Cisco 300-425 Online Practice Questions and Exam Preparation

Cisco 300-425 Online Questions & Answers

• Question 141:

  An engineer is designing a network deployment for a college with six buildings Each building must have a WLC located in the IDF to support the APs. The wireless clients should be able to roam between the APs and the controllers. Which type of wireless architecture should be used?

  A. Distributed
  B. Centralized
  C. Cloud
  D. Autonomous
  A. Distributed

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  https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Mobility/emob41dg/emob41dg-wrapper/ch2_Arch.html

• Question 142:

  In a warehouse deployment, why is a predictive survey often insufficient?

  A. Predictive surveys cannot account for metal racks and variable inventory
  B. Warehouses do not require Wi-Fi coverage
  C. Predictive surveys are more expensive than passive surveys
  D. Warehouses always use only 2.4 GHz Wi-Fi
  A. Predictive surveys cannot account for metal racks and variable inventory

• Question 143:

  Which antenna type is most appropriate for outdoor Wi-Fi coverage across a campus quad?

  A. Patch antennas
  B. Yagi directional antennas
  C. Omni-directional antennas
  D. Dipole antennas
  C. Omni-directional antennas

• Question 144:

  What is the wireless signal loss of large cases of liquid materials being stored in a warehouse environment?

  A. It is higher than dry goods.
  B. It is not impactful to the RF design.
  C. It is less than dry goods.
  D. It is impactful but overall negligible to the RF design.
  A. It is higher than dry goods.

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  Large cases of liquid materials can cause higher signal loss compared to dry goods due to the way radio frequency (RF) waves interact with liquid, which can absorb and reflect the signals more than dry materials.

• Question 145:

  What is the minimum recommended RSSI for designing a WLAN to support data applications?

  A. -67 dBm
  B. -70 dBm
  C. -75 dBm
  D. -80 dBm
  B. -70 dBm

• Question 146:

  An engineer is performing an active survey of a network that must support different types of mobile devices. The devices must be able to run an application that requires a minimum RF of -73 dBm. Which mobile device must be used for the survey?

  A. one that has a receiver sensitivity of -70 dBm
  B. one that has the lowest receiver sensitivity
  C. one that has the most updated wireless card
  D. one that has 802.11a wireless support
  A. one that has a receiver sensitivity of -70 dBm

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  For an active survey where the application requires a minimum RF of -73 dBm, the mobile device used for the survey should have a receiver sensitivity of -70 dBm or better. This ensures that the device is sensitive enough to detect the minimum required signal strength for the application to function properly.

• Question 147:

  When designing for voice over WLAN, what is the recommended cell overlap percentage between adjacent APs?

  A. 10%
  B. 20%
  C. 15%
  D. 30%
  B. 20%

• Question 148:

  A customer deploys a new Cisco high-density wireless network within the open areas of a mall to provide free public wireless on 5 GHz. The existing mall tenants have their own wireless networks that are independently managed. Which design approach minimizes channel utilization for the public network?

  A. Enable all 5-GHz channels that are supported by the region and use 40-MHz channels.
  B. Enable UNII-1 channels only and use 80-MHz channels.
  C. Enable UNII-1 channels only and use 20-MHz channels.
  D. Enable all 5-GHz channels that are supported by the region and use 20-MHz channels.
  C. Enable UNII-1 channels only and use 20-MHz channels.

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  To minimize channel utilization and interference with existing tenant networks, it's best to use the UNII-1 channels, which are typically less congested, and stick to 20-MHz channels to provide more non-overlapping channels and reduce co-channel interference.

• Question 149:

  Which statement about the 9800 Series Wireless Controller mobility tunnel on a Cisco Catalyst 9800 controller is true?

  A. It is an IPsec tunnel with control path only.
  B. It is a CAPWAP tunnel with data path only.
  C. It is a CAPWAP tunnel with control path and data path.
  D. It is an IPsec tunnel with control path and data path.
  C. It is a CAPWAP tunnel with control path and data path.

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  The 9800 Series Wireless Controller uses CAPWAP tunnels to encapsulate and transport both control and data traffic between access points and the controller. This allows for centralized management and control while also enabling efficient data forwarding. https://www.cisco.com/c/en/us/td/docs/wireless/controller/9800/config- guide/b_wl_16_10_cg/mobility.html

• Question 150:

  An engineer must install an outdoor wireless network for an area with a direct line of sight. The outdoor APs are in an open area with a history of harsh weather. Which two parameters must the engineer consider to prevent an outdoor wireless outage? (Choose two.)

  A. lightning arrestor installation
  B. antenna cable grounding
  C. cable strength
  D. cable length
  E. elimination of trees
  A. lightning arrestor installation
  B. antenna cable grounding

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  For outdoor wireless networks, especially in open areas prone to harsh weather, it's crucial to install lightning arrestors to protect against electrical surges caused by lightning strikes. Additionally, grounding the antenna cables helps dissipate any electrical charge that could damage the equipment.