Cisco 300-425 Online Practice Questions and Exam Preparation

Cisco 300-425 Online Questions & Answers

• Question 211:

  An AP is receiving 802.11 packets on its 802.11a radio with an RSSI value of -77 dBm. The current AP is part of an AP group that has been assigned an RF profile with RX-SOP set to Medium for 802.11a. Which action does the AP take with the packets?

  A. All frames are classified as non-Wi-Fi frames and are not decoded by the 5 GHz radio.
  B. Frames are decoded by the 2.4 GHz radio.
  C. All frames are classified as non-Wi-Fi frames and are not decoded by the 2.4 GHz radio.
  D. Frames are decoded by the 5 GHz radio.
  D. Frames are decoded by the 5 GHz radio.

  ---

  An RSSI value of -77 dBm is within the range that a 5 GHz radio can receive and decode, provided it's not below the RX-SOP threshold set for the RF profile. Since the RF profile is set to Medium for 802.11a, which operates in the 5 GHz band, the AP's 5 GHz radio will decode the frames.

• Question 212:

  An engineer is designing a network deployment for a technology company. The company has four buildings with access points that must provide seamless wireless coverage and client roaming. The customer data center must have two WLCs and the core switches for the network. Which type of wireless architecture must be used?

  A. cloud
  B. centralized
  C. autonomous
  D. distributed
  B. centralized

• Question 213:

  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. UDP port 16666
  B. IP protocol 97
  C. UDP port 97
  D. TCP port 97
  B. IP protocol 97

  ---

  Mobility data traffic is carried via Ethernet over IP (EoIP) which is IP protocol 97. This is the IP protocol number, not a TCP/UDP port value. Your firewall rules should allow IP protocol 97 traffic between your WLCs. For some background reading on EoIP, please see RFC3378 (...)" https://community.cisco.com/t5/wireless/eping-on-ip-port-97/td-p/1782329

• Question 214:

  An engineer added an AP to a deployment after a post-installation site survey. The engineer then notices an increase in co-channel interference and retransmissions. Which two features help mitigate the issue? (Choose two.)

  A. Cisco Compatible Extensions
  B. Transmit Power Control
  C. Enhanced Distributed Channel Access
  D. Coverage Hole Detection
  E. Dynamic Channel Assignment
  B. Transmit Power Control
  E. Dynamic Channel Assignment

  ---

  To mitigate increased co-channel interference and retransmissions after adding an AP, Transmit Power Control (TPC) and Dynamic Channel Assignment (DCA) can be effective. TPC adjusts AP transmit power based on real-time analysis of the wireless environment, reducing interference by lowering power where necessary. DCA dynamically changes channel assignments based on current RF conditions to optimize performance and minimize interference.

• Question 215:

  Clustering Cisco WLCs into a single RF group enables the RRM algorithms to scale beyond the capabilities of a single Cisco WLC. How many WLC and APs in an RF group can the controller software scale up to in WLC release 8.9 depending on the platform?

  A. up to 20 WLCs and 1000 APs
  B. up to 20 WLCs and 3000 APs
  C. up to 20 WLCs and 4000 APs
  D. up to 20 WLCs and 6000 APs
  D. up to 20 WLCs and 6000 APs

  ---

  Controller software supports up to 20 controllers and 6000 access points in an RF group https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-9/config-guide/b_cg89/radio_resource_management.html

• Question 216:

  A 60,000-square foot outdoor area must be surveyed. The survey must be completed in the least amount of time. Which tool or equipment is used when performing the site survey?

  A. additional access points that use sniffer mode
  B. site survey tool that has modules in sniffer mode
  C. additional access points that use GPS mode
  D. site survey tool that has a GPS module
  D. site survey tool that has a GPS module

  ---

  When performing a site survey of a large outdoor area, a site survey tool with a GPS module is ideal. The GPS module allows for precise location tracking, which is essential for mapping signal coverage over a large area. This tool can help complete the survey efficiently by automatically recording the location of signal measurements

• Question 217:

  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?

  A. OfficeExtend AP needs a WPlus license.
  B. CAPWAP Data Encryption licenses are required for this feature.
  C. All WLC features are available because WPLUS license is now included in the Base license.
  D. To have all the features, Plus licenses must be installed on the WLC.
  C. All WLC features are available because WPLUS license is now included in the Base license.

  ---

  In Cisco WLC version 8, the need for separate WPlus licenses has been eliminated as all features that were previously part of the WPlus license are now included in the Base license. This consolidation simplifies licensing management and ensures that customers have access to all necessary features without requiring additional licenses. References: (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide Premium Edition and Practice)

• Question 218:

  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. firewall port 16666
  E. firewall IP protocol 97

  ---

  When the mobility tunnel is not operational for the data path, it is essential to validate the network's firewall settings. Firewall port 16666 must be open to allow mobility control messages to pass through, and firewall IP protocol 97 (EtherIP) must be permitted to enable the encapsulation of IP within IP, which is necessary for the data path of the mobility tunnel. Ensuring these firewall settings are correctly configured is critical for facilitating inter-controller roaming and operational mobility tunnels.

• Question 219:

  An engineer must design and configure a wireless network for:

  1.

  pervasive coverage in an oil terminal

  2.

  casual web and email traffic

  3.

  5 GHz

  What is the best design?

  A. Keep the power assignment as auto and disable 802.11n and 802.11ac MCS rate.
  B. Disable all data rates below 24 Mbps and keep the power assignment on the AP as auto.
  C. Keep all the data rates enabled and set the AP power assignment mode to auto.
  D. Disable all data rates below 54 Mbps and assign static power level 1 on all access points.
  B. Disable all data rates below 24 Mbps and keep the power assignment on the AP as auto.

  ---

  For pervasive coverage in an oil terminal that supports casual web and email traffic over 5 GHz, disabling lower data rates can help improve overall network efficiency. Lower data rates can cause the network to slow down because they take up more airtime. By disabling rates below 24 Mbps, the APs can focus on providing higher throughput for users. Keeping the power assignment as auto allows the APs to adjust their power levels dynamically for optimal coverage and client performance

• Question 220:

  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 using to identify the end-to-end network performance?

  A. GPS assisted
  B. Spectrum analysis
  C. Passive
  D. Active ping
  D. Active ping

  ---

  An active ping survey is used to validate network performance by sending and receiving data packets to measure the end-to-end network performance, including latency, packet loss, and throughput. Ekahau site survey tools can perform active ping surveys to test the connectivity and performance of the wireless network, ensuring that it operates as expected and meets the required service levels. References: Configuring Active Surveys ?Ekahau Customer Support