Full CWDP-305 Practice Test and 343 unique questions with explanations waiting just for you!
CWDP Wi-Fi Design Dumps CWDP-305 Exam for Full Questions - Exam Study Guide
NEW QUESTION # 83
Your customer requires a security solution where client credentials are used, not a Protected Access Credential (PAC), and the authentication server must have a certificate with optional client certificate use. Which EAP (Extensible Authentication Protocol) method is the best fit for these requirements?
- A. EAP-TTLS
- B. LEAP
- C. EAP-FAST
- D. EAP-TLS
Answer: A
NEW QUESTION # 84
During lunch time in the break room of a company, Wi-Fi connectivity on the 2.4 GHz band is intermittent.
Every other time of the day, it works fine. What's the likely cause of this issue?
- A. Toasters and ovens are heating up the air, raising the noise floor with the Wi-Fi on the 2.4 GHz band
- B. Microwaves in the cafeteria are interfering with the Wi-Fi on the 2.4 GHz band
- C. The AP in the cafeteria keeps rebooting due to lack of PoE budget on the switch
- D. Employees are using their cell data instead of using the Wi-Fi
Answer: B
Explanation:
Comprehensive and Detailed Explanation:
Microwave ovens operate at a frequency of approximately 2.45 GHz, which overlaps with the Wi-Fi 2.4 GHz band. During lunchtime, when microwaves are heavily used, they emit electromagnetic interference that disrupts Wi-Fi signals in the same frequency range, causing packet loss, retries, and intermittent connectivity.
"Microwave ovens can cause significant interference in the 2.4 GHz band, particularly when used in close proximity to client devices and APs."
- CWDP-305 Study Guide, Chapter: Post-Design ValidationandTroubleshooting
NEW QUESTION # 85
When preparing a floor plan graphic for use in predictive and manual site surveying, what calibration method will lead to the most accurate and reliable RF data?
- A. Use the longest available measurement (like a straight exterior wall) to calibrate the graphic's scale.
- B. Measure the width of an actual office doorway with a tape measure and use this value to calibrate against a doorway graphic.
- C. Calibrate the ceiling height of the floor plan first, then the survey software should be able to auto- calibrate the X and Y planes of the graphic.
- D. Use the known size of a small object, such as a ceiling tile, and use a single instance of this object (e.g.
a single ceiling tile) to scale the
floor plan.
Answer: A
NEW QUESTION # 86
Install technicians are deploying a multi-floor WLAN that you have designed. They have finished the first floor and all APs on that floor are powered on and functioning. No APs on any other floors have been deployed at this time. You are considering performing a post-deployment site survey of the first floor immediately to validate proper implementation. What statement is true about this site survey if you perform it?
- A. It will not work because the controllers cannot function properly until all APs licensed to the controller are operational
- B. It will result in a complete set of data informing you how clients will function after the entire WLAN is implemented
- C. It will show you how the first floor will function after all other floors are deployed
- D. It will miss any impact on the WLAN caused by APs on other floors
Answer: D
Explanation:
Conducting a post-deployment survey before all APs are installed-particularly in a multi-floor environment-may yield incomplete results. APs from other floors can influence coverage (due to bleed- through floors), roaming behavior, and channel planning, so the validation should ideally happen after full deployment.
From CWDP-305:
"In multi-floor environments, APs from upper and lower floors contribute to the RF landscape. Validation should wait until all APs are installed to evaluate the WLAN's full performance characteristics."
- Reference: CWDP-305 Official Study and Reference Guide, Chapter on Post-Design ValidationandTroubleshooting
NEW QUESTION # 87
When deploying a new WLAN infrastructure using Power over Ethernet (PoE) to power the access points (APs), you find that a known good AP is not powering up. You connect your laptop using the same cable without any issues. What is the most likely reason the AP did not power up?
- A. Layer 3 routing
- B. Spanning-tree convergence
- C. Lack of PoE budget on the switch
- D. Missing AP licenses on the controller
Answer: C
NEW QUESTION # 88
When creating a long-distance bridge link, it is important to know the channels in use by other networks on both ends of the link and within a reasonable range. It is not as important to know the channels in use in the middle area of the link. Why is this the case?
- A. The signals in the middle of the link will increase the amplitude of your signal as it passes through them
- B. Interference happens at the transmitter
- C. Your RF LoS will always be far above any interference in the middle because the signal travels up and then back down to the remote 802.11 receiver
- D. Interference happens at the receiver
Answer: D
Explanation:
Interference primarily affects the receiver's ability to demodulate signals. In a point-to-point link, RF interference occurring at the middle of the link has little to no impact unless it reaches either endpoint.
Therefore, the focus must be on minimizing interference at the receivers.
From CWDP-305:
"Interference at the receiver is the key concern in bridge links. The energy must be received cleanly to enable demodulation, so interference near the receiving AP is more critical than in the link's midspan."
- Reference: CWDP-305 Official Study and Reference Guide, Chapter on ProtocolandSpectrum Analysis
NEW QUESTION # 89
When designing for a PTP outdoor link, what important consideration should be made about local vegetation?
(Choose all that apply.)
Response:
- A. Reflection factor
- B. Leaves
- C. Water density
- D. Tree height growth
Answer: B,D
NEW QUESTION # 90
For an antenna, 35 dBi of gain is needed. What antenna type should be used to achieve this gain?
- A. Dish
- B. Yagi
- C. 4#dipole
- D. Horn
Answer: A
Explanation:
Antenna gain is a measure of how well an antenna directs or concentrates radio frequency energy in a particular direction. Higher gain antennas focus energy more narrowly, resulting in longer range and better signal strength in the targeted direction.
4# Dipole:Typically offers modest gain and is omnidirectional, making it unsuitable for high-gain requirements.
Yagi:Provides moderate directional gain, generally up to around 20 dBi.
Horn:Offers directional gain, but usually not exceeding 20-25 dBi.
Dish:Parabolic dish antennas are designed for very high gain applications, often exceeding 30 dBi. They are ideal for point-to-point links over long distances.
Therefore, to achieve a gain of 35 dBi, a dish antenna is the appropriate choice.
Reference: CWDP-305 Official Study and Reference Guide, Chapter on Infrastructure Design
NEW QUESTION # 91
In your company's WLAN, you expect to have a mixed client PHY environment and plan to use protection mechanisms. The protection mechanism used by your client devices is configurable.
What is the best protection mechanism for backward compatibility of 802.11n devices with 802.11b devices?
Response:
- A. WMM Protection
- B. RTS/CTS
- C. Dual-CTS
- D. CTS-to-Self
- E. SMPS
Answer: B
Explanation:
RTS/CTS is the best protection mechanism for backward compatibility of 802.11n devices with 802.11b devices because it prevents collisions and interference between different modulation types. 802.11n devices use OFDM, while 802.11b devices use DSSS. These two modulation types are not compatible with each other, but they can coexist in the same environment if they use protection mechanisms to avoid overlapping transmissions. RTS/CTS is a protection mechanism that requires a station to send a Request to Send (RTS) frame before transmitting data, and wait for a Clear to Send (CTS) frame from the receiver or the access point. The RTS and CTS frames are sent at a clause 15 (DSSS) or clause 18 (HR/DSSS) rate, which can be understood by both 802.11n and 802.11b devices. The RTS and CTS frames also contain a duration field that indicates how long the data transmission will last. This way, other stations can defer their transmissions until the channel is clear. RTS/CTS reduces the chances of collisions and hidden node problems, and improves the performance and reliability of the wireless network. References: CWNP, CWDP Certified Wireless Design Professional Official Study Guide, How 802.11n backward compatibility works
NEW QUESTION # 92
You are conducting a physical site survey where heavy machinery is repaired. What is a common item required specifically for this type of survey?
- A. Indoor APs
- B. Personal Protective Equipment (PPE)
- C. Low power APs
- D. Low gain antennas
Answer: B
Explanation:
Conducting a site survey in environments such as heavy machinery repair facilities involves potential hazards, including moving equipment, loud noises, and other safety risks.Therefore, wearing Personal Protective Equipment (PPE) is essential to ensure the safety of the surveyor.
The CWDP-305 Official Study and Reference Guide advises:
"When performing site surveys in industrial or hazardous environments, always adhere to safety protocols, including the use of appropriate Personal Protective Equipment (PPE) such as hard hats, safety glasses, and steel-toed boots." This ensures that the survey is conducted safely and complies with occupational health and safety regulations.
Reference: CWDP-305 Official Study and Reference Guide, Chapter on Advanced Site Surveys
NEW QUESTION # 93
What is the purpose of a Physical Installation Guide document?
- A. To provide sources for purchasing the equipment needed to implement the WLAN
- B. To provide clear instructions on the locations and mounting methods, and possible configuration steps for APs
- C. To prove that the WLAN meets the organization's requirements
- D. To inform the Install technicians of WLAN frame exchanges and communication methods
Answer: B
NEW QUESTION # 94
Given: A project parameter defines a requirement or constraint for a project that can be defined before any file imports or design actions. What is an example of a project parameter commonly available in WLAN design software?
- A. AP locations
- B. Floor plan
- C. Minimum required signal strength
- D. AP type selection
Answer: C
Explanation:
Project parameters in WLAN design software typically include requirements and constraints like:
Minimum required signal strength (e.g., -67 dBm for VoIP)
Minimum required SNR
Desired data rate coverage
These are configured before design work begins and guide how AP placement and coverage will be modeled.
From CWDP-305:
"Project parameters such as minimum signal strength, data rate, and required SNR must be defined before the actual placement of access points. These values define the target RF environment."
- Reference: CWDP-305 Official Study and Reference Guide, Chapter on Wireless Design Process
NEW QUESTION # 95
A table of VLANs in a _________ document should include what device performs ________ services. (Fill in the blanks)
- A. HLD, routing
- B. LLD, bridging
- C. LLD, routing
- D. HLD, QoS
Answer: C
Explanation:
Comprehensive and Detailed Explanation:
An LLD (Low-Level Design) document contains technical specifications and granular configuration details about the WLAN infrastructure. This includes VLAN mappings, IP address schemes, and what network devices (e.g., switches or routers) are responsible for routing between VLANs.
"LLD" is the correct type of document to specify VLAN configuration in detail.
"Routing" is the correct function when VLANs must communicate with each other across subnets, and the document should indicate which devices perform inter-VLAN routing.
"The Low-Level Design includes VLAN assignments, routing roles, IP schemas, and all technical details that installers and engineers need to configure the system."
- CWDP-305 Study Guide, Chapter: Wireless Design Process
NEW QUESTION # 96
A business traveler from North America is in Europe. The hotel only provides coverage in 2.4 GHz. The traveler connects to the hotel's SSID and notices an AP in the hotel room. However, the laptop reports a very low RSSI when connected. The traveler does not have the same problem when connecting in the lobby. What would be the most likely cause of the low RSSI in the hotel room?
- A. The switchport that the AP is connected to is only capable of transmitting at 10 Mbps.
- B. The AP in the room is using ZigBee instead of Wi-Fi.
- C. The AP in the room is transmitting on channel 13 and the traveler associated to a non-channel 13 AP located elsewhere.
- D. The AP in the room is using Bluetooth instead of Wi-Fi.
Answer: C
NEW QUESTION # 97
As you plan a WLAN upgrade, you have assessed the network requirements and data signatures of your applications. One of the popular applications used on your network requires high bandwidth and low to medium Wi-Fi loss, but can tolerate moderate latency and jitter.
What application matches this description?
- A. Email
- B. Video-on-demand
- C. Skype chat
- D. Voice
Answer: A
NEW QUESTION # 98
If a 24-port switch has a PoE budget of 740 W, how many IEEE 802.3at devices can certainly be powered on by it?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
Explanation:
IEEE 802.3at (PoE+) provides up to 30 watts of power per port. To determine how many devices can be supported with a total budget of 740 W:
740 W ÷ 30 W per device = 24.67
However, due to real-world power overheads and cable losses, it's safe to estimate each device may draw up to ~25-30 W. Most vendors recommend a planning budget of around 25-28 W per 802.3at device.
Safe calculation using full 30 W:
740 ÷ 30 = 24.6 # you could theoretically power 24, but for guaranteed power availability considering margin, most designs plan for:
740 ÷ 40 = 18.5 # about 18 devices conservatively
answer: 18 devices can certainly be powered.
- Reference: CWDP-305 Official Study and Reference Guide, Chapter on Infrastructure Design
NEW QUESTION # 99
You conducted a site survey using two USB Wi-Fi adapters with a special driver designed for the site survey software. After deployment, the client devices show lower RSSI values compared to the results from your survey. What is the most likely reason for this discrepancy?
- A. USB Wi-Fi adapters designed for site surveys may have better sensitivity than regular Wi-Fi cards installed in client devices
- B. The transmit power on the APs is higher than needed
- C. Regular Wi-Fi cards installed in client devices do not support the same protocols as survey adapters
- D. All USB Wi-Fi adapters have a greater sensitivity than internal Wi-Fi adapters
Answer: A
Explanation:
Site survey adapters are often specialized devices with enhanced sensitivity and are calibrated for accurate measurements. In contrast, standard client devices may have varying hardware and driver configurations, leading to differences in RSSI readings. Therefore, it's common to observe discrepancies between survey results and actual client experiences. This emphasizes the importance of considering client device capabilities during WLAN design and validation.
Reference: CWDP-305 Official Study and Reference Guide, Chapter on Advanced Site Surveys
NEW QUESTION # 100
You have determined the best mounting locations for APs in a given installation. The facilities manager has asked you to change the locations for several APs due to aesthetic concerns. You suggest mounting the APs in the ideal locations and painting them so they go unnoticed in the environment.
What is a valid recommendation or consideration when painting APs?
- A. Always use paints with metallic dye in them to prevent potential RF propagation impact.
- B. Most AP models for indoor environments come in a variety of form factors and colors. Painting is never recommended.
- C. Painting APs may void the product manufacturer's warranty.
- D. Painting APs will significantly reduce the output power.
Answer: C
NEW QUESTION # 101
After designing and deploying a WLAN infrastructure, you realized the CCI is causing poor performance in the 2.4 GHz band. Primarily, you've designed the WLAN for 5 GHz and 2.4 GHz as a best effort. You found out that the implementers didn't follow your guidelines when configuring the WLAN infrastructure. What can you do to minimize as much as possible the CCI impact in the 2.4 GHz band?
- A. Increase the transmit power on all APs
- B. Add more APs to the infrastructure
- C. Use all channels available in the 2.4 GHz band
- D. Turn-off 2.4 GHz radios on some APs
Answer: D
NEW QUESTION # 102
What should always be done before connecting an AP to the production network?
- A. Reduction of output power.
- B. Disabling SSID broadcasting.
- C. Baseline configuration that prevents the introduction of security issues to the network on initial connection.
- D. Increase in output power.
Answer: C
Explanation:
Before integrating an access point (AP) into a production environment, it's imperative to apply a baseline configuration. This configuration ensures that the AP adheres to the organization's security policies and network standards, mitigating potential vulnerabilities upon deployment. Implementing a baseline configuration aids in maintaining network integrity and simplifies future troubleshooting.
Reference: CWDP-305 Official Study and Reference Guide, Chapter on Post-Design ValidationandTroubleshooting
NEW QUESTION # 103
What might limit the ability to locate 802.11 clients using a WLAN infrastructure without an 802.11 tag?
- A. When it is off
- B. When its radio is disabled
- C. Lack of 802.11k support
- D. When its radio is disabled
Answer: A
NEW QUESTION # 104
What frequency and power did 802.11y provide?
- A. 5.25-5.35 GHz, 10W EIRP
- B. 3.7-3.75 GHz, 15W EIRP
- C. 3.65-3.7 GHz, 20W EIRP
- D. 5.65-5.7 GHz, 5W EIRP
Answer: C
Explanation:
The IEEE 802.11y amendment introduced support for operation in the 3.65-3.7 GHz frequency band, allowing for higher power transmissions up to 20 watts Equivalent Isotropically Radiated Power (EIRP).This enhancement was designed to improve wireless coverage and performance, especially in environments requiring extended range and penetration.
The increased power and frequency range provided by 802.11y facilitate better service in areas where traditional Wi-Fi bands may be congested or less effective.
Reference: CWDP-305 Official Study and Reference Guide, Chapter on ProtocolandSpectrum Analysis
NEW QUESTION # 105
Your new customer is concerned about maintaining privacy for their proprietary information when you conduct information gathering for their WLAN design. Which document can you use to directly address their concern?
- A. Hold Harmless
- B. BoM
- C. SoW
- D. NDA
Answer: D
NEW QUESTION # 106
While using a USB adapter attached to a USB hub and your laptop for protocol analysis, you notice that the SNR is lower than expected. The USB adapter is an 802.11ac 3x3:3 adapter and is connected to a USB 3 hub.
What is likely causing the SNR variation?
- A. USB 2.0 interference
- B. EMI from the battery in the device
- C. USB 3.0 interference
- D. RF incidental energy generated by the cooling fans in the laptop
Answer: C
Explanation:
USB 3.0 interfaces are known to generate RF interference in the 2.4 GHz band due to the high-frequency noise emitted by the differential signaling in USB 3.0 cables and ports. This interference can reduce SNR, especially for devices located close to the USB port.
From CWDP-305:
"USB 3.0 cables and ports can emit broadband noise in the 2.4 GHz band, negatively impacting receive sensitivity and SNR. This can distort measurements during protocol analysis or performance testing."
- Reference: CWDP-305 Official Study and Reference Guide, Chapter on ProtocolandSpectrum Analysis
NEW QUESTION # 107
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