300-425 practice questions 51–60

1. Question 51 · 245 in bank

   An engineer is upgrading the legacy APs to 802.11ac Wave 2 capable APs. The existing gigabit uplinked switches provide 802.3at. Which switch limitation is a concern?

   • Ainterface throughput
   • Bhigh availability
   • Ccollision domains
   • Doutput power

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   Answer: A

   Explanation

   802.11ac Wave 2 APs can support higher data rates that exceed 1 Gbps, potentially creating a bottleneck at the gigabit Ethernet interface12. This limitation can prevent the APs from achieving their full performance potential. For 802.11ac Wave 2 access points, 802.3at (PoE+) is typically required to ensure full functionality.

   Source: Adapted from community discussion — Jonycici

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2. Question 52 · 245 in bank

   A school deploys a Cisco wireless infrastructure in its classrooms to support a high density of mobile devices. The network administrator wants to bond channels in groups of two and only allow APs to send 802.11 management frames at 24 MB. What should be included in the design to accomplish this objective?

   • ASet the channel width for 802.11b to 40 MHz and set data rates to 24 MB and Mandatory.
   • BSet the channel width for 802.11a to 40 MHz and set data rates to 24 MB and Supported.
   • CSet the channel width for 802.11a to 40 MHz and set data rates to 24 MB and Mandatory.
   • DSet the channel width for 802.11b to 40 MHz and set data rates to 24 MB and Supported.

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   Answer: C

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3. Question 53 · 245 in bank

   A wireless engineer is using Ekahau Site Survey to validate that an existing wireless network is operating as expected. Which type of survey should be used to identify the end-to-end network performance?

   • AGPS assisted
   • Bspectrum analysis
   • Cpassive
   • Dactive ping

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   Answer: D

   Explanation

   Answer D - "When you perform an ACTIVE site survey to validate the network’s performance, packet loss or the packet error rate (PER) should be no greater than about 1 percent." Cisco Press Book ENWLSD - Ch5 Applying Wireless Design Requirements - You don't get performance results with a Passive Site Survey, it helps you to discover what its in the wireless network but not the performance of it.

   Source: Adapted from community discussion — Johnconnor2021

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4. Question 54 · 245 in bank

   An engineer designed a new wireless network for an enterprise customer. The customer is concerned that some wireless features may not be available because the bill of materials has only Base and no WPlus licenses for the Cisco WLC version 8. What is the reason for the engineer to take this approach regarding the licenses?

   • AOfficeExtend AP needs a WPlus license.
   • BCAPWAP Data Encryption licenses are required for this feature.
   • CAll WLC features are available because WPLUS license is now included in the Base license.
   • DTo have all the features, Plus licenses must be installed on the WLC.

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   Answer: C

   References

   • Cisco documentation
   • Cisco documentation
   • Cisco documentation

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5. Question 55 · 245 in bank

   DRAG DROP - A wireless consultant is creating a wireless design for a multistory building. The building will house several groups that will use the wireless network for different operations. Depending on how the wireless network is used, different wireless approach designs must be taken. Drag and drop the services from the left onto the AP density levels on the right based on the wireless deployment requirements.

   

   This is an interactive task on the real exam — a drag-and-drop, hotspot or ordering question. There is nothing to select here, so the answer is shown below for reference.

   Show the answer figure

   Answer: See figure below

   

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6. Question 56 · 245 in bank

   

   Refer to the exhibit. Client A is roaming from AP1 on WLC1 to AP2 on WLC2. The client roams between two APs registered to two different controllers. The WLAN on the two controllers is on a different subnet. Which scenario explains the client's roaming behavior?

   • AThe client database entry is different than that of Layer 2 roam. (Instead of copying, it moves the database to the new controller.)
   • BThe client database entry is different than that of Layer 2 roam. (Instead of moving, it copies the database to the new controller.)
   • CThe client database entry is different than that of Layer 2 roam because the client database is neither moved nor copied into the new controller.
   • DThe client database remains in the mobility anchor controller and it is not copied or moved.

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   Answer: B

   Explanation

   Layer 3 roaming is similar to Layer 2 roaming in that the controllers exchange mobility messages on the client roam. However, instead of moving the client database entry to the new controller, the original controller marks the client with an “Anchor” entry in its own client database. The database entry is copied to the new controller client database and marked with a “Foreign” entry in the new controller. The roam remains transparent to the wireless client, and the client maintains its original IP address

   Source: Adapted from community discussion — Lakshan__97

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7. Question 57 · 245 in bank

   An engineer working for an enterprise deployed multiple Cisco WLCs. A controller that sits in the R&D division is connected through a firewall and is part of the same mobility group. The engineer must ensure that the mobility tunneling is available through the firewall and test it as R&D engineers roam the production floor within their department. How is this requirement met?

   • Amping on UDP port 16666 and eping on Protocol 96 between management ports
   • Bmping on UDP port 16666 and eping on Protocol 97 between management ports
   • Cmping on UDP port 16667 and eping on Protocol 97 between management ports
   • Dmping on UDP port 16667 and eping on Protocol 96 between management ports

   Show answer

   Answer: B

   Explanation

   B is correct Legacy controller platforms that are based on AireOS software prior to release 8.5 transport mobility messages over Ethernet-over-IP (EoIP) tunnels (IP protocol 97) and UDP port 16666.

   Source: Adapted from community discussion — Lakshan__97

   References

   • Cisco documentation

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8. Question 58 · 245 in bank

   An engineer is designing a solution where guests terminate on an anchor controller in the DMZ. The engineer is having issues and wants to test connectivity between members of a mobility group. Which command must be issued to test whether a mobility control packet is able to be reached over the management interface?

   • Ashow logging
   • Bmping
   • Ceping
   • Dtracert

   Show answer

   Answer: B

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9. Question 59 · 245 in bank

   A customer uses a Cisco Catalyst 9800 Series wireless controller to manage all of the APs for a campus network. Secure guest access is required for the guest network. A Cisco 5520 anchor controller is deployed within a DMZ. Which design approach ensures that the mobility tunnel is established successfully between the wireless controller and the anchor controller?

   • ARun an Inter-Release Controller Mobility compatible software version on the wireless controller.
   • BEnable control plane encryption on the wireless controller.
   • CDisable data link encryption on the anchor controller.
   • DRun an Inter-Release Controller Mobility compatible software version on the anchor controller.

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   Answer: D

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10. Question 60 · 245 in bank

    An engineer is working for a manufacturing company that has a centralized deployment model. Guests at headquarters need wireless access for presentations, demonstrations, and sharing of information. The engineer must provide external users with secure guest access by connecting to anchor controllers on the DMZ. Auto-Anchor Mobility has been selected in the mobility group to accomplish it. Both anchors are configured as part of the mobility group for HQ. Which design approach ensures that clients connect to the primary controller first and are pushed to the secondary if the primary fails?

    • ASet the Anchor priority for the primary controller to 1.
    • BSet the Anchor priority for the secondary controller to 1.
    • CConfigure ECMP but weigh the cost to be higher to go to the primary.
    • DConfigure ECMP but weigh the cost to be higher to go to the secondary.

    Show answer

    Answer: A

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300-425 practice, question 51. 245 questions available.