Cisco 300-425 Online Practice Questions and Exam Preparation

Cisco 300-425 Online Questions & Answers

• Question 121:

  A network engineer is working on a predictive WLAN design, the new wireless network must support access to Internet, email, voice, and the inventory database, to successfully support these services, which configuration must the engineer use for the signal strength levels and SNR on the planning tool?

  A. signal strength of -67 dBm, 25-dB SNR, and maximum 1 percent packet loss.
  B. signal strength of -67 dBm, 20-dB SNR, and maximum 5 percent, packet loss.
  C. signal strength of -67 dBm, 20-dB SNR, and maximum 1 percent packet loss.
  D. signal strength of -70 dBm,30-dB SNR. and maximum 10 percent packet loss.
  A. signal strength of -67 dBm, 25-dB SNR, and maximum 1 percent packet loss.

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  For a WLAN design that supports services like internet, email, voice, and database access, a signal strength of -67 dBm is considered good for voice and streaming services. A 25-dB SNR (Signal-to-Noise Ratio) is also desirable for high-quality voice and video applications, and a maximum of 1 percent packet loss is acceptable to ensure reliable connectivity and service quality. https://www.cisco.com/c/en/us/support/docs/wireless/5500-series-wireless-controllers/116057sitesurvey-guidelines-wlan-00.html

• Question 122:

  A wireless network consists of:

  1.

  two IOS XE controllers installed in a data center

  2.

  9100 series APs

  3.

  corporate and a guest WLAN

  The customer must high availability pair two Cisco WLCs for the client SSO.

  Which two design approaches must the engineer take to meet the requirement? (Choose two.)

  A. The controllers must have the same number of licenses.
  B. Both WLCs must have the same redundancy management IP address.
  C. Both WLCs must have the same service port IP address.
  D. Each WLC must have a unique redundancy management IP address.
  E. The controllers must run the same operating system version.
  D. Each WLC must have a unique redundancy management IP address.
  E. The controllers must run the same operating system version.

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  Both devices must run the same version of software. Both devices must have redundant IPs in the same subnet. IP addresses used for redundancy must be unroutable without a gateway present in the subnet. https://www.cisco.com/c/en/us/support/docs/wireless/catalyst-9800-series-wirelesscontrollers/213915-configure-catalyst-9800-wireless-control.html#toc-hId--1820882626

• Question 123:

  During a wireless design, why should DFS (Dynamic Frequency Selection) channels be used cautiously?

  A. They provide less throughput.
  B. They can cause interference with Bluetooth devices.
  C. They may be subject to radar interference and APs must vacate the channel.
  D. They are not supported on 802.11ac.
  C. They may be subject to radar interference and APs must vacate the channel.

• Question 124:

  An engineer created a design where the HQ has a Cisco 5520 Wireless LAN Controller with 2000 APs associated to it. If a controller at one of the remote sites fails, the APs at that site fall back to a central controller. Global AP Failover Priority must be enabled. Which design approach must be taken to prevent the critical APs at HQ from going down and still allow APs to failover to the HQ controller?

  A. Set all the APs at HQ to a failover priority of "high" and set the remote site APs to "normal".
  B. Set all the APs at HQ to a failover priority of "medium" and set the remote site APs to "high".
  C. Ensure that the critical APs at HQ have a failover priority of "critical", leave the rest of the HQ APs at "medium", and set the remote site APs to "high".
  D. Create an access list on the HQ router that blocks CAPWAP discovery on UDP port 5246 so that the remote APs cannot kick off the APs at HQ.
  C. Ensure that the critical APs at HQ have a failover priority of "critical", leave the rest of the HQ APs at "medium", and set the remote site APs to "high".

• Question 125:

  An engineer at a global enterprise organization must ensure that a mesh deployment has the highest number of channels available to the backhaul, regardless of region deployed, which design meets this requirement?

  A. one controller per continent
  B. one controller per country code
  C. redundant controllers in the most restrictive regulatory domain
  D. redundant controllers in the least restrictive regulatory domain
  B. one controller per country code

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  https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-5/config-guide/b_cg85/country_codes.html

• Question 126:

  Refer to the exhibit.

  

  An enterprise is using wireless as the main network connectivity for clients. To ensure service continuity. a pair of controllers will be installed in a datacentre. An engineer is designing SSO on the pair of controllers. What needs to be included in the design to avoid having the secondary controller go into maintenance mode?

  A. The Keep alive timer is too low. which causes synchronization problems.
  B. The connection between the redundancy ports is missing.
  C. The redundancy port must be the same subnet as the redundancy mgmt.
  D. The Global Configuration of SSO is set to Disabled on the controller.
  B. The connection between the redundancy ports is missing.

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  For Stateful Switchover (SSO) to function correctly, the redundancy ports on both the primary and secondary controllers must be directly connected. This allows for the necessary state and configuration information to be synchronized between the two controllers, preventing the secondary controller from entering maintenance mode in the event of a failover.

• Question 127:

  An engineer must repurpose a lab WLC appliance for use in the production environment of the enterprise. After the new WLC is configured with the information of the other WLC, the mobility tunnels are still not coming up. What is the reason?

  A. A firewall is blocking UDP port 16667 between the WLCs.
  B. The WLC management interfaces are in the same VLAN.
  C. The hardware platform is incompatible.
  D. The mobility groups are different.
  C. The hardware platform is incompatible.

  ---

  If a network consists of a mix of controller platforms, you should validate that mobility messaging actually works between them. Mobility messages cannot be exchanged at all between Catalyst 9800 and AireOS platforms unless the AireOS controllers are running release 8.8.111 or later, which introduced the Inter-Release Controller Mobility (IRCM) feature. Henry, Jerome. CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide: Designing and Implementing Cisco Enterprise Wireless Networks (Certification Guide)

• Question 128:

  An engineer must perform a predictive design for a wireless network. The customer has devices that can tolerate at most 100 ms of delay when roaming. Which design criteria must be used?

  A. location
  B. data
  C. video
  D. voice
  D. voice

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  Devices that can tolerate at most 100 ms of delay when roaming are typically voice devices. Voice applications are sensitive to delays, and ensuring a maximum of 100 ms delay is a common design criterion for a wireless network supporting voice services. References: Designing Cisco Enterprise Wireless Networks (ENWLSD 300-42

• Question 129:

  A customer Wi-Fi deployment is experiencing the sticky client problem and must enable the optimized roaming feature. The wireless clients have valid security credentials for an SSID and can see an AP that offers that SSID to join. What must be configured to enhance roaming?

  A. RSSI threshold
  B. disable DFS
  C. disable 802.11k
  D. enable data rates
  A. RSSI threshold

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  To address the sticky client problem, setting an RSSI (Received Signal Strength Indicator) threshold can help. This configuration will prompt clients to roam to a better AP when their signal strength falls below the set threshold, thus enhancing the roaming experience and ensuring clients are connected to the AP with the strongest signal available.

• Question 130:

  An engineer has been tasked with optimizing roaming for all the wireless networks used by shops located in a shopping center. A unique WLAN is assigned to each individual shop named ret470632970B55XX, where the last two digits indicate the shop's location. The wireless network consists of 9800 controllers and Cisco 9100 APs. What should the engineer configure on the controllers to optimize roaming?

  A. assign access rules based on location
  B. disable the 802.11a/b network
  C. enable AES encryption
  D. create an interface per shop
  C. enable AES encryption