Mobility Fundamentals Wireless LAN Networks Quiz Answers

1. Where would Wireless Access Points likely be found?

Hotels*
Cafes*
Secure facilities
Airport*

2. What statements correctly describe the frame subtypes in management frame? (Choose 3)

Reassociation request: Sends by a wireless client when it’s Association request is rejected by a Access Point.
Beacon frame: Sends periodically from an Access Point to announce its presence and provide the SSID and other preconfigured parameters.*
Association request: Carries information about the connection including SSID.*
Authentication frame: The Access Point sends an authentication frame to the wireless client requesting its identity.
Probe request frame: Sends from a wireless client when it requires information from the wireless network.*

3. Match the frequency channel saturation avoidance technique used.

The technique creates redundancy in the transmitted signal in an effort to counter quality loss in the wireless medium. —–> Direct-sequence spread spectrum (DSSS)*
This technique is able to maximize spectral efficiency without causing adjacent channel interference. —–> Orthogonal frequency-division multiplexing (OFDM)*
This technique requires the sender and receiver to be synchronized to “know” which channel to jump. —-> Frequency-hopping spread spectrum (FHSS)*

Other Incorrect Match Options:
Frequency Modulation
Pulse Modulation

4. What are the three-stage process use by wireless client to associate with a Wireless Access Point?

Stage 1
Discover AP*

Stage 2
Authentication*

Stage 3
Association*

5. What are reasons for clustering Access Points ?

Deployment of Access Points viewed as a single wireless network.
All of the above.*
Single point of administration for Access Points.
Ease in setting up, configuration and management.
Avoid channel interference.

6. What are the differences between Autonomous Access Point and Controller-based Access Point. (Choose 4)

Autonomous Access Point is standalone.*
Controller-based Access Point is server dependent.*
Controller-based Access Point is managed by a WLAN Controller.*
Controller-based Access Point is manually configured using GUI or CLI.
Autonomous Access Point is use for a network that requires only a couple of access points.*

7. Which of the following statements about SSIDs are true? (Choose 3)

They should be unique to your wireless LAN.*
They are broadcast, by default, by most wireless network devices.*
Only one wireless device uses them.
All wireless networks use them.*

8. In an attempt to maximize your wireless throughput while minimizing interference on your brand new 802.11b/g wireless Access Point, which setting should you change?

Change the default channel as appropriate.*
Change the frequency to 5.0 GHz.
Change the channel to 6.
Change the WAP setting not to broadcast the SSID.

Explanation:
Most Access Points come with default channel setting. To avoid interference with neighboring networks, it is advisable to use a wireless channel scanner to check for the less congested channel. Set your access point accordingly. Try to avoid placing access points near walls of the facility to minimize interference with neighboring networks. In addition to changing the channel, other settings you may wish to change include the name of your network and your router’s security options.

9. Bob has set up a Wi-Fi network for his café that works well within the indoor area, but works poorly on the patio. What’s the least expensive option for making Wi-Fi work for the patio customers?

Exchange his 802.11g wireless Access Point for an 802.11n Access Point.
Run another network point to the patio and add a second Access Point.
Replace the factory antennas on the wireless Access Point.*
Reverse the polarity on the Access Point’s antennas.

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