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300-425
Designing Cisco Enterprise Wireless Networks (ENWLSD) Questions and Answers

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Viewing questions 11-20 out of questions

Questions # 11:

A high-density wireless network is designed. Which Cisco WLC configuration setting must be incorporated in the design to encourage clients to use the 5 GHz spectrum?

Options:

Band Select

RRM

Cisco Centralized Key Management

load balancing

Answer

Explanation

: Band Select is a feature on Cisco Wireless LAN Controllers (WLC) that encourages dual-band wireless clients to connect to the less congested 5 GHz band. This helps to balance the client load between 2.4 GHz and 5 GHz and improve overall network performance in high-density environments.

[: Look for information on ‘Band Select’ in the official Cisco ENWLSD 300-425 certification guide., ]

Questions # 12:

Where must the APs be mounted when used in a high-density wireless network to provide 6 dB to 20 dB of attenuation to a cell?

Options:

in the aisle

under the seat

above the stage

under the stage

Answer

Explanation

In high-density environments, such as stadiums or auditoriums, APs are often mounted under the seats to provide a controlled cell size with attenuation. This placement helps to manage the RF environment by providing attenuation of 6 dB to 20 dB, which can reduce co-channel interference and improve the user experience by ensuring a strong signal and minimizing noise from other cells.

Questions # 13:

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)

Options:

Site access

AP model

WLC model

HAVC access

Number of clients

Answer

B, E

Explanation

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

Questions # 14:

A retail chain wants centralized WLAN control with remote APs. Which Cisco deployment

model is most suitable?

Options:

FlexConnect

Cloud-only deployment

Autonomous AP deployment

Mesh-only architecture

Answer

Questions # 15:

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

Options:

It is higher than dry goods.

It is not impactful to the RF design.

It is less than dry goods.

It is impactful but overall negligible to the RF design.

Answer

Explanation

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.

Questions # 16:

An engineer is designing a wireless network to support high availability. The network will need to support the total number of APs and client SSO. Live services should continue to work without interruption during the failover Which two requirements need to be incorporated into the design to meet these needs? (Choose two.)

Options:

redundant WLC

controller high availability pair with one of the WLCs having a valid AP count license

10 sec RTT

back-to-back direct connection between WLCs

WLC 7.5 code or more recent

Answer

A, B

Explanation

To support high availability, the design must include redundant Wireless LAN Controllers (WLCs) to ensure service continuity in case of a failure. Additionally, having a high availability pair with one WLC holding a valid AP count license ensures that all APs can remain connected and services continue without interruption during failover.

https://www.cisco.com/c/en/us/td/docs/wireless/controller/technotes/7-5/High_Availability_DG.html#pgfId-44074

Questions # 17:

Drag and drop the characteristics from the left onto the correct functionalities on the right.

Question # 17

Options:

Answer

Answer:

Explanation

https://www.cisco.com/c/en/us/td/docs/wireless/controller/7-4/configuration/guides/consolidated/b_cg74_CONSOLIDATED/b_cg74_CONSOLIDATED_chapter_010100001.html

Questions # 18:

An engineer is designing a new wireless network. The network needs to meet these requirements:

Question # 18

Which design approach should be taken?

Options:

5 GHz frequency band with channel bonding, to support 40 MHz channels

5 GHz frequency band without channel bonding, to support 20 MHz channels

5 GHz frequency band with channel bonding, to support 80 MHz channels.

2.4 GHz frequency band without channel bonding, to support 20 MHz channels

Answer

Explanation

The design approach should use the 5 GHz frequency band without channel bonding to support 20 MHz channels. This provides a balance between network capacity and interference mitigation.

https://www.cisco.com/c/en/us/support/docs/wireless/4400-series-wireless-lan-controllers/108184-config-802-11n-wlc.html

Questions # 19:

WLC SSO is set up between two WLCs in a service provider network serving public spaces. On WLC failover, it is noticed that only about half of the original client count is now showing on the secondary WLC, although it is currently showing the role as active. Which design side case explains the issue?

Options:

The secondary WLC platform does not support the required client count.

The WLCs had not completed database sync before the primary failure.

SSO is not configured correctly.

Some client sessions were in WebAuth-Req state before failover.

Answer

Explanation

When a Wireless LAN Controller (WLC) SSO is set up between two WLCs in a service provider network, and there is a failover, the secondary WLC should ideally support the same client count as the primary. If only about half of the original client count is showing on the secondary WLC post-failover, it suggests that the WLCs had not completed the database synchronization before the primary WLC failed. This incomplete sync would result in a loss of client information, leading to a reduced client count on the secondary WLC.

Questions # 20:

An engineer is performing a predictive wireless design for a medical treatment environment, which requires data and voice services. What is the minimum requirement for the design?

Options:

overlapping -72 dBm coverage from two access points

continuous -67 dBm coverage from one access point

continuous -72 dBm coverage from one access point

overlapping -67 dBm coverage from two access points

Answer

Explanation

In a medical treatment environment where both data and voice services are required, continuous coverage of -67 dBm from one access point is the minimum requirement. This ensures that there is sufficient signal strength for reliable voice communication, which is critical in medical settings. The -67 dBm threshold is commonly recommended for voice applications to ensure call quality and reliability.