Question 1

Which is true about wireless AP and device optimization?

Accepted Answer

A)  using autonomous APs reduces TCO 
B)  always use picocell APs for large coverage areas 
C)  conservative roaming setting should be used for VoWiFi devices 
D)  devices should be set to maintain their wireless connection even when connected to a wired network 
A)  using autonomous APs reduces TCO 
B)  always use picocell APs for large coverage areas 
C)  conservative roaming setting should be used for VoWiFi devices 
D)  devices should be set to maintain their wireless connection even when connected to a wired network

Question 2

What is cochannel interference?

Accepted Answer

WLANs that are in the same area can be a

Question 3

Describe the noise floor.

Accepted Answer

The noise floor is a measure o

Question 4

One way to reduce ISI for outdoor settings is to use which type of antenna?

Accepted Answer

A)  omnidirectional 
B)  unidirectional 
C)  highly-directional 
D)  multidirectional 
A)  omnidirectional 
B)  unidirectional 
C)  highly-directional 
D)  multidirectional

Question 5

If the wireless device is configured for DHCP yet no DHCP server is active,then Windows assigns a(n)____________________ IP Addressing address that begins with the IP range 169.254.x.x.

Accepted Answer

Automatic

Question 6

This type of interference can affect the entire 2.4 GHz band.

Accepted Answer

A)  wideband 
B)  longband 
C)  multiband 
D)  narrowband 
A)  wideband 
B)  longband 
C)  multiband 
D)  narrowband

Question 7

In a wireless environment,a station might be in the range of an AP but not in the range of all other stations.

Accepted Answer

A) True 
 B)False

Question 8

EMI is strictly a man-made electronic disturbance.

Accepted Answer

A) True 
 B)False

Question 9

When considering an outdoor network without obstructions,what do you need to keep in mind?

Accepted Answer

A)  radio signals attenuate with the square of the distance 
B)  doubling the range requires double the power 
C)  antennas should be installed low to the ground 
D)  the SOM should be at least 25 dB 
A)  radio signals attenuate with the square of the distance 
B)  doubling the range requires double the power 
C)  antennas should be installed low to the ground 
D)  the SOM should be at least 25 dB

Question 10

Explain why the statement "The network seems to be working OK so there must not be any RF interference." might be considered a wireless 'myth'.

Accepted Answer

Because the IEEE 802.11 protocol is desi

Question 11

Which of the following is NOT a solution to the hidden node problem?

Accepted Answer

A)  move the hidden node device 
B)  increase the client device's power 
C)  add another AP to the WLAN 
D)  increase the AP's power 
A)  move the hidden node device 
B)  increase the client device's power 
C)  add another AP to the WLAN 
D)  increase the AP's power

Question 12

Describe intersymbol interference.

Accepted Answer

When an RF signal is transmitted, it doe

Question 13

Match between columns
                        Premises: RF interference that affects the entire frequency band,such as the entire 2.4-GHz band
transmission problem involving two wireless devices,in which the wireless device closest to the AP transmits at a higher power than the other,more distant device,thereby overwhelming the weaker signal from the distant device
any undesirable electrical energy emitted within the frequency range dedicated to RF transmissions
an undesirable electronic disturbance,either manmade or natural,which causes an undesirable degrading in the performance of electrical equipment
a WLAN that uses a reduced power output from the AP; results in a smaller coverage area but can allow for increased performance due to channel reuse
an IP address that begins with the IP range 169.254.x.x and is assigned if a device cannot receive a valid IP
the area between two APs in which a wireless device begins to search for a new AP with which to associate
wireless networks that are used in areas in which large numbers of device are clustered close together
RF interference that covers all bands of the RF spectrum
RF interference that is usually generated by television,radio,and satellite transmitters

Accepted Answer

The Answer of EMI and wideband interference and all-band interference is...

Question 14

If a wireless device is not connecting with the AP,what are the first two things you should check? (Choose two.)

Accepted Answer

A)  wireless device and AP are configured for the same subnet 
B)  matching SSID 
C)  excessive collisions 
D)  security settings 
A)  wireless device and AP are configured for the same subnet 
B)  matching SSID 
C)  excessive collisions 
D)  security settings

Question 15

What are four factors that influence system throughput?

Accepted Answer

Access point processor speed
Distance fr

Question 16

The time difference of the arrival of signals as copies travel along different paths is referred to as which of the following?

Accepted Answer

A)  system operating margin 
B)  return loss 
C)  multipath 
D)  delay spread 
A)  system operating margin 
B)  return loss 
C)  multipath 
D)  delay spread

Question 17

The _________ floor indicates the weakest signal that can be received.

Accepted Answer

The answer of The _________ floor indicates the weakest signal...

Question 18

What happens when an RF signal moves through mediums of different densities?

Accepted Answer

A)  it slows down 
B)  it bends 
C)  it speeds up 
D)  it scrambles 
A)  it slows down 
B)  it bends 
C)  it speeds up 
D)  it scrambles

Question 19

To ensure smooth roaming between coverage areas,which of the following must be true?

Accepted Answer

A)  APs must use the same SSID and channel number 
B)  APs must use the same SSID and security settings 
C)  No cell overlap must be present 
D)  Channel and security settings must be different but SSID must be the same 
A)  APs must use the same SSID and channel number 
B)  APs must use the same SSID and security settings 
C)  No cell overlap must be present 
D)  Channel and security settings must be different but SSID must be the same

Question 20

The noise floor indicates the strongest signal that can be received.

Accepted Answer

A) True 
 B)False

Which is true about wireless AP and device optimization?

What is cochannel interference?

Describe the noise floor.

One way to reduce ISI for outdoor settings is to use which type of antenna?

If the wireless device is configured for DHCP yet no DHCP server is active,then Windows assigns a(n)____________________ IP Addressing address that begins with the IP range 169.254.x.x.

This type of interference can affect the entire 2.4 GHz band.

In a wireless environment,a station might be in the range of an AP but not in the range of all other stations.

EMI is strictly a man-made electronic disturbance.

When considering an outdoor network without obstructions,what do you need to keep in mind?

Explain why the statement "The network seems to be working OK so there must not be any RF interference." might be considered a wireless 'myth'.

Which of the following is NOT a solution to the hidden node problem?

Describe intersymbol interference.

If a wireless device is not connecting with the AP,what are the first two things you should check? (Choose two.)

What are four factors that influence system throughput?

The time difference of the arrival of signals as copies travel along different paths is referred to as which of the following?

The _________ floor indicates the weakest signal that can be received.

What happens when an RF signal moves through mediums of different densities?

To ensure smooth roaming between coverage areas,which of the following must be true?

The noise floor indicates the strongest signal that can be received.

The World of Wireless

Wireless Local Area Networks

Radio Frequency Fundamentals

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

Other Wireless Networks

Filters

Exam 12: Wireless Network Troubleshooting and Optimization

Which is true about wireless AP and device optimization?

What is cochannel interference?

Describe the noise floor.

One way to reduce ISI for outdoor settings is to use which type of antenna?

If the wireless device is configured for DHCP yet no DHCP server is active,then Windows assigns a(n)____________________ IP Addressing address that begins with the IP range 169.254.x.x.

This type of interference can affect the entire 2.4 GHz band.

In a wireless environment,a station might be in the range of an AP but not in the range of all other stations.

EMI is strictly a man-made electronic disturbance.

When considering an outdoor network without obstructions,what do you need to keep in mind?

Explain why the statement "The network seems to be working OK so there must not be any RF interference." might be considered a wireless 'myth'.

Which of the following is NOT a solution to the hidden node problem?

Describe intersymbol interference.

If a wireless device is not connecting with the AP,what are the first two things you should check? (Choose two.)

What are four factors that influence system throughput?

The time difference of the arrival of signals as copies travel along different paths is referred to as which of the following?

The _________ floor indicates the weakest signal that can be received.

What happens when an RF signal moves through mediums of different densities?

To ensure smooth roaming between coverage areas,which of the following must be true?

The noise floor indicates the strongest signal that can be received.

The World of Wireless

Wireless Local Area Networks

Radio Frequency Fundamentals

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

Other Wireless Networks

Filters