Question 1

List the four singaling processing techniques employe by MIMO to achieve high throughput.

Accepted Answer

spatial diversity, s

Question 2

Contrast an omnidirectional antenna with a semidirectional antenna.

Accepted Answer

Unlike an omnidirectional antenna, which

Question 3

What is the most common type of antenna for a WLAN?

Accepted Answer

The most common type of antenn

Question 4

Define the Fresnel zone.

Accepted Answer

The Fresnel zone is an elliptical area i

Question 5

What term is used to describe an electrical entity that hinders the flow of current and is often a result of a mismatch between two devices?

Accepted Answer

A)  fade margin 
B)  sensitivity 
C)  negative gain 
D)  impedance 
A)  fade margin 
B)  sensitivity 
C)  negative gain 
D)  impedance

Question 6

Which technique can increase performance by sending independent streams of information at the same time over the same frequencies?

Accepted Answer

A)  spatial diversity 
B)  MIMO diversity 
C)  transmit beam forming 
D)  spatial multiplexing 
A)  spatial diversity 
B)  MIMO diversity 
C)  transmit beam forming 
D)  spatial multiplexing

Question 7

The strength of a signal from an omnidirectional antenna flows out 90 degrees from the antenna's orientation.

Accepted Answer

A) True 
 B)False

Question 8

What is the term given to the difference between the received signal level and the signal level required by the radio to assure there are no errors?

Accepted Answer

A)  free space path loss 
B)  system operating margin 
C)  voltage standing wave ration 
D)  link budget 
A)  free space path loss 
B)  system operating margin 
C)  voltage standing wave ration 
D)  link budget

Question 9

What does an Azimuth chart represent?

Accepted Answer

The Azimuth chart represents t

Question 10

Which of the following are measurements used with antennas? (Choose all that apply.)

Accepted Answer

A)  intentional radiator 
B)  decibels isotropic 
C)  decibels/mW 
D)  decibles per second 
A)  intentional radiator 
B)  decibels isotropic 
C)  decibels/mW 
D)  decibles per second

Question 11

In what units is passive gain measured?

Accepted Answer

A)  effective isotropically radiated power 
B)  intentionally radiated power 
C)  decibels dipole 
D)  decibels isotropic 
A)  effective isotropically radiated power 
B)  intentionally radiated power 
C)  decibels dipole 
D)  decibels isotropic

Question 12

Which technique uses a process in which the sending device codes or assigns weights to the signals before sending them which results in improved reliability?

Accepted Answer

A)  spatial diversity 
B)  maixmal ratio combining 
C)  transmit beam forming 
D)  spatial multiplexing 
A)  spatial diversity 
B)  maixmal ratio combining 
C)  transmit beam forming 
D)  spatial multiplexing

Question 13

Which of the following are steps for mitigating obstructions in the Fresnel zone? (Choose all that apply.)

Accepted Answer

A)  lower the tower height 
B)  reduce obstructions such as trees 
C)  raise the antenna mounting point 
D)  use a MIMO antenna 
A)  lower the tower height 
B)  reduce obstructions such as trees 
C)  raise the antenna mounting point 
D)  use a MIMO antenna

Question 14

Which measurement indicates how narrow or wide a transmission is?

Accepted Answer

A)  Fresnel zone 
B)  Azimuth 
C)  beamwidth 
D)  elevation chart 
A)  Fresnel zone 
B)  Azimuth 
C)  beamwidth 
D)  elevation chart

Question 15

Match between columns
                        Premises: information that is computed by the receiver and sent back to the transmitter for use in the antenna configuration
a stick of metal inserted in the earth to ground the antenna
a technique that sends a normal version of the signal along with a shifted version of the same signal
mutiple antennas that can be customized to send an optimal signal
an antenna that divides the coverage area into different parts and gives each part its own antenna
additional power is sent to the antenna from the power source
the VSWR as measured in dB
the ability of an access point to transmit on the antenna that most recently received the strongest incoming signal
the orientation of of radio waves as they leave an antenna
an antenna consisting of a single stretched wire with connection in the middle

Accepted Answer

The Answer of sectorized antenna and ground rod and return is...

Question 16

Which of the following is true about antennas?

Accepted Answer

A)  they are active and generate the power they use to transmit 
B)  they are passive conductors 
C)  they have a single connection point which is to the ground plane 
D)  IR is the power emanating from an antenna 
A)  they are active and generate the power they use to transmit 
B)  they are passive conductors 
C)  they have a single connection point which is to the ground plane 
D)  IR is the power emanating from an antenna

Question 17

What is an Azimuth chart used to represent?

Accepted Answer

A)  the elevation coverage 
B)  the horizontal coverage area 
C)  the vertical coverage area 
D)  the total IR power 
A)  the elevation coverage 
B)  the horizontal coverage area 
C)  the vertical coverage area 
D)  the total IR power

Question 18

____ antennas are used for long distance,point-to-point wireless links,such as connecting buildings that are up to 42 kilometers (25 miles)apart.

Accepted Answer

A)  Fresnel 
B)  Omni-directional 
C)  Semi-directional 
D)  Highly-directional 
A)  Fresnel 
B)  Omni-directional 
C)  Semi-directional 
D)  Highly-directional

Question 19

What does an antenna's beamwidth indicate?

Accepted Answer

An antenna's beamwid

Question 20

An RF signal ____________ has one input and two or more outputs,which divides the power of the input signal to multiple outputs.

Accepted Answer

The answer of An RF signal ____________ has one input...

List the four singaling processing techniques employe by MIMO to achieve high throughput.

Contrast an omnidirectional antenna with a semidirectional antenna.

What is the most common type of antenna for a WLAN?

Define the Fresnel zone.

What term is used to describe an electrical entity that hinders the flow of current and is often a result of a mismatch between two devices?

Which technique can increase performance by sending independent streams of information at the same time over the same frequencies?

The strength of a signal from an omnidirectional antenna flows out 90 degrees from the antenna's orientation.

What is the term given to the difference between the received signal level and the signal level required by the radio to assure there are no errors?

What does an Azimuth chart represent?

Which of the following are measurements used with antennas? (Choose all that apply.)

In what units is passive gain measured?

Which technique uses a process in which the sending device codes or assigns weights to the signals before sending them which results in improved reliability?

Which of the following are steps for mitigating obstructions in the Fresnel zone? (Choose all that apply.)

Which measurement indicates how narrow or wide a transmission is?

Which of the following is true about antennas?

What is an Azimuth chart used to represent?

____ antennas are used for long distance,point-to-point wireless links,such as connecting buildings that are up to 42 kilometers (25 miles)apart.

What does an antenna's beamwidth indicate?

An RF signal ____________ has one input and two or more outputs,which divides the power of the input signal to multiple outputs.

The World of Wireless

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Radio Frequency Fundamentals

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Medium Access Control Layer Standards

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Exam 4: Antennas

List the four singaling processing techniques employe by MIMO to achieve high throughput.

Contrast an omnidirectional antenna with a semidirectional antenna.

What is the most common type of antenna for a WLAN?

Define the Fresnel zone.

What term is used to describe an electrical entity that hinders the flow of current and is often a result of a mismatch between two devices?

Which technique can increase performance by sending independent streams of information at the same time over the same frequencies?

The strength of a signal from an omnidirectional antenna flows out 90 degrees from the antenna's orientation.

What is the term given to the difference between the received signal level and the signal level required by the radio to assure there are no errors?

What does an Azimuth chart represent?

Which of the following are measurements used with antennas? (Choose all that apply.)

In what units is passive gain measured?

Which technique uses a process in which the sending device codes or assigns weights to the signals before sending them which results in improved reliability?

Which of the following are steps for mitigating obstructions in the Fresnel zone? (Choose all that apply.)

Which measurement indicates how narrow or wide a transmission is?

Which of the following is true about antennas?

What is an Azimuth chart used to represent?

____ antennas are used for long distance,point-to-point wireless links,such as connecting buildings that are up to 42 kilometers (25 miles)apart.

What does an antenna's beamwidth indicate?

An RF signal ____________ has one input and two or more outputs,which divides the power of the input signal to multiple outputs.

The World of Wireless

Wireless Local Area Networks

Radio Frequency Fundamentals

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