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WLAN High Availability
The questions from this section cover 20% of the entire content and are dedicated to evaluating the following abilities of the candidates:
- Design high availability for various controllers, including network availability through LAG, stateful switchover, as well as anchor controller priority & redundancy;
- Design high availability for APs, including fall-back (primary, secondary, and assigning tertiary) and AP prioritization.
NEW QUESTION # 43
A customer called with a requirement that internal clients must be on different subnets depending on the building they are in. All access points are operating in local mode and will not be modified, and this is a single controller solution. Which design approach creates the desired result?
- A. Create FlexConnect groups, place the access points in, and set the correct VLAN to SSID mapping based on location.
- B. Create AP groups for each desired location, map the correct VLANs to the internal SSID, and add the access points for that location.
- C. Create mobility anchors for the SSID and on the controller under the internal SSID create a foreign map to the desired VLAN based on location.
- D. Create an SSID place it to the desired VLAN under WLANs and configure 802.1x in ISE to assign the correct VLAN based on the SSID from which the client is authenticating
Answer: B
Explanation:
Explanation
https://www.cisco.com/c/en/us/support/docs/wireless-mobility/wireless-vlan/71477-ap-group-vlans-wlc.html
NEW QUESTION # 44
Refer to the exhibit.
What is the main reason why the Wi-Fi design engineer took a different approach than installing the APs in the offices, even though that installation provides better coverage?
- A. antenna gain
- B. power supply considerations
- C. aesthetics
- D. transmit power considerations
Answer: D
Explanation:
Explanation
https://www.cisco.com/en/US/docs/solutions/Enterprise/Mobility/emob30dg/RFDesign.html#wp1000551
NEW QUESTION # 45
A university is in the process of designing a wireless network in an auditorium that seats 500 students and supports student laptops. Which design methodology should the university implement in the auditorium?
- A. high-density design model
- B. roaming design model
- C. location design model
- D. voice design model
Answer: D
Explanation:
Section: Wired and Wireless Infrastructure
NEW QUESTION # 46
An engineer has configured guest anchoring for a newly created SSD however, the mobility tunnels are not up, and EPING is failing from the foreign WLC to the anchor WLC. Which traffic flow must be allowed at the firewall to enable the communication?
- A. IP protocol 97
- B. UDP port 16666
- C. UDP port 97
- D. TCP port 97
Answer: B
Explanation:
NEW QUESTION # 47
An engineer has configured guest anchoring for a newly created SSD however, the mobility tunnels are not up, and EPING is failing from the foreign WLC to the anchor WLC. Which traffic flow must be allowed at the firewall to enable the communication?
- A. IP protocol 97
- B. UDP port 16666
- C. UDP port 97
- D. TCP port 97
Answer: B
Explanation:
NEW QUESTION # 48
A wireless engineer is utilizing the voice readiness tool in Cisco Prime for a customer that wants to deploy Cisco IP phones. Which dBm range is the network inspected against?
- A. -72 to -67 dBm
- B. -78 to -65 dBm
- C. -85 to -67 dBm
- D. -85 to -65 dBm
Answer: C
Explanation:
https://www.cisco.com/c/en/us/td/docs/net_mgmt/prime/infrastructure/34/user/guide/bk_CiscoPrimeInfrastructure_3_4_0_UserGuide/bk_CiscoPrimeInfrastructure_3_4_0_UserGuide_chapter_01010.html minimum is -90 and maximum is -67 for IP phone
NEW QUESTION # 49
Refer to the exhibit.
An engineer determined that during a recent controller failure, some APs did not failover to their secondary controller based on the network design, which has sufficient licenses for all APs. The controllers are not in a mobility group but have A records for their hostnames in DNS. Which setting needs to be addressed?
- A. DNS hostnames are required to be FQDN.
- B. The AP failover priority was not set high enough.
- C. The secondary controller IP address is incorrect.
- D. The controllers must be in the same mobility group.
Answer: B
NEW QUESTION # 50
Refer to the exhibit.
Which two statements about Cisco Prime Infrastructure are true? (Choose two.)
- A. It shows the planning mode feature in Cisco Prime Infrastructure.
- B. Controllers must be synchronized with Cisco Prime Infrastructure for planning mode to work.
- C. Planning mode requires a special license in Cisco Prime Infrastructure.
- D. It presents the recommended number of APs for the selected coverage area based on the selections made.
- E. It shows the map editor feature in Cisco Prime Infrastructure.
Answer: A,B
Explanation:
NEW QUESTION # 51
An engineer must ensure that the wireless network can accomplish fast secure roaming by way of caching keys on the access points. Which key caching mechanism is enabled by default on a Cisco AireOS WLC?
- A. SKC
- B. OKC
- C. CCKM
- D. 802.11r
Answer: B
Explanation:
NEW QUESTION # 52
What causes the most signal attenuation, based on the wireless design tools?
- A. cinder block wall
- B. glass wall
- C. metal door
- D. office window
Answer: C
NEW QUESTION # 53
Which common issue causes intermittent DMVPN tunnel flaps?
- A. a suboptimal routing table
- B. a routing neighbor reachability issue
- C. that the GRE tunnel to hub router is not encrypted
- D. interface bandwidth congestion
Answer: B
Explanation:
DMVPN Tunnel Flaps Intermittently
Problem
DMVPN tunnel flaps intermittently.
Solution
When DMVPN tunnels flap, check the neighborship between the routers as issues with neighborship formation between routers may cause the DMVPN tunnel to flap. In order to resolve this problem, make sure the neighborship between the routers is always up.
Reference: http://www.cisco.com/c/en/us/support/docs/security-vpn/ipsec-negotiation-ike-protocols/29240- dcmvpn.html#Prblm1
NEW QUESTION # 54
Two cisco 5520 wireless LAN controllers are managing all access points throughout the network. The WLCs are in different locations to provide geographical redundancy a mobility group has been configured on both WLCs and has a UP status on both controllers. The Aps in location A are statically configured to use controller A as the primary and controller B as the secondary. If the WLC in location A goes offline. The Aps successfully join the WLC in location, but they do not fail over to their primary configured controller. Which configuration task fixes the issue?
- A. Change the AP Failover Priority to critical.
- B. Enable AP fallback globally on the WLC
- C. Configure the WLC in location A as primary using the CAPWAP AP Controller IP Address command on all the location A Access points.
- D. Use DHCP Option 43 and specify WLC in location A as primary.
Answer: B
NEW QUESTION # 55
An engineer is designing a wireless network to support high availability. The network will need to support the total number of APs and client SSO. Live services should continue to work without interruption during the failover Which two requirements need to be incorporated into the design to meet these needs? (Choose two.)
- A. WLC 7.5 code or more recent
- B. back-to-back direct connection between WLCs
- C. redundant WLC
- D. 10 sec RTT
- E. controller high availability pair with one of the WLCs having a valid AP count license
Answer: B,E
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/wireless/controller/technotes/7-5/High_Availability_DG.html#pgfId
NEW QUESTION # 56
Which UDP port numbers are used for exchange mobility packets in an AireOS wireless deployment?
- A. UDP 16666 for control plane, EoIP (IP protocol 97) for data plane
- B. UDP 16668 for control plane, UDP 16667 for data plane
- C. UDP 16666 for control plane, UDP 16667 for data plane
- D. UDP 16667 for control plane, UDP 16666 for data plane
Answer: C
NEW QUESTION # 57
What causes the most signal attenuation, based on the wireless design tools?
- A. cinder block wall
- B. glass wall
- C. metal door
- D. office window
Answer: C
Explanation:
NEW QUESTION # 58
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 with the worst RF characteristics
- B. the client that has the highest RF properties
- C. the client that is used most by the company
- D. the client that is used least by the company
Answer: C
Explanation:
Section: Wireless Site Survey
NEW QUESTION # 59
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