300-425 Online Practice Questions and Answers

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

What is the recommended cell overlap when designing a wireless network for Cisco Hyperlocation?

A. 20%

B. 30%

C. 40%

D. 50%

A customer has noticed that Client Band Select is enabled and no clients are utilizing the 5 GHz band. Which three parameters must be met to ensure that wireless clients use the 5 GHz band? (Choose three.)

A. Ensure that channel bonding is enabled on the WLAN.

B. Ensure that the co-channel interference has not exceeded-85 dBm.

C. Ensure that the UNII-2 extended channels are enabled on the 802.11a radios.

D. Ensure that the client is receiving RSSI above the minimum band select RSSI threshold.

E. Ensure that the client is dual-band capable.

F. Ensure that the WLAN has 802.11a enabled.

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.

An engineer must perform a predictive design for a wireless network. The customer has devices that can tolerate at most 100 ms of delay when roaming. Which design criteria must be used?

A. location

B. data

C. video

D. voice

A wireless engineer must design a backhaul link. The engineer has a mesh access point that has a wired connection back to the infrastructure. What must be changed in the AP role before a change is made in the AP mode?

A. monitor

B. RAP

C. bridge

D. local

An engineer must perform a predictive design for a wireless network for location readiness and to mitigate interference. Which power level does the engineer use?

A. 10 mw

B. 18 mw

C. 20 mw

D. 50 mw

A university lecture hall has a Cisco wireless high-density network with this configuration: 5 GHz only 20-MHz channels UNII-1, UNII-2, and UNII2-E channels TPC minimum = 8 TPC maximum = 14

The lecture hall is 200 feet by 100 feet and has 16 Cisco APs that use directional antennas. Which feature must be included in the design to mitigate and reduce high-channel utilization from rogue APs?

A. band select

B. DFS detection

C. RxSOP

D. 802.11w

An architect configures a set of AirOS controllers to be in the same mobility group as the existing controllers. The implementation should facilitate inter-controller roaming for users in their new campus. After the configuration, the mobility tunnel is not operational for the data path in the network. Which two validations should be performed? (Choose two.)

A. firewall port 16666

B. mping

C. eping

D. rping

E. firewall IP protocol 97

A customer has two Cisco wireless controllers named WLC-A and WLC-B. Each controller is in a different building on a campus. The WLCs have different Layer 3 interfaces and broadcast the same SSIDs from their respective APs. Users must remain connected to the same VLAN and maintain their IP addresses during roaming from the APs that are attached to WLC-A and WLC-B. Which action accomplishes the requirement?

A. Create a mobility group between the two WLCs to allow auto-anchoring.

B. Create an SSO cluster to ensure that client sessions sync between WLCs.

C. Enable 802.11r on each SSID on both WLCs to allow caching of the PMK.

D. Enable AP groups using the same name on both WLCs for each group.

A network engineer must design a new wireless solution for a company, but the budget can only stretch to include a single Cisco 9800-40 WLC. The company requires high availability between the WLC and the core switch in the event of a cable failure. The WLC must dynamically manage port redundancy and perform load balancing between APs transparently. Which design approach must the engineer take to meet the requirements?

A. LAG

B. Multi-LAG

C. LACP D. PAgP

After the completion of a site survey with Ekahau Site Survey tool, using the default color palette, it is noted that multiple areas are shown as white on the heat map when viewing 5 GHz signal strength data. What does this indicate about the signal strength?

A. The area is below -67 dBm at coverage cell edge.

B. The area is below -100 dBm at coverage cell edge.

C. The area is below the minimum threshold configured on the tool.

D. The area is below the detectable level and indicates no RF signal.

A community bank has three campus locations and one HQ with the data center operations. Each campus location has four Cisco Catalyst 9120 APs. The data center has a Catalyst 9800 WLC with eight Catalyst 9120 APs. Poor WAN uplinks cause impacted branch AP and wireless client connectivity back to HQ, and each campus location is now planned to have its own EWC controller based on C9120 AP to keep traffic local. This new design must accommodate these requirements:

1.

Guest WLAN will be routed locally.

2.

Employee WLAN must be authenticated 802.1x PEAP via HQ data center ISE but can pass traffic locally once authenticated.

3.

HQ WLC will be the primary backup WLC for each WLC.

Which design approach should the consulting engineer take?

A. Two C9120 campus APs must be converted to EWC mode, one for the active controller and the other for standby with HQ WLC set as N+1 backup. The campus guest WLAN will use the guest anchor to HQ WLC for guest VLAN access, and employee WLAN will need the HQ AAA server to be added to EWC and then use that to perform the 802.1x authentication.

B. One C9120 campus AP must be converted to EWC mode, and the preferred controller is set to that AP with HQ WLC should be paired as mobility peer and configured as N+1 backup. The campus guest WLAN will use local web auth on guest VLAN. The campus employee WLAN will need the guest anchor back to the HQ employee WLAN.

C. Two C9120 campus APs must be converted to EWC mode, one for the active controller and the other for standby set as N+1 backup. The campus guest WLAN will use local web auth on guest VLAN, and employee WLAN will need the HQ AAA server added to EWC.

D. One C9120 AP in each campus must be converted to EWC mode, and the preferred controller is set to that AP with HQ WLC set as N+1 backup. The campus guest WLAN will use local web auth on guest VLAN, and employee WLAN will need the HQ AAA server to be added to EWC.

An engineer must design a WLAN that can handle voice traffic and location-based services. Which two design features enable both services to function properly? (Choose two.)

A. Use every channel possible in 5 GHz.

B. Put APs in corners of each floor for triangulation.

C. Have a 15% overlap of cell coverage.

D. Use every channel possible in 2.4 GHz.

E. Have a 25% overlap of cell coverage.

An engineer has been tasked with optimizing roaming for all the wireless networks used by shops located in a shopping center. A unique WLAN is assigned to each individual shop named ret470632970B55XX, where the last two digits indicate the shop's location. The wireless network consists of 9800 controllers and Cisco 9100 APs. What should the engineer configure on the controllers to optimize roaming?

A. assign access rules based on location

B. disable the 802.11a/b network

C. enable AES encryption

D. create an interface per shop