An engineer must ensure that the new wireless LAN deployment can support seamless roaming between access points using a standard based on an amendment to the 802.11 protocol. Which protocol must the engineer selects?

• A.802.11i
• B.802.11ac
• C.802.11r
• D.802.11e

Correct Answer: C

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Which CLI command does an engineer use to validate that the redundancy peer of a Stateful Switchover pair of controllers is up and connected?

• A.eping
• B.rping
• C.mping
• D.ping

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A network administrator uses GRE over IPSec to connect two branches together via VPN tunnel. Which one of the following is the reason for using GRE over IPSec?

• A.GRE over IPSec provides better QoS mechanism and is faster than other WAN technologies
• B.GRE over IPSec decreases the overhead of the header.
• C.GRE supports use of routing protocol, while IPSec supports encryption.
• D.GRE supports encryption, while IPSec supports use of routing protocol.

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Why is 802.11a connectivity reduced in an X-ray room?

• A.X-rays impact the 802,11a UNll-2 channels that cause access points to dynamically change channels.
• B.X -rays within these rooms cause multipath issues.
• C.X-ray rooms exhibit increased signal attenuation.
• D.X-rays create significant non-Wi-Fi interference on the 802.11a band.

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An engineer as performing a Layer 1 passive wireless site survey utilizing a channel analyzer software in the 2.4 GHz spectrum. Which chart indicates the ratio of interference present during the duration of the capture?
A)

B)

C)

• A.Option C
• B.Option B
• C.Option D
• D.Option A

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