Cisco 300-425 Online Practice Questions and Exam Preparation

Cisco 300-425 Online Questions & Answers

• Question 101:

  Refer to the exhibit.

  

  Which two statements about Cisco Prime Infrastructure are true? (Choose two.)

  A. It presents the recommended number of APs for the selected coverage area based on the selections made.
  B. Planning mode requires a special license in Cisco Prime Infrastructure.
  C. It shows the map editor feature in Cisco Prime Infrastructure.
  D. Controllers must be synchronized with Cisco Prime Infrastructure for planning mode to work.
  E. It shows the planning mode feature in Cisco Prime Infrastructure.
  A. It presents the recommended number of APs for the selected coverage area based on the selections made.
  E. It shows the planning mode feature in Cisco Prime Infrastructure.

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  Prime Infrastructure planning mode lets you calculate the number of access points (APs) required to cover an area by placing fictitious APs on a map and viewing the coverage area. Based on the throughput specified for each protocol (802.11a/n or 802.11b/g/n), planning mode calculates the total number of APs required to provide optimum coverage in your network. https://www.cisco.com/c/en/us/td/docs/net_mgmt/prime/infrastructure/3-2/user/guide/ bk_CiscoPrimeInfrastructure_3_2_0_UserGuide/bk_CiscoPrimeInfrastructure_3_2_0_UserGuide_chapter_0111.html

• Question 102:

  An engineer is designing a point-to-multipoint mesh network. Which two AP configurations must be completed for a site survey? (Choose two.)

  A. MAP hostnames
  B. Rx power
  C. mesh on 2.4 GHz band
  D. bridge group name
  E. Tx power
  B. Rx power
  E. Tx power

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  For a point-to-multipoint mesh network site survey, configuring the Rx power and Tx power is essential. Rx power will determine the sensitivity of the AP to incoming signals, which is crucial for understanding the reach of each mesh point. Tx power settings will influence the strength of the signals transmitted from the AP, affecting the network's overall coverage. References: Designing Cisco Enterprise Wireless Networks (ENWLSD 300-425)

• Question 103:

  An engineer must create data link redundancy for the company's Cisco Wireless LAN controller. The engineer has decided to configure LAG-based redundancy instead of port-based redundancy. Which three features of LAG-based redundancy influenced this decision? (Choose three.)

  A. Packets are always sent out on the same port they are received on.
  B. All interface traffic passes as long as one port is up.
  C. The same port has multiple untagged dynamic interfaces.
  D. Interface connection to two separate nonstacked switches is available.
  E. Full bandwidth of all links is available.
  F. Ports are grouped into multiple LAGs.
  A. Packets are always sent out on the same port they are received on.
  B. All interface traffic passes as long as one port is up.
  E. Full bandwidth of all links is available.

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  https://community.cisco.com/t5/wireless-mobility-documents/lag-link-aggregation/ta-p/3128669

• Question 104:

  A wireless engineer is performing a post verification of a wireless network. Which two metrics does the engineer verify to ensure that the wireless network can support voice services? (Choose two.)

  A. The coverage area must have a noise floor that does not exceed-87 dBm.
  B. The client device must have at least an-67 dBm RSSI.
  C. The rate of retransmitted packets must be 15 percent or below.
  D. The rate of retransmitted packets must be 20 percent or below.
  E. The client device must have at least an-65 dBm RSSI.
  B. The client device must have at least an-67 dBm RSSI.
  D. The rate of retransmitted packets must be 20 percent or below.

  ---

  https://www.cisco.com/c/en/us/td/docs/wireless/technology/vowlan/troubleshooting/vowlan_troubleshoot/8_Site_Survey_RF_Design_Valid.html RF Design Validation 1. The optimal VoWLAN Cell Edge recommendation is -67 dBm. 2. An optimal VoWLAN deployment will require at least a 20 percent cell overlap for 2.4 GHz and 15-20 percent for 5 GHz for access points that reside on different channels. 3. Over all Channel Utilization should be less than 50 percent. 4. The Noise floor should not exceed -92 dBm, which facilitates a Signal to Noise Ratio of 25 dB. 5. Retransmissions should be kept under 20 percent. 6. Packet Loss should remain under 1 percent and jitter should be kept to less than 100 ms.

• Question 105:

  A customer has a Cisco wireless network that supports VoWLAN services. The customer wants supported voice clients to receive roaming recommendations and suggestions from APs. This functionality must not impact non-VoWLAN clients. What should be enabled on the VoWLAN SSID?

  A. 802.11r Fast Transition
  B. 802.11k neighbor lists
  C. CCKM with 802.1X
  D. 802.11v BSS Transition Management
  D. 802.11v BSS Transition Management

• Question 106:

  A customer has restricted the AP and antenna combinations for a design to be limited to one model integrated antenna AP for carpeted spaces and one model external antenna AP with high gain antennas for industrial, maintenance, or storage areas. When moving between a carpeted area to an industrial area, the engineer forgets to change survey devices and surveys several APs. Which strategy will reduce the negative impact of the design?

  A. Resurvey and adjust the design.
  B. Deploy unsurveyed access points to the design.
  C. Deploy the specified access points per area type.
  D. Increase the Tx power on incorrectly surveyed access points.
  A. Resurvey and adjust the design.

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  The most effective way to address the issue is to resurvey the areas with the correct survey devices. This ensures that the design accurately reflects the performance characteristics of the specified access points for each area type, leading to a more reliable and efficient wireless network design tailored to each environment's specific needs.

• Question 107:

  A wireless engineer is designing a wireless network to support real-time applications over wireless. Which IEEE protocol must the engineer enables on the WLC so that the number of packets that are exchanged between an access point and client are reduced and fast roaming occurs?

  A. 802.11w
  B. 802.11r
  C. 802.11i
  D. 802.11k
  B. 802.11r

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  The IEEE 802.11r protocol, also known as Fast BSS Transition (FT), is designed to support real-time applications by enabling faster roaming between APs. This protocol reduces the number of packets exchanged during the reauthentication process when a client moves from one AP to another, thus ensuring a more seamless transition and maintaining the quality of service required by real-time applications such as voice and video conferencing. References: Designing Cisco Enterprise Wireless Networks (ENWLSD 300-425)

• Question 108:

  An engineer must speed up the reauthentication delays that are being experienced on the wireless infrastructure by deploying a key-caching mechanism. Which mechanism must be configured?

  A. PEAP
  B. FT
  C. PMF
  D. GTK-randomization
  B. FT

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  Fast Transition (FT), also known as IEEE 802.11r, is the key-caching mechanism that must be configured to speed up the reauthentication delays on the wireless infrastructure. FT allows for rapid re-authentication when roaming between access points, reducing the time required for re-establishing security keys and thus speeding up the overall process. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide Premium Edition and Practice.

• Question 109:

  An engineer is deploying new APs to serve IEEE 802.11g through 802.11ac clients and wants to use the Ekahau Site Survey tool to verify RF coverage. Management wants the engineer to verify and create coverage maps as quickly as possible. Which configuration accomplishes the goal?

  A. passive mode with two wireless adapters
  B. passive mode with one wireless adapter
  C. active mode with two wireless adapters
  D. active mode with one wireless adapter
  A. passive mode with two wireless adapters

• Question 110:

  While performing an AP-on-a-stick survey with a cell boundary of -67 dBm, an engineer is consistently reading SNR less than 15 dB in a particular area within the cell boundary. What is causing this issue?

  A. Another signal is interfering with the AP.
  B. The engineer forgot to compensate for the wall type in that area.
  C. The AP transmit power is too low.
  D. The engineer is too far from the AP.
  A. Another signal is interfering with the AP.

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  An SNR (Signal-to-Noise Ratio) less than 15 dB within the cell boundary during an AP-on-a-stick survey indicates that there is interference affecting the AP's signal. This interference could be from another signal source that is reducing the quality of the connection, despite the signal strength being within the acceptable cell boundary of -67 dBm.