is used.

How is RF power measured?

____________________ is defined as the positive difference in amplitude between two signals.

In a wireless transmission data travels on invisible radio waves.

Which of the following units is used to measure frequency?

What is the shape of a Fresnel zone?

The term ____ describes the rate of electrical flow.

A(n) ____________________ signal has numerous starts and stops throughout the signal stream.

What is polarization?

____ polarization is typically used in wireless LANs with the dual antennas of access points pointing upward.

There are several factors that may result in RF loss. List and describe three of them.

Which type of RF loss is caused by the equipment transmitting the signal?

A loss of 10 decibels means that ____ percent of the power has been lost in mW.

Why is it important to understand how wireless technology works?

A ____ dipole antenna produces a flatter signal than a standard dipole antenna.

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

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

____ can occur intentionally from an external power source that amplifies the signal, or unintentionally when an RF signal bounces off an object and combines with the original signal to amplify it.

Its a Wireless World

Wireless LAN Devices and Standards

IEEE 80211 Physical Layer Standards

IEEE 80211 Media Access Control and Network Layer Standards

Planning and Deploying a Wireless LAN

Conducting a Site Survey

Wireless LAN Security and Vulnerabilities

Implementing Wireless Lan Security

Managing a Wireless LAN

Network Settings and Wireless LAN Troubleshooting

Personal, Metropolitan, and Wide Area Wireless Networks

Filters