Question 1

IEEE 802.11a achieves its increase in speed and flexibility over 802.11b by each of the following except ______________.

Accepted Answer

A)  higher frequency 
B)  using less bandwidth 
C)  more transmission channels 
D)  a new multiplexing technique 
A)  higher frequency 
B)  using less bandwidth 
C)  more transmission channels 
D)  a new multiplexing technique B

Question 2

The Unlicensed National Information Infrastructure (U-NII) band operates at the _____ frequency.

Accepted Answer

A)  2.4 GHz 
B)  33 GHz 
C)  5 GHz 
D)  16 KHz 
A)  2.4 GHz 
B)  33 GHz 
C)  5 GHz 
D)  16 KHz C

Question 3

When actively using a network while roaming in an ESS, the process of connecting and disconnecting from the APs in one's path is called ________.

Accepted Answer

A)  MIMO 
B)  handoff 
C)  switching 
D)  nomadic 
A)  MIMO 
B)  handoff 
C)  switching 
D)  nomadic B

Question 4

One of the reasons that 802.11n achieves a higher bandwidth is that it bonds two ISM or U-NII channels. Another important reason is that it_____________.

Accepted Answer

A)  eliminates multipath interference 
B)  uses antenna diversity 
C)  can transmit using multiple spatial streams 
D)  can transmit in any two frequency channels simultaneously 
A)  eliminates multipath interference 
B)  uses antenna diversity 
C)  can transmit using multiple spatial streams 
D)  can transmit in any two frequency channels simultaneously

Question 5

Although such devices as 2.4 GHz cordless phones, microwave ovens, and Bluetooth devices may cause interference problems with 802.11b networks in the 2.4 GHz ISM band, they are not a problem with 802.11a.

Accepted Answer

A) True 
 B)False

Question 6

The most important change made to the MAC layer of 802.11a was ______.

Accepted Answer

A)  to make the frames shorter 
B)  to increase security 
C)  to make the frames longer for efficiency 
D)  none of the above 
A)  to make the frames shorter 
B)  to increase security 
C)  to make the frames longer for efficiency 
D)  none of the above

Question 7

The Federal Communications Commission (FCC) has segmented the 555 MHz of the original U-NII spectrum into four segments or bands, and each band has a maximum power limit.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following is a reason that 802.11a is more efficient than 802.11g when both operate at the same data rate?

Accepted Answer

A)  802.11g has a longer SIFS. 
B)  802.11a devices can handle more data. 
C)  802.11a equipment is more sophisticated and expensive. 
D)  802.11a time slots are shorter. 
A)  802.11g has a longer SIFS. 
B)  802.11a devices can handle more data. 
C)  802.11a equipment is more sophisticated and expensive. 
D)  802.11a time slots are shorter.

Question 9

Although 802.11n can achieve data rates of 300 Mbps when using 40 MHz of bandwidth in the ISM band, one of the main challenges of deploying a WLAN in this frequency range is _________.

Accepted Answer

A)  intersymbol interference 
B)  co-channel interference on channel 6 
C)  excessive multipath interference on channels 1 and 11 
D)  interference from the U-NII band 
A)  intersymbol interference 
B)  co-channel interference on channel 6 
C)  excessive multipath interference on channels 1 and 11 
D)  interference from the U-NII band

Question 10

Which of the following is specifically designed to enhance support for audio and video in 802.11 WLANs?

Accepted Answer

A)  wireless controllers 
B)  WPA2 
C)  wireless repeaters 
D)  WMM 
A)  wireless controllers 
B)  WPA2 
C)  wireless repeaters 
D)  WMM

Question 11

How many pilot carriers are available in 802.11n in the U-NII band using 40 MHz of bandwidth?

Accepted Answer

A)  4 
B)  2 
C)  6 
D)  8 
A)  4 
B)  2 
C)  6 
D)  8

Question 12

Why is WEP considered far inferior to WPA and WPA2?

Accepted Answer

A)  It transmits an unencrypted 24-bit IV. 
B)  The AP cannot properly authenticate the client devices. 
C)  It does not support encryption at all. 
D)  It is more secure than using RADIUS. 
A)  It transmits an unencrypted 24-bit IV. 
B)  The AP cannot properly authenticate the client devices. 
C)  It does not support encryption at all. 
D)  It is more secure than using RADIUS.

Question 13

The original IEEE 802.11 standard, established in 1997, was for WLANs operating at what maximum speed?

Accepted Answer

A)  1 Mbps 
B)  2 Mbps 
C)  3 Mbps 
D)  4 Mbps 
A)  1 Mbps 
B)  2 Mbps 
C)  3 Mbps 
D)  4 Mbps

Question 14

Each frequency channel in an 802.11a WLAN is 20 MHz wide and supports ______ subcarrier signals.

Accepted Answer

A)  56 
B)  114 
C)  52 
D)  48 
A)  56 
B)  114 
C)  52 
D)  48

Question 15

The maximum mandatory rate of an IEEE 802.11a WLAN, according to the standard, is _______.

Accepted Answer

A)  11 Mbps 
B)  24 Mbps 
C)  54 Mbps 
D)  108 Mbps 
A)  11 Mbps 
B)  24 Mbps 
C)  54 Mbps 
D)  108 Mbps

Question 16

All 5 GHz bands are available to WLANs worldwide.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is one of the most important reasons that companies deploy wireless controllers?

Accepted Answer

A)  It enables bridging of multiple WLANs. 
B)  It enhances security. 
C)  It simplifies management of the WLAN. 
D)  Wireless controllers support TKIP. 
A)  It enables bridging of multiple WLANs. 
B)  It enhances security. 
C)  It simplifies management of the WLAN. 
D)  Wireless controllers support TKIP.

Question 18

The change the 802.11e amendment made to the MAC layer to enable WLAN traffic to be prioritized is called __________.

Accepted Answer

A)  RSNA 
B)  QoS 
C)  VoWLAN 
D)  WPA2 
A)  RSNA 
B)  QoS 
C)  VoWLAN 
D)  WPA2

Question 19

Which of the following is the best method for enhancing WLAN security in an enterprise?

Accepted Answer

A)  using TKIP and WEP 
B)  deploying an authentication server on the network 
C)  changing frequencies periodically 
D)  installing equipment that supports 802.11s 
A)  using TKIP and WEP 
B)  deploying an authentication server on the network 
C)  changing frequencies periodically 
D)  installing equipment that supports 802.11s

Question 20

Which of the following is a key advantage of WPA2 over WEP?

Accepted Answer

A)  It uses a much stronger encryption algorithm. 
B)  It supports EAP. 
C)  It supports TKIP and MIC. 
D)  All of the above. 
A)  It uses a much stronger encryption algorithm. 
B)  It supports EAP. 
C)  It supports TKIP and MIC. 
D)  All of the above.

IEEE 802.11a achieves its increase in speed and flexibility over 802.11b by each of the following except ______________.

The Unlicensed National Information Infrastructure (U-NII) band operates at the _____ frequency.

When actively using a network while roaming in an ESS, the process of connecting and disconnecting from the APs in one's path is called ________.

One of the reasons that 802.11n achieves a higher bandwidth is that it bonds two ISM or U-NII channels. Another important reason is that it_____________.

Although such devices as 2.4 GHz cordless phones, microwave ovens, and Bluetooth devices may cause interference problems with 802.11b networks in the 2.4 GHz ISM band, they are not a problem with 802.11a.

The most important change made to the MAC layer of 802.11a was ______.

The Federal Communications Commission (FCC) has segmented the 555 MHz of the original U-NII spectrum into four segments or bands, and each band has a maximum power limit.

Which of the following is a reason that 802.11a is more efficient than 802.11g when both operate at the same data rate?

Although 802.11n can achieve data rates of 300 Mbps when using 40 MHz of bandwidth in the ISM band, one of the main challenges of deploying a WLAN in this frequency range is _________.

Which of the following is specifically designed to enhance support for audio and video in 802.11 WLANs?

How many pilot carriers are available in 802.11n in the U-NII band using 40 MHz of bandwidth?

Why is WEP considered far inferior to WPA and WPA2?

The original IEEE 802.11 standard, established in 1997, was for WLANs operating at what maximum speed?

Each frequency channel in an 802.11a WLAN is 20 MHz wide and supports ______ subcarrier signals.

The maximum mandatory rate of an IEEE 802.11a WLAN, according to the standard, is _______.

All 5 GHz bands are available to WLANs worldwide.

Which of the following is one of the most important reasons that companies deploy wireless controllers?

The change the 802.11e amendment made to the MAC layer to enable WLAN traffic to be prioritized is called __________.

Which of the following is the best method for enhancing WLAN security in an enterprise?

Which of the following is a key advantage of WPA2 over WEP?

Introduction to Wireless Communications

Wireless Data Transmission

Understanding Radio Frequency Communications

How Antennas Work

Low Rate Wireless Personal Area Networks

High-Rate Wireless Personal Area Networks

Wi-Fi Wireless Local Area Networks

WMAN - Wireless Metropolitan Area Networks

WWAN - Wireless Wide Area Networks

RFID - Radio Frequency Identification

Wireless Communication in Business

Filters

Exam 8: Wi-Fi Wlan Security

IEEE 802.11a achieves its increase in speed and flexibility over 802.11b by each of the following except ______________.

The Unlicensed National Information Infrastructure (U-NII) band operates at the _____ frequency.

When actively using a network while roaming in an ESS, the process of connecting and disconnecting from the APs in one's path is called ________.

One of the reasons that 802.11n achieves a higher bandwidth is that it bonds two ISM or U-NII channels. Another important reason is that it_____________.

Although such devices as 2.4 GHz cordless phones, microwave ovens, and Bluetooth devices may cause interference problems with 802.11b networks in the 2.4 GHz ISM band, they are not a problem with 802.11a.

The most important change made to the MAC layer of 802.11a was ______.

The Federal Communications Commission (FCC) has segmented the 555 MHz of the original U-NII spectrum into four segments or bands, and each band has a maximum power limit.

Which of the following is a reason that 802.11a is more efficient than 802.11g when both operate at the same data rate?

Although 802.11n can achieve data rates of 300 Mbps when using 40 MHz of bandwidth in the ISM band, one of the main challenges of deploying a WLAN in this frequency range is _________.

Which of the following is specifically designed to enhance support for audio and video in 802.11 WLANs?

How many pilot carriers are available in 802.11n in the U-NII band using 40 MHz of bandwidth?

Why is WEP considered far inferior to WPA and WPA2?

The original IEEE 802.11 standard, established in 1997, was for WLANs operating at what maximum speed?

Each frequency channel in an 802.11a WLAN is 20 MHz wide and supports ______ subcarrier signals.

The maximum mandatory rate of an IEEE 802.11a WLAN, according to the standard, is _______.

All 5 GHz bands are available to WLANs worldwide.

Which of the following is one of the most important reasons that companies deploy wireless controllers?

The change the 802.11e amendment made to the MAC layer to enable WLAN traffic to be prioritized is called __________.

Which of the following is the best method for enhancing WLAN security in an enterprise?

Which of the following is a key advantage of WPA2 over WEP?

Introduction to Wireless Communications

Wireless Data Transmission

Understanding Radio Frequency Communications

How Antennas Work

Low Rate Wireless Personal Area Networks

High-Rate Wireless Personal Area Networks

Wi-Fi Wireless Local Area Networks

WMAN - Wireless Metropolitan Area Networks

WWAN - Wireless Wide Area Networks

RFID - Radio Frequency Identification

Wireless Communication in Business

Filters