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CCIE Wireless Written Exam v3.1

QUESTION 21

Refer the exhibit. The created dynamic interfaces are bound to an interface group for a specific WLAN profile in a Cisco Wireless LAN Controller. You have noticed duplicated multicast streams on the wireless medium for the given WLAN profile. Which statement is correct?

 

clip_image002

 

A.

Global multicast mode, globai 1Pv6 config, and multicast listener discovery snooping have not been enabled. Enable this to avoid duplicate streams.

B.

Global multicast mode and internet group management protocol snooping have not been enabled . To avoid stream enable both .

C.

The controller creates different multicast groups IDs for each multicast address and VLAN and a result the upstream router sends one copy for each VLAN. Enable Multicast VLAN to avoid duplicate streams.

D.

The controller always uses layer 3 multicast group 10 for all layer 3 multicast traffic sent to the access point internet group management protocol snooping should be disabled to avoid duplicate streams.

 

Correct Answer: C

 

 

QUESTION 22

Two autonomous Aps are connected to a switch on the same VLAN both APS are configured with the same SSID and WPA2-PSK. After making configuration changes to one of the APs, spanning tree disabled one of the switch ports into which AP was plugged. Which two options describe possible reasons that spanning tree disabled a port? (Choose two)

 

A.

One of the Aps was configured as a universal workgroup bridge.

B.

It is not possible for spanning tree to disable a port. The bridging loop must have been coincidental.

C.

Spanning tree was disabled on both Aps.

D.

PortFast was enabled on all ports.

E.

One of the APs was configured as a standard workgroup bridge.

 

Correct Answer: AE

 

 

QUESTION 23

There are 5 switches in the network use VTPv3, SW1 and SW2 configured as Server mode. SW1 is the primary server with revision 50. When add a new SW6 with Revision 200, what will happen?

 

A.

Switch3 updates its own database with the VLAN information received from SW2

B.

VTPv3 configure own database with the VLAN information received from SW1

C.

Switch6 updates its own database with the VLAN information received from SW1

D.

No switch will work

 

Correct Answer: C

 

 

QUESTION 24

Which two statement about LAG in the Cisco wireless LAN controller running Aire OS 8.0 are true? (Choose two)

 

A.

LAG bundles all of the crsco WLC distribution system ports into a single 802.3ad port channel.

B.

There can be only one AP-manager interface if LAG is enabled

C.

LAG configuration change take effect immediately after they are configured

D.

Channel negotiation LACP and PAgP are supported

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Correct Answer: AB

 

 

 

 

QUESTION 25

Refer to the exhibit. Which two statements are true based upon the output in the exhibit? (Choose two.)

 

clip_image004

 

A.

Operation will be effective only if the video profile on the WLC is mapped to the 802.1p protocol with a tagged value of 5.

B.

It is recommended to configure IP multicast on the WLC in multicast-multicast mode.

C.

CAC must be enabled to avoid channel oversubscription and guarantee the configured media bandwidth.

D.

In case of a violation after an RRC re-evaluation, the stream is demoted to the best- effort class.

 

Correct Answer: B

 

 

QUESTION 26

DRAG DROP

You are authenticating users using LWA and ISE guest portal. Drag and drop the step in the process on the left into the correct order on the right.

 

clip_image006

Correct Answer:

clip_image008

 

 

QUESTION 27

DRAG DROP

Drag and drop the mobility architecture components on the left to their primary function on the right.

 

clip_image010

 

Correct Answer:

clip_image012

QUESTION 28

Which key is derived on the client supplicant and the authentication server as a result of the 802.1x/EAP authentication phase?

 

A.

Group Temporal Key

B.

Pairwise Transient Key

C.

Master Session Key

D.

Pairwise Master Key

 

Correct Answer: C

 

 

QUESTION 29

You are deploying cisco 792x wireless phones on your on your Cisco unified wireless network. Which two configuration setting are recomended?

 

A.

Enable PSPF

B.

Enable DTPC

C.

Enable WMM

D.

Enable PMF

 

Correct Answer: BC

 

 

QUESTION 30

which topology is a valid and functional convergence access topology?

 

5760-AIR-CT5760-25-kg

 

3850-WS-C3850-48P-s

 

5508-AIR-CT55098+25-kg

 

2960-WS-C2960+24TC-S

 

3650-WS-C3650-24TS-L

 

3702-AIR-cap3702i-A-K9

 

A.

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B.

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C.

clip_image015

D.

clip_image016

 

Correct Answer: A

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