Cisco 300-425 Online Practice Questions and Exam Preparation

Cisco 300-425 Online Questions & Answers

• Question 221:

  A technician connects a Cisco Aironet 3700 Series access point to a switch and realizes that the AP is coming up with 3x3 MIMO. Which reason explains this behavior?

  A. A redundant power supply is unavailable on the switch.
  B. The switch is 802.3af capable.
  C. The AP is getting power from a power injector.
  D. The switch is PoE+ capable.
  B. The switch is 802.3af capable.

• Question 222:

  An engineer is designing a new wireless network. The network needs to meet these requirements:

  

  Which design approach should be taken?

  A. 5 GHz frequency band with channel bonding, to support 40 MHz channels
  B. 5 GHz frequency band without channel bonding, to support 20 MHz channels
  C. 5 GHz frequency band with channel bonding, to support 80 MHz channels.
  D. 2.4 GHz frequency band without channel bonding, to support 20 MHz channels
  B. 5 GHz frequency band without channel bonding, to support 20 MHz channels

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  Explanation Explanation/Reference:The design approach should use the 5 GHz frequency band without channel bonding to support 20 MHz channels. This provides a balance between network capacity and interference mitigation. https://www.cisco.com/c/en/us/support/docs/wireless/4400-series-wireless-lan- controllers/108184-config-802-11n-wlc.html

• Question 223:

  Which Cisco feature proactively detects and mitigates interference from non-Wi-Fi devices?

  A. CleanAir
  B. ClientLink
  C. Band Select
  D. FastLane
  A. CleanAir

• Question 224:

  A customer requires fast secure roaming for Voice over WLAN. Which protocol should you recommend?

  A. WPA2-PSK
  B. 802.11r
  C. TKIP
  D. WEP
  B. 802.11r

• Question 225:

  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?

  A. Set Anchor A to priority 3 and Anchor B to priority 3.
  B. Set Anchor A to priority 3 and Anchor B to priority 1.
  C. Set Anchor A to priority 1 and Anchor B to priority 1.
  D. Set Anchor A to priority 1 and Anchor B to priority 3.
  D. Set Anchor A to priority 1 and Anchor B to priority 3.

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  In a wireless network design where redundancy is required for guest access, setting different priorities for the anchor controllers ensures that one serves as the primary and the other as a backup. Anchor A, being the primary controller, should have a higher priority (lower numerical value), making it the preferred choice for guest WLAN connections. Anchor B, as the secondary or backup controller, should have a lower priority (higher numerical value) so that it is used only if Anchor A fails. This approach provides a failover mechanism for guest access in the DMZ.

• Question 226:

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

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  To maintain the same VLAN and IP address for users roaming between APs attached to different WLCs, a mobility group should be created between WLC-A and WLC- B. This allows for inter-controller roaming, where client sessions are maintained across different controllers, ensuring that users can move across the campus without losing connectivity or changing IP addresses. References: Cisco's official training and certification resources.

• Question 227:

  An engineer is designing a wireless deployment for a university auditorium. Which two features can be used to help deal with the issues introduced by high AP count? (Choose two.)

  A. TSPEC
  B. RXSOP
  C. TPC
  D. LSS
  E. DFS
  B. RXSOP
  C. TPC

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  RXSOP (Receive Start of Packet Detection Threshold) and TPC (Transmit Power Control) are two features that can help manage the challenges associated with a high AP (Access Point) count in a dense environment like a university auditorium. RXSOP can be adjusted to refine how APs differentiate between noise and valid packets, which is particularly useful in high-density areas where multiple APs might otherwise respond to the same signal. TPC helps in managing the transmit power of APs, allowing for better coverage and reduced interference among APs that are in close proximity to each other. References: Designing Cisco Enterprise Wireless Networks (ENWLSD 300-425) https://www.cisco.com/c/ en/us/support/docs/wireless-mobility/80211/200069-Overview-on- 802-11h-Transmit-Power-Cont.html

• Question 228:

  A wireless engineer must design mobility between two buildings at a campus site. The engineer has one controller at each site. The engineer is investigating inter-controller CAPWAP data and control traffic. Which two ports must be open? (Choose two.)

  A. 5246
  B. 5247
  C. 8443
  D. 16666
  E. 16667
  D. 16666
  E. 16667

• Question 229:

  An engineer is setting up the WLC to support a high-density design for a lecture hall. The engineer must modify the existing high-density RF profile to obtain a smaller cell size. Also, the clients must connect to the nearest AP using the highest possible data rates. Which setting allows this design?

  A. AP load balance
  B. client distribution
  C. power threshold
  D. RX-SOP threshold
  C. power threshold

• Question 230:

  Which feature must be incorporated into the network design to allow seamless Layer 3 roaming between controllers?

  A. Same VLANs across controllers
  B. Mobility groups
  C. Client load balancing
  D. Link aggregation
  B. Mobility groups