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300-425 Questions and Answers

Question # 6

An engineer is setting up the WLC to support a high-density design for a lecture hall. The engineer must modify the existing high-density RF protocol to obtain a smaller cell size. Also, the clients must connect to the nearest AP using the highest possible data rates. Which setting allows this design?

A.

AP load balance

B.

client distribution

C.

power threshold

D.

RX-SOP threshold

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Question # 7

An engineer is implementing a wireless design for a service provider. The design includes a Catalyst 9800, a stack of two Catalyst 9300X-

48HX switches, and 9166 APs. Each AP must be named using the Floor-439412509-01X sting where X is the area number. The engineer wants

to connect the APs to the switch stack using POE. How many APs must the engineer connect to the stack so the APs run using full functionalities?

A.

all ports on switch 2 of the stack

B.

all ports on switch 1 of the stack

C.

all ports of the switches

D.

half ports per switch

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Question # 8

A technician connects a Cisco Aironet 3700 Series access point to a switch and realizes that the AP is coming up with 3x3 MIMO. Which reason explains this behavior?

A.

A redundant power supply is unavailable on the switch.

B.

The switch is 802.3af capable.

C.

The AP is getting power from a power injector.

D.

The switch is PoE+ capable.

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Question # 9

A customer uses a Cisco 5520 WLC that is connected via a single 10-GB interface to manage the wireless network. The wireless network

includes 500 APs for the campus network. The customer wants to add 300 APs and is concerned about traffic load and lack of redundancy. The purchase of a second controller is not an option. Which design approach mitigates the customer concerns?

A.

Connect a second 10-GB interface on the WLC and set the port as a secondary port.

B.

Connect a second 10-GB interface on the WLC and implement LAG.

C.

Implement a vWLC and configure SSO with the WLC.

D.

Implement a vWLC and configure N+1 redundancy with the WLC.

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Question # 10

An engineer working for an enterprise deployed multiple Cisco WLCs. A controller that sits in the R&D division is connected through a firewall and is part of the same mobility group. The engineer must ensure that the mobility tunneling is available through the firewall and test it as R&D engineers roam the production ..within their department. How is this requirement met?

A.

mapping on UDP port 16666 and mapping on Protocol 96 between management ports

B.

mapping on UDP port 16666 and mapping on Protocol 97 between management ports

C.

mapping on UDP port 16667 and mapping on Protocol 97 between management ports

D.

mapping on UDP port 16667 and mapping on Protocol 96 between management ports

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Question # 11

An engineer is designing a wireless deployment for a university auditorium. Which two features can be used to help deal with the issues introduced by high AP count? (Choose two.)

A.

TSPEC

B.

RXSOP

C.

TPC

D.

LSS

E.

DFS

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Question # 12

A customer is concerned about mesh backhaul link security. Which level of encryption does the backhaul link use?

A.

hash

B.

AES

C.

WEP

D.

3DES

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Question # 13

A company wants to replace its existing PBX system with a new VoIP System that will include wireless IP phones. The CIO has concerns about whether the company’s existing wireless network can support the new system. Which tool in Cisco Prime can help ensure that the current network will support the new phone system?

A.

Location Readiness

B.

Site Calibration

C.

Map Editor

D.

Voice Readiness

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Question # 14

A network consultant is designing a wireless network for a government agency. The customer requires high security between any device

communication. The design includes AireOS, Cisco IOS-XE controllers, and Cisco 4800 Series APs. Which requirement must be met to enhance the mobility group security?

A.

Use a different group name for each mobility member.

B.

Enable MIC authentication between the mobility group members.

C.

Enable Mobility Encryption on the network.

D.

Use a complex group name for the mobility group.

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Question # 15

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

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Question # 16

A customer has this wireless design:

• two Cisco Catalyst 9800 Series wireless controllers that are configured in a high-availability SSO cluster to manage the APs in a local office network

• 100 APs in local mode that are registered to the high-availability cluster

• one Catalyst 9800 Series wireless controller that is deployed as an anchor in a DMZ

• a CAPWAP tunnel in UP state between the high-availability cluster and the anchor WLC

The customer wants the anchored traffic to remain up if a single WLC in the high-availability cluster fails. How must this requirement be incorporated into the design?

A.

Configure the APs with the high-availability cluster as the primary base.

B.

Deploy EMC APs as anchors and configure a high-availability cluster.

C.

Create a separate EoIP tunnel for each WLC in the high-availability cluster.

D.

Configure the mobility MAC address for the high-availability cluster.

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Question # 17

A university lecture hall has a Cisco wireless high-density network with this configuration:

• 5 GHz only

• 20-MHz channels

• UNII-1, UNII-2, and UNII2-E channels

• TPC minimum = 8

• TPC maximum = 14

The lecture hall is 200 feet by 100 feet and has 16 Cisco APs that use directional antennas. Which feature must be included in the design to mitigate and reduce high-channel utilization from rogue APs?

A.

band select

B.

DFS detection

C.

RxSOP

D.

802.11w

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Question # 18

An engineer must create a multicampus architecture wireless design to accommodate 4500 access points for wireless data Which model controller the requirements to support all access points on one high availability controller setup?

A.

3504

B.

5508

C.

5520

D.

8540

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Question # 19

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.

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Question # 20

An engineer added an AP to a deployment after a post-installation site survey. The engineer then notices an increase in co-channel interference and retransmissions. Which two features help mitigate the issue? (Choose two.)

A.

Cisco Compatible Extensions

B.

Transmit Power Control

C.

Enhanced Distributed Channel Access

D.

Coverage Hole Detection

E.

Dynamic Channel Assignment

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Question # 21

An engineer Is trying to determine the most cost-effective way to deploy high availability for a campus enterprise wireless network that currently leverages three wireless LAN controllers. Which architecture should the engineer deploy?

A.

N+1 solution without SS0

B.

N+1 with SSO

C.

N+N solution without SSO

D.

N+N with SSO

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Question # 22

What is the attenuation value of a human body on a wireless signal?

A.

3 dB

B.

4 dB

C.

6 dB

D.

12 dB

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Question # 23

Which two considerations must a network engineer have when planning for voice over wireless roaming? (Choose two.)

A.

Full reauthentication introduces gaps in a voice conversation.

B.

Roaming time increases when using 802.1x + Cisco Centralized Key Management.

C.

Roaming occurs when the phone has seen at least four APs.

D.

Roaming occurs when the phone has reached -80 dBs or below.

E.

Roaming with only 802.1x authentication requires full reauthentication.

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Question # 24

An engineer must ensure that the wireless network can accomplish fast secure roaming by way of caching keys on the access points. Which key caching mechanism is enabled by default on a Cisco AireOS WLC?

A.

SKC

B.

OKC

C.

802.11r

D.

CCKM

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Question # 25

A wireless deployment in a high-density environment is being used by vendors to process credit card payment transactions via handheld mobile scanners. The scanners are having problems roaming between access points in the environment. Which feature on the wireless controller should have been incorporated in the design?

A.

RX SOP

B.

802.11w

C.

AP Heartbeat Timeout

D.

Application Visibility Control

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Question # 26

An engineer is configuring a centralized set of controllers for separate facilities. Which two Cisco wireless architectures must be used to ensure flexible sizing of WLAN to VLAN mappings? (Choose two.)

A.

interface group

B.

mobility group

C.

AP group

D.

controller group

E.

RF group

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Question # 27

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.

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Question # 28

Refer to the exhibit.

A customer is deploying a Greenfield 802.11n network with data, voice, and location awareness using APs with the WSSI modules. Which two settings in the Cisco Prime Infrastructure Planning Tool, when selected, provide a more accurate prediction of the number of APs the customer must purchase for the new facility? (Choose two.)

A.

Override Coverage per AP

B.

Voice

C.

Data/Coverage

D.

Location with Monitor Mode APs

E.

Location

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Question # 29

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 dynamics 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.

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Question # 30

An engineer must ensure that the new wireless LAN deployment can support seamless roaming between access points using a standard based on an amendment to the 802.11 protocol. Which protocol must the engineer selects?

A.

802.11i

B.

802.11ac

C.

802.11r

D.

802.11e

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Question # 31

A network engineer is troubleshooting connectivity issues between two WLCs running 8.x code in SSO mode and finds that the redundancy management heartbeat is failing. Which packet type must be filtered for heartbeats when taking a capture to verify communication?

A.

RSTP

B.

UDP

C.

TCP

D.

ICMP

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Question # 32

An enterprise is using a Cisco AireOS controller and Wi-Fi 6 APs. The controller is installed in the head office, and the employees primarily use Apple OS devices. The APs broadcast WLAN ENT-WLAN406558520-1 for the employees and a guest WLAN with similar naming. What needs to be enabled on the controller to optimize roaming?

A.

Aggregated Probe Response Optimization

B.

Fast SSID Changing

C.

Load Balancing Window

D.

Client Timers

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Question # 33

An engineer is conducting a Layer 2 site survey. Which type of client must the engineer match to the survey?

A.

best client available

B.

phone client

C.

normal client

D.

worst client available

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Question # 34

An engineer is designing a high-density WLAN for a 10,000-seat auditorium. The solution must take advantage of human attenuation, as well as the aesthetics of the room. Where must the APs be placed?

A.

on the walls

B.

under the seats

C.

on the ceiling

D.

above the seating areas

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Question # 35

As part of a wireless site survey in a hospital, an engineer needs to identify potential Layer 1 interferers. In which two areas is the engineer most likely to find sources of 2.4 GHz and 5 GHz RF noise? (Choose two.)

A.

magnetic resonance imaging

B.

kitchen

C.

Gamma Knife radiation treatment

D.

X-ray radiography

E.

patient room

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Question # 36

What is the recommended cell overlap when designing a wireless network for Cisco Hyperlocation?

A.

20%

B.

30%

C.

40%

D.

50%

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Question # 37

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

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Question # 38

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.

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Question # 39

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

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Question # 40

A medium-sized hospitality company with 50 hotels needs to upgrade the existing WLAN in each hotel to 802.11n. During the site surveys for each hotel, what needs to be taken into consideration when determining the locations for each AP?

A.

Selecting locations that are easily accessed so maintenance and upgrades can be performed quickly.

B.

Selecting AP locations where power is already available.

C.

Selecting APs that can be hidden in ceiling panels to provide a secure and clean aesthetic look.

D.

Selecting locations that make visual assessment of the AP operation easy.

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Question # 41

An engineer must perform a predictive design for a wireless network for location readiness and to mitigate interference. Which power level does the engineer use?

A.

10 mw

B.

18 mw

C.

20 mw

D.

50 mw

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Question # 42

How does AP failover priority for access points function when configured with priority 1 or 4?

A.

When configured with priority 1, the access point is assigned with the highest priority level and it is marked as critical. This access point fails over before other access points with the lower priority when there is primary controller failure.

B.

When configured with priority 4, the access point is assigned with the highest priority level and it is marked as critical. This access point fails over before other access points with the lower priority when there is primary controller failure.

C.

When configured with priority 4, the access point is assigned with the lowest priority level and it is marked as low. This access point fails over after other access points with the higher priority when there is primary controller failure.

D.

When configured with priority 1, the access point is assigned with the medium priority level and it is marked as medium. This access point fails over after other access points with the higher priority when there is primary controller failure.

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Question # 43

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?

A.

Band Select

B.

RRM

C.

Cisco Centralized Key Management

D.

load balancing

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Question # 44

An engineer must perform an assessment of a customer LAN for a future IEEE 802.11ac Wave 2 wireless deployment All access switches are Fast Ethernet-Capable only, and the wired infrastructure between existing APs and access switches is based on the CAT 6A standard. Which two actions provide maximum support of Cisco 3800 Series access points? (Choose two.)

A.

Replace the existing switches with mGig switches.

B.

Replace the existing switches with gigabit switches with 10G uplinks.

C.

Ensure that cable distances between access switches and APs are not longer than 100 meters.

D.

Replace the existing wiring infrastructure with the CAT-7E wiring standard,

E.

Ensure that cable distances between access switches and APs are not longer than 55 meters.

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Question # 45

A customer with two Cisco 5520 WLCs that work as a primary and secondary had some switching issues and the primary controller lost

connectivity. Immediately all APs went to discovery and joined the secondary controller. After recovering from the issue, the primary controller is online, but no APs return to it. All APs remain in the secondary controller. Which setting advises the APs to return to their primary

controller?

A.

AP fallback

B.

AP multicast mode

C.

AP heartbeat timeout

D.

broadcast forwarding

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Question # 46

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

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Question # 47

An engineer must optimize client roaming after noticing that clients in the environment are not roaming as expected. Upon reviewing an over- the-air packet capture, the engineer sees that the AP is sending a BSS Transition Management query to the client, which causes it to roam.

The disassociation imminent feature is not enabled on the WLAN. What is the cause of the issue?

A.

Low RSSI check is enabled.

B.

Fast Transition is disabled.

C.

Band Select is enabled.

D.

Optimized roaming is enabled.

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Question # 48

An AP is receiving 802.11 packets on its 802.11a radio with an RSSI value of -77 dBm. The current AP is part of an AP group that has been assigned an RF profile with RX-SOP set to Medium for 802.11a. Which action does the AP take with the packets?

A.

All frames are classified as non-Wi-Fi frames and are not decoded by the 5 GHz radio.

B.

Frames are decoded by the 2.4 GHz radio.

C.

All frames are classified as non-Wi-Fi frames and are not decoded by the 2.4 GHz radio.

D.

Frames are decoded by the 5 GHz radio.

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Question # 49

An engineer must deploy a wireless network in an open-plan environment that has three SSIDs using the 5 GHz band set to 40 MHz. Co-channel interference must be reduced. Which two actions must be taken? (Choose two.)

A.

Increase the number of SSIDs.

B.

Increase channel bonding in the 2.4 GHz band to 40 MHz.

C.

Disable band steering.

D.

Decrease channel bonding in the 5 GHz band to 20 MHz.

E.

Reduce the power of the AP.

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Question # 50

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

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Question # 51

A customer has a centralized wireless deployment with N+1 high availability and few open authentication SSIDs configured. After fail over, all APs are broadcasting all SSIDs, but the clients are assigned IP addresses from a different subnet. The WLANs on both WLCs are configured with the same dynamic interfaces. Which feature must be incorporated in the wireless design of the second controller?

A.

RF Protocol

B.

AP Groups

C.

VLAN Select

D.

AAA Override

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Question # 52

A wireless engineer must optimize RF performance for multiple buildings with multiple types of construction and user density. Which two actions must be taken? (Choose two.)

A.

Configure Flexconnect groups for each building.

B.

Configure WMM profiles for each building.

C.

Configure AP groups for each area type.

D.

Configure RF profiles for each area type.

E.

Enable DTPC on the network.

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Question # 53

During a client roaming event, which device is responsible for communicating the new Layer 2 EID mapping of a wireless supplicant to the fabric domain?

A.

WLC

B.

BN

C.

CP2

D.

CP1

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Question # 54

An architect configures a set of AirOS controllers to be in the same mobility group as the existing controllers. The implementation should facilitate inter-controller roaming for users in their new campus. After the configuration, the mobility tunnel is not operational for the data path in the network. Which two validations should be performed? (Choose two.)

A.

firewall port 16666

B.

mapping

C.

mepping

D.

rping

E.

firewall IP protocol 97

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Question # 55

A wireless network consists of:

• two IOS XE controllers installed in a data center

• 9100 series APs

• 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.

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Question # 56

During a meeting to gather the requirements for a new Wi-Fi network design, the customer requests that to connect. Which affect does this have to the wireless network?

A.

bigger channel width

B.

lower throughput

C.

2.4 GHz signal congestion

D.

higher RF re ection

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Question # 57

An engineer must assess an existing company WLAN to determine the possibility for future IEEE 802.11ac Wave 2 wireless deployment. The existing WLAN is IEEE 802.11a/n and has IEEE 802.11n and 802. 11a clients. The engineer must advise the customer about support for these older clients on the new APs. What happens with client compatibility?

A.

802.11ac is backward compatible with 802.11n but not with 802.11a.

B.

802.11ac is backward compatible with 802.11a but not with 802.11n.

C.

802.11ac is backward compatible with 802.11a and 802.11n.

D.

802.11ac is not backward compatible with 802.11a or 802.11n.

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Question # 58

An engineer is using a Cisco AIR-2702i AP to conduct a Layer 1 site Survey, which mode is selected for the AP to discover non-Wi-Fi interference with metageek chanalyzer?

A.

FlexConnect

B.

Sniffer

C.

Monitor

D.

SE-connect

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