Exam 300-425 Papers, 300-425 Prep Guide

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Cisco 300-425 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Wired and Wireless Infrastructure Design30%- Physical infrastructure
  • 1. Controller placement, port planning, redundancy
  • 2. AP power, cabling, switch capacity, mounting, grounding
- Radio frequency design
  • 1. Channel planning, power management, antenna selection
  • 2. High-density, bridging/mesh design
- Logical infrastructure
  • 1. Architecture choice: centralized, distributed, cloud-managed
  • 2. Licensing, VLAN, QoS, security design
Topic 2: Wireless Site Survey25%- Requirements collection and constraint evaluation
  • 1. Physical environment and interference analysis
  • 2. Client density, application types, AP selection
- Survey types and execution
  • 1. Predictive, pre-deployment, post-deployment, Layer 1 surveys
  • 2. Tools: Ekahau, AirMagnet, Planner, spectrum analysis
Topic 3: Mobility Design25%- Location services
  • 1. Integration with analytics
  • 2. Designing for location accuracy
- Mobility tunneling
  • 1. Optimization for voice/video
  • 2. Data and control path validation
- Roaming and mobility groups
  • 1. Mobility group roles and configuration
  • 2. Intra-controller, inter-controller, inter-domain roaming
Topic 4: WLAN High Availability20%- AP and service redundancy
  • 1. AP failover, RRM, load balancing
  • 2. SSID and service continuity
- Controller high availability
  • 1. Stateful switchover, SSO, N+1, LAG
  • 2. Georedundancy and disaster recovery

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300-425 Prep Guide & 300-425 Test Guide

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Cisco Designing Cisco Enterprise Wireless Networks Sample Questions (Q282-Q287):

NEW QUESTION # 282
What is the attenuation value of a human body on a wireless signal?

Answer: C

Explanation:
Signal Attenuation
Signal attenuation or signal loss occurs even as the signal passes through air. The loss of signal strength is more pronounced as the signal passes through different objects. A transmit power of 20 mW is equivalent to 13 dBm. Therefore, if the transmitted power at the entry point of a plasterboard wall is at 13 dBm, the signal strength is reduced to 10 dBm when exiting that wall. This table shows the likely loss in signal strength caused by various types of objects.
Signal Attenuation Caused By Various Types of Objects
Object in Signal Path
Signal Attenuation through Object
Plasterboard wall
3 dB
Glass wall with metal frame
6 dB
Cinder block wall
4 dB
Office window
3 dB
Metal door
6 dB
Metal door in brick wall
12 dB
Human body
3 dB
Each site surveyed has different levels of multipath distortion, signal loses, and signal noise. Hospitals are typically the most challenging environment to survey due to high multipath distortion, signal losses and signal noise. Hospitals take longer to survey, require a denser population of access points, and require higher performance standards. Manufacturing and shop floors are the next hardest to survey. These sites generally have metal siding and many metal objects on the floor, which result in reflected signals that recreate multipath distortion. Office buildings and hospitality sites generally have high signal attenuation but a lesser degree of multipath distortion.
https://www.cisco.com/c/en/us/support/docs/wireless-mobility/wireless-lan-wlan/71642-vocera-deploy-guide.html


NEW QUESTION # 283
A wireless engineer must design mobility between two buildings at a campus site. The engineer has one controller at each site. The engineer is investigating inter-controller CAPWAP data and control traffic. Which two ports must be open? (Choose two.)

Answer: D,E

Explanation:
For mobility between two buildings with one controller at each site, CAPWAP data and control traffic must be able to pass between controllers. CAPWAP control messages use UDP port 5246 while CAPWAP data messages use UDP port 5247; therefore, these ports must be open to allow inter-controller communication for seamless mobility. Reference := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide Premium Edition and Practice)


NEW QUESTION # 284
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.)

Answer: A,E

Explanation:
TPC - Transmit Power Control, sets to power to determine the cells boundary RXSOP - The higher the RX-SOP level, the less sensitive the radio is and the smaller the receiver cell size will be TSPEC - Traffic Specification, this is a QoS feature to prioritise traffic LSS - Location Specific Service, has to do with mDNS and Bonjour DFS - Dynamic Frequency Selection, is used to back off of radar bands in case radar signals are detected


NEW QUESTION # 285
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?

Answer: C

Explanation:
Section: Wired and Wireless Infrastructure


NEW QUESTION # 286
The wireless team must configure a new voice SSID for optimized roaming across multiple WLCs with Cisco
8821 phones. Which two settings accomplish this goal? (Choose two.)

Answer: C,D

Explanation:
For optimized roaming across multiple Wireless LAN Controllers (WLCs) with Cisco 8821 phones, configuring mobility groups between WLCs allows for seamless roaming and sharing of security contexts. Additionally, using Cisco Centralized Key Management (CCKM) for authentication reduces the time required for re-authentication during roaming, providing a more efficient transition between access points3


NEW QUESTION # 287
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