Cisco 300-425 Online Practice Questions and Exam Preparation

Cisco 300-425 Online Questions & Answers

• Question 231:

  Why is the 2.4 GHz band generally avoided in high-density enterprise designs?

  A. It has more available channels than 5 GHz
  B. It supports only 802.11ac
  C. It has fewer non-overlapping channels and more interference
  D. It requires directional antennas
  C. It has fewer non-overlapping channels and more interference

• Question 232:

  An engineer has performed a predictive site survey for high-speed data and voice in an indoor office. What is the recommended data rate with-67 dBm signal level for optimal VoWLAN design?

  A. 6 Mbps on 802.11 bgn
  B. 24 Mbps on 802.11 bgn
  C. 12 Mbps on 802.11 an
  D. 24 Mbps on 802.11 an
  C. 12 Mbps on 802.11 an

  ---

  `For voice or real-time application support, 12Mbps is common, and 24Mbps is expected if real-time video applications (for example, video conferencing) are your target. Here again, as most cells carry both data and voice, designing around 12Mbps minimum has become common even for data-only support, in anticipation of occasional voice activity.' Official Cert Guide, Ch.3. p.60. para.3.`As you plan the band and channel assignment for each AP, try to leverage the 5GHz band as much as possible.' Official Cert Guide, Ch.5. p.106. para.4.`You should configure 12Mbps as the lowest and only mandatory data rate, while disabling all rates below that.' Official Cert Guide, Ch.5. p.107. para.2.

• Question 233:

  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?

  A. Set the channel width for 802.11b to 40 MHz and set data rates to 24 MB and Mandatory.
  B. Set the channel width for 802.11a to 40 MHz and set data rates to 24 MB and Supported.
  C. Set the channel width for 802.11a to 40 MHz and set data rates to 24 MB and Mandatory.
  D. Set the channel width for 802.11b to 40 MHz and set data rates to 24 MB and Supported.
  C. Set the channel width for 802.11a to 40 MHz and set data rates to 24 MB and Mandatory.

  ---

  To support a high density of mobile devices and bond channels in groups of two, the channel width for 802.11a should be set to 40 MHz. Setting the data rates to 24 MB and Mandatory ensures that only APs can send 802.11 management frames at this rate, which helps in managing the airtime fairness. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide.

• Question 234:

  An engineer has successfully configured high availability and SSO using two Cisco 5508 Wireless LAN Controllers. The engineer can access the Active Primary WLC, but the Secondary Standby WLC is not accessible. Which two methods allow access to the standby unit? (Choose two.)

  A. via the console connection
  B. SSH to the redundancy management interface of the primary WLC
  C. SSH to the service port interface
  D. SSH to the virtual interface of the secondary WLC
  E. SSH to the management interface of the primary WLC
  A. via the console connection
  C. SSH to the service port interface

  ---

  In a high availability setup with Cisco 5508 Wireless LAN Controllers, the standby controller can be accessed via the console connection and the service port interface. The console provides direct access, while the service port interface allows for network-based access to the standby unit for management purposes.

• Question 235:

  Which Cisco technology improves the signal quality for clients at the edge of a cell by optimizing beamforming?

  A. CleanAir
  B. ClientLink
  C. FastLane
  D. FlexConnect
  B. ClientLink

• Question 236:

  A stadium deployment requires handling a very high number of clients per AP. Which design principle should be applied?

  A. Enable 160 MHz channels for maximum throughput
  B. Reduce cell size and increase AP density
  C. Use omnidirectional antennas only
  D. Increase AP transmit power to cover more area
  B. Reduce cell size and increase AP density

• Question 237:

  An engineer is working for an enterprise and deployed a Cisco 9800 Series Wireless Controller. The wireless infrastructure serves the employees and guest users across the company. The engineer must configure the controller to alleviate the sticky client issue in the deployment. Which action resolves the issue?

  A. Enable CHDM.
  B. Enable Optimize Roaming.
  C. Enable 802.11k.
  D. Enable data RSSI to -90db.
  B. Enable Optimize Roaming.

  ---

  The sticky client issue occurs when a wireless client device clings to a suboptimal access point instead of roaming to a better one with a stronger signal. Enabling Optimize Roaming on the Cisco 9800 Series Wireless Controller can alleviate this issue. This feature prompts clients to roam by disassociating them when their signal strength drops below a threshold, encouraging them to seek a better connection.

• Question 238:

  An engineer performs a wireless site survey of a multi-floor building for 2.4-GHz and 5-GHz bands. The customer wants to identify non-802.11 sources of interference. Which survey measurement must be included in the survey?

  A. channel utilization
  B. spectrum analysis
  C. signal-to-noise ratio
  D. co-channel interference
  B. spectrum analysis

• Question 239:

  A wireless consultant reviewing the installation of an old wireless network. The existing AireOS controllers are running software version 6.0.4539:44024. The customer is using OEAP and wants to keep this functionality. Which licenses should the consultant propose with the latest controller software version?

  A. Base
  B. Premium
  C. WPlus
  D. Advanced
  C. WPlus

  ---

  The WPlus license is suitable for environments using OfficeExtend Access Points (OEAP), which allows employees to work from home with a seamless connection to the corporate wireless network. The WPlus license enables features such as advanced security and increased scalability for remote workers. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide.

• Question 240:

  A rapidly expanding company has tasked their network engineer with wirelessly connecting a new cubicle area with Cisco workgroup bridges until the wired network is complete. Each of 42 new users has a computer and VoIP phone. How many APs for workgroup bridging must be ordered to keep cost at a minimum while connecting all devices?

  A. 4
  B. 5
  C. 6
  D. 7
  B. 5

  ---

  A Cisco WGB provides information about its wired clients via Internet Access Point Protocol (IAPP) messaging. This enables the wireless infrastructure to know the MAC addresses of the WGB's wired clients. Up to 20 wired clients are supported behind a Cisco WGB. https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-1/configuration-guide/b_cg81/workgroup_bridges.pdf