QUESTION: 325

Which communication methods may be used between access points? Select all that apply.

Communicating over the wired segment in repeater mode.
Communicating over the wired segment in root mode.
Communicating over the wireless segment in repeater mode.
Access points never communicate with each other.
Communicating over the wired segment in bridge mode.

Answer(s): A,B

Explanation:

Root Mode is used when the access point is connected to a wired backbone through its wired (usually Ethernet) interface. Most access points that support modes other than root mode come configured in root mode by default.

Reference:

CWNA Official Study Guide, Page 103
A is correct as well. See CWNA Official Study Guide, 2nd Edition, Page 299

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QUESTION: 326

Which of the following items are sometimes used in an indoor site survey?

An encryption key server.
Spectrum analyzer
Wireless workgroup bridge
A mobile equipment cart
SSH Server

Answer(s): B

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QUESTION: 327

What is a cause of the "hidden node" problem?

Interfering obstacles between clients.
Clients broadcasting with too much power.
Access points broadcasting with too little power.
Clients being too close together.

Answer(s): A

Explanation:

Hidden node is a situation encountered with wireless LANs in which at least one node is unableto hear (detect) one or more of the other nodes connected to the wireless LAN. In thissituation, a node can see the access point, but cannot see that there are other clients alsoconnected to the same access point due to some obstacle or a large amount of distancebetween the nodes. This situation causes a problem in medium access sharing, causingcollisions between node transmissions.

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