Designing Cisco Enterprise Wireless Networks (ENWLSD)245 questions across 25 pages are complete and free, with no account or card.
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An engineer must create a multicampus architecture wireless design to accommodate 4500 access points for wireless data and guest access. Which model controller fits the requirements to support all access points on one high availability controller setup?
Answer: D
A wireless network consists of: • two IOS XE controllers installed in a data center • 9100 series APs • corporate and a guest WLAN The customer must high availability pair two Cisco WLCs for the client SSO. Which two design approaches must the engineer take to meet the requirement? (Choose two.)
Answer: DE
DE Both devices must run the same version of software. Both devices must have redundant IPs in the same subnet. IP addresses used for redundancy must be unroutable without a gateway present in the subnet. https://www.cisco.com/c/en/us/support/docs/wireless/catalyst-9800-series-wireless-controllers/213915-configure-catalyst-9800-wireless-control.html#toc-hId--1820882626
Source: Adapted from community discussion — Bandito
A customer has this wireless design: • two Cisco Catalyst 9800 Series wireless controllers that are configured in a high-availability SSO cluster to manage the APs in a local office network • 100 APs in local mode that are registered to the high-availability cluster • one Catalyst 9800 Series wireless controller that is deployed as an anchor in a DMZ • a CAPWAP tunnel in UP state between the high-availability cluster and the anchor WLC The customer wants the anchored traffic to remain up if a single WLC in the high-availability cluster fails. How must this requirement be incorporated into the design?
Answer: D
Refer to the exhibit. A network engineer has identified that during a recent controller failure, several APs failed over to the tertiary controller instead of the secondary controller. The configuration from one of the APs is provided. Which design consideration led to the issue?
Answer: A
I think the answer is A, because there is no automatic priority to an HA-SKU controller. If some AP landed on the tertiary controller, that has to be because the second one was at capacity.
Source: Adapted from community discussion — Bandito
During a post deployment site survey, issues are found with non-Wi-Fi interference. What should the engineer use to identify the source of the interference?
Answer: B
B. Download Cisco Spectrum Expert, deploy a spare AP where you want to see the the live RF spectrum and put the AP into SE-Connect mode in Prime & let it reboot. Putty to controller, and do 'show ap config , take note of the RF Key string (note: this string appears to change on every reboot!), Run the Spectrum Expert client software and connect to the AP's IP Address using the current RF key. Marvel at being able to see microwave ovens wreck your 2.4GHz in real time then get kudos from your boss that you're doing Layer 1 survey without spending money on pricey airmagnet/ekahau equipment.
Source: Adapted from community discussion — HealthyGeneral
A customer has a single anchor WLC named Anchor A. Anchor A is in a DMZ and provides guest access. The customer wants to deploy an additional anchor controller named Anchor B to provide redundancy if Anchor A fails. Which design approach should be taken for the guest WLAN priority on the foreign WLC for each anchor WLC?
Answer: D
Priority values range from 1 (high) to 3 (low) or primary, secondary or tertiary and defined priority is displayed with guest anchor. https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-10/config-guide/b_cg810/configuring_auto_anchor_mobility.html
Source: Adapted from community discussion — Yetiitey
An engineer needs a wireless design to provide redundancy for APs at remote sites that are connected to Cisco 3504 Wireless LAN Controllers. The central Cisco 5520 Wireless LAN Controller supports 2000 APs and has 1975 access points associated to it. The engineer decides that not all APs at the remote sites must remain functional in the event of a failure. How does the engineer ensure that the most important access points at the remote sites remain online while not impacting the main site?
Answer: A
AP fallback is something different , AP failover priority is the KEY her e, from 5520 nothing should not happen to the 1975 APs . only the most important 25 APs from remote site should be conneted here .which means most important 25 Aps should have priority more than 1975 APs.
Source: Adapted from community discussion — Lakshan__97
Based on a wireless network design, an engineer configured a primary and secondary controller for their APs. A power interruption caused the primary Cisco WLC to go down, and, as expected, all APs joined the secondary controller. When the primary controller came back up, all the APs remained joined to the secondary controller. Which approach must the engineer take for the APs to move back to the primary?
Answer: C
A customer uses a Cisco 5520 WLC that is connected via a single 10-GB interface to manage the wireless network. The wireless network includes 500 APs for the campus network. The customer wants to add 300 APs and is concerned about traffic load and lack of redundancy. The purchase of a second controller is not an option. Which design approach mitigates the customer concerns?
Answer: B
B and D can be the answers , since it says purchase an additional controller is not an option (assume that even physical or virtual ). 5520 has 2 x 10Gports . so second port can be connected and make a LAG to increase the bandwisth and port redundancy
Source: Adapted from community discussion — Lakshan__97
A customer with two Cisco 5520 WLCs that work as a primary and secondary had some switching issues and the primary controller lost connectivity. Immediately all APs went to discovery and joined the secondary controller. After recovering from the issue, the primary controller is online, but no APs return to it. All APs remain in the secondary controller. Which setting advises the APs to return to their primary controller?
Answer: A
If the primary fails, the AP will try to join the secondary until it fails. Even if the primary controller is put back into service, the AP will stay with the secondary. You can change that behavior by enabling the AP Fallback feature
Source: Adapted from community discussion — Lakshan__97
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