Practice Quiz

CWNA Wireless Network Administrator

Category - CWNA

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Which of the following specifies why passive scanning is used in a wireless LAN?
  1. To allow clients to authenticate with an access point
  2. To reduce the time taken by clients to locate and associate to access points when they are roaming
  3. To allow clients to actively search for any access points within range
  4. To determine which bridge the client will connect to
Explanation
Answer - B - Passive scanning is used to reduce the time taken by clients to locate and associate to access points when they are roaming.

Key Takeaway: A client station constantly monitors beacons sent by all access points in its vicinity. It decides which access point would be the best candidate for re-association if the current link should fail. Time is saved in re-association, making roaming a more seamless process.
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