Cisco 300-425 Online Practice Questions and Exam Preparation

Cisco 300-425 Online Questions & Answers

• Question 281:

  A customer has a central Cisco WLC that manages APs in FlexConnect mode. The wireless infrastructure supports multiple small branches. One branch deploys new CCX wireless phones that are authenticated by a central Cisco ISE via PEAP/IMSCHAPv2, and traffic is switched locally. The customer must reduce the number of full authentication requests and optimize roaming for the new phones. Which action accomplishes the requirement?

  A. Enable CCKM on the voice SSID and add APs to a FlexConnect group.
  B. Enable Aironet IE on the voice SSID and add APs to an AP group.
  C. Enable Aironet IE on the voice SSID and add APs to a FlexConnect group.
  D. Enable CCKM on the voice SSID and add APs to an AP group.
  A. Enable CCKM on the voice SSID and add APs to a FlexConnect group.

  ---

  https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-1/configuration-guide/b_cg81/b_cg81_chapter_010010111.pdf IE Aironet is used to help CCX clients choice the best AP to associate but doesn't help with roaming. CCKM with Flexconnect Groups allows for fast roaming

• Question 282:

  An engineer must deploy a wireless network in an open-plan environment that has three SSIDs using the 5 GHz band and the channel width is set to 40 MHz. Co-channel interference must be reduced. Which two actions must be taken? (Choose two.)

  A. Increase the number of SSIDs.
  B. Increase channel bonding in the 2.4 GHz band to 40 MHz.
  C. Disable band steering.
  D. Decrease channel bonding in the 5 GHz band to 20 MHz.
  E. Reduce the power of the AP.
  D. Decrease channel bonding in the 5 GHz band to 20 MHz.
  E. Reduce the power of the AP.

  ---

  To reduce co-channel interference, it's beneficial to decrease channel bonding, which will increase the number of non-overlapping channels available. Reducing the power of the APs can also help minimize interference by reducing the range of each AP's signal, thereby reducing the chance of overlap.

• Question 283:

  How should the concept of mobility domains and mobility groups be explained to a customer?

  A. A mobility group does not constrain the distribution of security context of a client and also does not constrain AP fail-over between controllers when the WLC are in the same mobility domain.
  B. If WLCs are in the same mobility domain, they communicate with each other but, if an anchor WLC is present it must be in the same mobility domain for communication to be possible.
  C. If WLCs are in the same mobility domain, they communicate with each other. Mobility groups constrain the distribution of security context of a client and also constrain AP fail-over between controllers.
  D. WLCs do not need to be in the same mobility domain to communicate with each other. Mobility groups constrain the distribution of security context of a client and also constrain AP fail-over between controllers.
  C. If WLCs are in the same mobility domain, they communicate with each other. Mobility groups constrain the distribution of security context of a client and also constrain AP fail-over between controllers.

  ---

  Mobility domains and mobility groups are concepts used in Cisco wireless networking to manage client roaming and controller interaction. When Wireless LAN Controllers (WLCs) are part of the same mobility domain, they share a common database, allowing them to communicate and facilitate seamless client roaming. A mobility group is a subset of this domain, where specific WLCs work together more closely to share client context and security credentials. This ensures that when a client roams from one access point (AP) to another across different controllers, the authentication and security context are maintained, allowing for a seamless transition without the need to re-authenticate. The mobility group also manages AP fail-over between controllers, ensuring clients can maintain their connections even if their current AP fails or becomes unreachable. https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-0/configuration-guide/b_cg80/b_cg80_chapter_010011.html

• Question 284:

  The wireless survey report shows APs staggered throughout a facility, with several of them placed on the exterior walls. Other APs are located at building corners and major turns in the structure layout. Assuming that all survey locations are optimized with a minimum of -67 RSSI at cell edges with 20% overlapping cells, for which purpose is this survey model used?

  A. location services, VoIP, data, and video
  B. streaming video with VoIP, data, and HD resolution
  C. location-based services, BYOD preparation, and HD video streaming
  D. voice, data clients, and video on demand
  A. location services, VoIP, data, and video

  ---

  The survey model described is used for location services, VoIP, data, and video. The placement of APs on exterior walls, building corners, and major turns helps ensure consistent coverage and signal strength for a variety of applications, including precise location tracking and high-quality voice and video communications. References: Designing Cisco Enterprise Wireless Networks (ENWLSD 300-425)

• Question 285:

  An engineer must perform a pre-deployment site survey for a new building in a high-security area. The design must provide a primary signal RSSI of-65 dBm for the clients. Which two requirements complete This design? (Choose two)

  A. Site access
  B. AP model
  C. WLC model
  D. HAVC access
  E. Number of clients
  B. AP model
  E. Number of clients

  ---

  For a pre-deployment site survey, it's important to know the AP model to understand the capabilities and coverage pattern of the APs. Additionally, knowing the number of clients helps to design a network that can handle the expected client density. https://www.cisco.com/c/en/us/support/docs/wireless/5500-series-wireless-controllers/116057-site-survey-guidelines-wlan-00.html

• Question 286:

  A network engineer is preparing for an office site survey with a height of 2.5 meters. Which three components are recommended to complete the survey? (Choose three.)

  A. Use a battery pack to power APs
  B. Use a drawing of the office space to draw AP and client placements.
  C. Use DoS attack on APs while measuring the throughput.
  D. Use APs with directional antennas.
  E. Use APs with external antennas.
  F. Use APs with built-in antennas.
  A. Use a battery pack to power APs
  B. Use a drawing of the office space to draw AP and client placements.
  F. Use APs with built-in antennas.

  ---

  For an effective office site survey, it's recommended to: A. Use a battery pack to power APs - This allows for mobility and testing in various locations without relying on fixed power sources. B. Use a drawing of the office space to mark AP and client placements - This helps in planning the optimal locations for AP installation. F. Use APs with built-in antennas - They are commonly used for site surveys as they represent the typical deployment scenario. References: The official Cisco ENWLSD 300-425 certification guide will have more details on conducting site surveys. https://www.cisco.com/c/en/us/td/docs/wireless/technology/mesh/8-4/b_mesh_84/Site_Preparation_and_Planning.html#ID3405