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问题 #1

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 select?

A. 802.11i

B. 802.11ac

C. 802.11r

D. 802.11e

正确答案：C

问题 #2

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

A. X-rays create significant non-Wi-Fi interference on the 802.11a band.

B. X-rays impact the 802,11a UNll-2 channels that cause access points to dynamically change channels.

C. X -rays within these rooms cause multipath issues.

D. X-ray rooms exhibit increased signal attenuation.

正确答案：D

问题 #3

Which two considerations must a network engineer have when planning for voice over wireless roaming? (Choose two.)

A. Full reauthentication introduces gaps in a voice conversation.

B. Roaming time increases when using 802.1x + Cisco Centralized Key Manegement.

C. Roaming occurs when the phone has seen at least four APs.

D. Roaming occurs when the phone has reached -80 dBs or below.

E. Roaming with only 802.1x authentication requires full reauthentication.

正确答案：AE

问题 #4

Which statement about creating a mobility group is true, excluding mobility anchors?

A. Each WLC must use the same mobility name and be defined as a peer in each other’s static mobility members list.

B. If WLCs with HA SSO are deployed, each WLC in the WLC HA pair considered separately as a mobility peer.

C. The WLCs do not have to be of the same model or type to be a member of a mobility group, however each member should be running different software versions.

D. A mobility groups does not require all WLCs in the group to use the same virtual IP address.

正确答案：A

问题 #5

WLC SSO is set up between two WLCs in a service provider network serving public spaces. On WLC failover, it is noticed that only about half of the original client count is now showing on the secondary WLC, although it is currently showing the role as active. Which design side case explains the issue?

A. The secondary WLC platform does not support the required client count.

B. The WLCs had not completed database sync before the primary failure.

C. SSO is not configured correctly.

D. Some client sessions were in WebAuth-Req state before failover.

正确答案：AC

问题 #6

A wireless engineer is designing a wireless network to support real-time applications over wireless. Which IEEE protocol must the engineer enables on the WLC so that the number of packets that are exchanged between an access point and client are reduced and fast roaming occurs?

A. 802.11w

B. 802.11r

C. 802.11i

D. 802.11k

正确答案：C

问题 #7

An engineer is designing a wireless network that will support many different types of wireless clients. When conducting the survey, which client must be used to ensure a consistent experience for all of the wireless clients?

A. the client that has the highest RF properties

B. the client that is used most by the company

C. the client that is used least by the company

D. the client with the worst RF characteristics

正确答案：C

问题 #8

A wireless network consultant must assess an existing wireless LAN controller. Which section must the consultant check before replacing the old APs with APs that are IEEE 802.11ac-capable?

A. number of AP licenses

B. controller PSU

C. throughput capacity

D. software version

正确答案：B

问题 #9

Which statement about the 9800 Series Wireless Controller mobility tunnel on a Cisco Catalyst 9800 controller is true?

A. It is an IPsec tunnel with control path only.

B. It is a CAPWAP tunnel with data path only.

C. It is a CAPWAP tunnel with control path and data path.

D. It is an IPsec tunnel with control path and data path.

正确答案：D

问题 #10

Where must the APs be mounted when used in a high-density wireless network to provide 6 dB to 20 dB of attenuation to a cell?

A. in the aisle

B. under the seat

C. above the stage

D. under the stage

正确答案：BC

问题 #11

Guest anchoring is configured for a newly created SSID for your company. It has been noticed that the mobility tunnels are not up, and that MPING fails from your foreign WLC to the anchor WLC. What is the reason that it is failing?

A. A rule is needed at the firewall to allow UDP port 16666 for communication to work.

B. A rule is needed at the firewall to allow UDP port 97 for communication to work.

C. A rule is needed at the firewall to allow TCP port 97 for communication to work.

D. A rule is needed at the firewall to allow TCP port 16666 for communication to work.

正确答案：B

问题 #12

An enterprise is using a Cisco AireOS controller and Wi-Fi 6 APs. The controller is installed in the head office, and the employees primarily use Apple OS devices. The APs broadcast WLAN ENT-WLAN406558520-1 for the employees and a guest WLAN with similar naming. What needs to be enabled on the controller to optimize roaming?

A. Aggregated Probe Response Optimization

B. Fast SSID Changing

C. Load Balancing Window

D. Client Timers

正确答案：BE

问题 #13

A medium-sized hospitality company with 50 hotels needs to upgrade the existing WLAN in each hotel to 802.11n. During the site surveys for each hotel, what needs to be taken into consideration when determining the locations for each AP?

A. Selecting locations that are easily accessed so maintenance and upgrades can be performed quickly.

B. Selecting AP locations where power is already available.

C. Selecting APs that can be hidden in ceiling panels to provide a secure and clean aesthetic look.

D. Selecting locations that make visual assessment of the AP operation easy.

正确答案：B

问题 #14

APs in a remote office recently have been converted from local mode to FlexConnect to take advantage of the local switching. After the change, remote wireless users report voice quality issues and bad quality on wireless IP phones while roaming. A debug is performed, and it is noticed that the 802.11r Fast Transition is not working as expected, like on local mode AP, though the same WLAN configuration is in place. What is the cause of the issue regarding the FlexConnect APs?

A. They do not support 802.11r FT.

B. They must be added into AP groups along with a common RF profile.

C. They must be in a FlexConnect group to support 802.11r FT.

D. They must be added to AP groups to support fast roaming methods.

正确答案：B

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