CWDP-305試験問題集合格させるのは2026年最新の認証済み試験問題
CWDP-305試験問題でリアルに更新された問題PDF
CWNP CWDP-305 認定試験の出題範囲：
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質問 # 110
You have performed a validation site survey after deploying a WLAN infrastructure in an All-Wireless- Office. One specific application is experiencing delays after transitioning from wired to wireless connectivity.
During validation, you discover that all APs are using 80 MHz channel widths instead of the designed 20 MHz on the 5 GHz band. What can be done to resolve the delay for this application?
- A. APs should be using 160 MHz channel-widths to get more throughput
- B. Reconfigure to use 20 MHz channel-widths, so reuse of the frequency is more effective
- C. Power-off half of the APs to reduce CCI and keep 80 MHz channel-widths
- D. Add more APs using 80 MHz channel-widths
正解：B
質問 # 111
What basic RF math formula should be used as a baseline to convert an RF value in units of dBm into a value of mW?
*Note: "dBm" in the formulas represents the known dBm value
- A. 0 dBm = 1 mW
- B. mW C.
- C. mW mW
正解：A
質問 # 112
Main Topic:Post-Design ValidationandTroubleshooting
Question:
Excessive uplink RTP frame retransmissions can result in ____________.
- A. MOS scores in excess of 5
- B. Deauthentication of the transmitter by the receiver
- C. Lowering of the data transmission rate by the transmitting station
- D. Head-of-Line blocking at the receiver
正解：C
解説：
Comprehensive and Detailed Explanation:
In WLANs, excessive retransmissions of Real-time Transport Protocol (RTP) frames, often due to interference or poor signal quality, can trigger the rate adaptation algorithm in client devices. This algorithm reduces the data transmission rate to maintain connectivity, which can lead to increased latency and degraded voice quality.
Reference:CWDP-305 Study Guide, Chapter on Post-Design ValidationandTroubleshooting - Voice over WLAN Troubleshooting.
質問 # 113
After designing a WLAN infrastructure using predictive design software, what is the best way to validate the predictive design in the physical space before deployment, assuming time and budget allow for it?
- A. Deploy all of the APs as they're shown in the predictive design and perform an active site survey
- B. Perform an AP-on-a-Stick survey using AP locations based upon the predictive design to confirm each AP's placement
- C. Deploy all of the APs as they're shown in the predictive design and perform a passive site survey
- D. Use a client device positioned where the APs will be installed and measure the signal from the client device
正解：B
解説：
An AP-on-a-Stick (APoS) survey is a method used to validate predictive WLAN designs by temporarily placing an access point at the planned installation location and measuring its performance in the actual environment. This approach helps in confirming the accuracy of the predictive model and ensures that the AP placement will meet the desired coverage and performance requirements.
Reference: CWDP-305 Official Study and Reference Guide, Chapter on Post-Design ValidationandTroubleshooting
質問 # 114
What term refers to the security practice of obfuscating actual data from unintended receivers as the data crosses the transmission medium?
- A. Accounting
- B. Integrity
- C. Authentication
- D. Nonrepudiation
- E. Confidentiality
正解：E
解説：
Confidentiality is a core principle of information security that involves keeping data hidden or inaccessible from unauthorized users. In the context of WLANs, confidentiality is maintained through encryption protocols such as WPA2/WPA3, which ensure that even if a data transmission is intercepted, its contents remain unreadable to unintended receivers.
From the CWDP-305 Study Guide, confidentiality is defined as:
"The protection of transmitted data from unauthorized disclosure. This is typically accomplished through encryption methods that obscure the original content, ensuring that intercepted packets cannot be deciphered by unintended recipients." Other security terms like authentication (verifying identity), integrity (ensuring data is not altered), and nonrepudiation (assurance of origin) are also important but pertain to different aspects of data protection.
- Reference: CWDP-305 Official Study and Reference Guide, Chapter on Wireless Design Process
質問 # 115
When live video streaming solutions that transmit simultaneously to more than one recipient are used, what special capability should be considered and configured in all affected WLAN implementations?
Response:
- A. Secure TCP
- B. Multicasting
- C. IPSec
- D. IPv6
正解：B
質問 # 116
Main Topic:Infrastructure Design
Question:
What is the minimum PoE budget needed on a switch to support 6 (six) APs that can only be powered using IEEE 802.3at if no other details are provided?
- A. 180 W
- B. 320 W
- C. 60 W
- D. 240 W
正解：A
解説：
Comprehensive and Detailed Explanation:
IEEE 802.3at, also known as PoE+, provides up to 30 watts of power per port. To calculate the minimum Power over Ethernet (PoE) budget required for 6 access points (APs):
30 W/AP × 6 APs = 180 W
Therefore, a switch must have a minimum PoE budget of180 wattsto support six 802.3at-powered APs.
Reference:CWDP-305 Study Guide, Chapter on Infrastructure Design - Power over Ethernet Considerations.
質問 # 117
Given: The 802.11ac APs you have selected for your public access deployment support many of the PHY and MAC enhancements offered by the 802.11n and 802.11ac amendments. The AP is configured for a single- band (2.4 GHz) and only allows 20 MHz channels. The WLAN radio in the AP is a 3x3 802.11n chip that supports two spatial streams. What is the maximum MCS rate that could be supported by this AP?
- A. 65 Mbps
- B. 108 Mbps
- C. 144 Mbps
- D. 54 Mbps
正解：C
解説：
Comprehensive and Detailed Explanation:
In a 3x3 802.11n configuration supporting two spatial streams over a 20 MHz channel with a short guard interval (400ns), the maximum data rate achievable is 144 Mbps. This is derived from the MCS (Modulation and Coding Scheme) index tables defined in the 802.11n standard, where MCS 15 corresponds to two spatial streams at 64-QAM modulation with a 5/6 coding rate. Therefore, the correct maximum MCS rate for this configuration is 144 Mbps.
Reference: CWDP-305 Official Study Guide, Chapter on Infrastructure Design
質問 # 118
A table of VLANs in a _________ document should include what device performs ________ services.(Fill in the blanks) Response:
- A. LLD, routing
- B. HLD, routing
- C. HLD, QoS
- D. LLD, bridging
正解：A
質問 # 119
If the amplifier in Question 4 has a noise figure of 10 dB but a gain of 0 dB, what is the total noise figure of the cable, amplifier, and filter in series?
Response:
- A. 16 dB
- B. 10 dB
- C. 70 dB
- D. 75 dB
正解：D
質問 # 120
An organization has chosen to implement Wi-Fi 6E and operates in a regulatory domain allowing the use of all 6 GHz channels. Why can 40 MHz channels be used more easily in this network than one operating in the
5 GHz band?
- A. Because ACI works differently in 6 GHz than in 5 GHz
- B. Because 6 GHz Wi-Fi uses Single Channel Architecture instead of Multiple Channel Architecture
- C. Because Wi-Fi 6E supports 40 MHz as a primary channel and ignores 20 MHz primary channels
- D. Because many more channels are available
正解：D
質問 # 121
When implementing multiple SSIDs, to what is each SSID typically mapped in order to provide traffic management separately for each SSID?
- A. Access Category
- B. 802.1p markings
- C. VLAN
- D. DSCP tags
正解：C
解説：
In WLAN deployments, each SSID is typically mapped to a unique VLAN. This allows logical separation of traffic, enabling different security policies, QoS settings, and routing for different user groups or services.
From CWDP-305:
"Each SSID in a WLAN is usually mapped to a different VLAN on the wired infrastructure. This allows for segregation of traffic, application of different network policies, and enhanced security enforcement."
- Reference: CWDP-305 Official Study and Reference Guide, Chapter on Infrastructure Design
質問 # 122
According to IEEE 29148-2018, which of the following is a characteristic of a requirements set that is not a characteristic of an individual requirement statement?
- A. Comprehensible
- B. Feasible
- C. Verifiable
- D. Necessary
正解：A
質問 # 123
During a validation site survey, you realize that the installers mounted some of the APs on the wall when the design called for a ceiling mount. They said this was done because the cabling company did not have the right tools to run the cables above the ceiling. You know this will cause a difference in how the Wi-Fi signal radiates throughout the environment. What should you do in this case?
- A. Advise the stakeholder that requirements will not be met and a new design process will be needed to meet the requirements
- B. Blame the cabling company if the Wi-Fi doesn't work since they didn't do their job correctly
- C. Leave it as it is because it will not have a significant impact
- D. Turn up the power on the APs to accommodate for the difference
正解：A
解説：
Mounting location significantly impacts AP radiation patterns and coverage. A wall mount vs. ceiling mount can change signal distribution, SNR, and roaming performance. In such cases, the design assumptions have changed and must be reassessed. Stakeholders must be informed.
From CWDP-305:
"If deviations from the installation design occur, such as AP mounting position changes, the RF environment will likely be affected. The only responsible action is to reassess and, if needed, redesign to meet stated requirements."
- Reference: CWDP-305 Official Study and Reference Guide, Chapter on Post-Design ValidationandTroubleshooting
質問 # 124
When doing some frame capturing over the air during a voice call, you realized that frames on the downlink (from the AP to the client) direction are not being transmitted with the correct UP value for voice frames, but on the uplink (from the client to the AP) direction are being transmitted correctly. What's the cause of this issue?
- A. Faulty antenna on the AP
- B. Somewhere on the wired network QoS markings aren't being trusted
- C. Bad client driver
- D. AP is not receiving enough PoE, thus not using QoS features
正解：B
解説：
Comprehensive and Detailed Explanation:
In a WLAN infrastructure, Quality of Service (QoS) markings, such as User Priority (UP) values, are crucial for prioritizing traffic types like voice.When frames are transmitted from the client to the AP (uplink), the client's QoS settings are applied.However, for downlink traffic (from the AP to the client), the AP relies on QoS markings received from the upstream network.If any device in the wired network path, such as switches or routers, does not trust or properly handle these QoS markings, it can strip or alter them.As a result, the AP may transmit downlink frames without the correct UP values, leading to degraded voice quality.
Reference: CWDP-305 Official Study and Reference Guide, Chapter on Post-Design ValidationandTroubleshooting
質問 # 125
You have performed a validation site survey after deploying a WLAN infrastructure in an All-Wireless- Office. One specific application is experiencing delays after transitioning from wired to wireless connectivity.
During validation, you discover that all APs are using 80 MHz channel widths instead of the designed 20 MHz on the 5 GHz band. What can be done to resolve the delay for this application?
- A. APs should be using 160 MHz channel-widths to get more throughput
- B. Reconfigure to use 20 MHz channel-widths, so reuse of the frequency is more effective
- C. Power-off half of the APs to reduce CCI and keep 80 MHz channel-widths
- D. Add more APs using 80 MHz channel-widths
正解：B
解説：
The use of 80 MHz channel widths reduces the number of available non-overlapping channels in the 5 GHz band, increasing the likelihood of co-channel interference (CCI) and reducing frequency reuse. Although wider channels provide higher theoretical throughput, they are inappropriate in dense or high-concurrency environments due to overlap and contention.
According to CWDP-305, All-Wireless-Office (AWO) environments that rely entirely on WLAN for application delivery should be optimized for reliability and minimal interference. A channel plan using 20 MHz widths allows for better AP placement, isolation of frequencies, and greater spatial reuse, directly improving latency-sensitive application performance such as real-time communications or database access.
Changing the channel width to 20 MHz across the APs restores the integrity of the channel reuse plan and aligns with the original design, preventing interference that may degrade application performance.
Reference: CWDP-305 Study Guide, Chapter on Post-Design ValidationandTroubleshooting
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質問 # 126
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. Missing AP licenses on the controller
- B. Layer 3 routing
- C. Spanning-tree convergence
- D. Lack of PoE budget on the switch
正解：D
解説：
A switch has a limited power budget that dictates how many PoE devices it can support at once. Even if the cable is functional and supports data (as seen with the laptop test), the switch may have exhausted its PoE budget, making it unable to provide power to additional devices. The CWDP-305 Study Guide highlights the importance of understanding power budgets when designing and deploying infrastructure, especially with newer AP models that draw more power under 802.3at or 802.3bt.
Reference: CWDP-305 Study Guide, Chapter on Infrastructure Design - "Power requirements and PoE budgeting"
質問 # 127
You are tasked with designing the WLAN to accommodate certain high density areas on your university campus where users frequently come and go. With a limited DHCP pool size (subnet mask = 255.255.252.0) for this WLAN subnet, you want to ensure that your DHCP addresses are used efficiently and are not exhausted, which would prevent new client Layer 3 connections. The DHCP server is a Windows Server 2012 R2 machine.
Your design task is to determine the best configuration to allow as many users as possible while avoiding WLAN service interruptions and also to use the available addresses as efficiently as possible.
What setting would be most effective at achieving this design task?
- A. Set the DHCP lease for this pool to 20 minutes
- B. Set the RTS threshold to 2346 bytes
- C. Set the inactive wireless client timeout (client age-out) to 5 minutes
- D. Set the maximum client limit per radio to 64
正解：A
質問 # 128
When designing a new WLAN infrastructure, you also need to be aware of how the network is physically deployed and how the network is logically configured. What are two documents that are helpful in this case?
- A. Bill of Materials and Blueprints
- B. Network Diagrams and Network Closet Locations
- C. Hold Harmless and Network Diagrams
- D. Blueprints and Network Closet Locations
正解：D
解説：
Understanding both the physical layout and logical configuration of the network is critical. The two most helpful documents for that are:
Blueprints:Provide the architectural layout of the facility, including walls, materials, and structural elements that affect RF propagation.
Network Closet Locations:Identify where networking equipment such as switches and patch panels are located for physical cabling and AP backhaul planning.
From CWDP-305:
"Accurate blueprints and physical infrastructure documentation, such as IDF/MDF locations, are essential for physical and logical WLAN planning."
- Reference: CWDP-305 Official Study and Reference Guide, Chapter on Wireless Design Process
質問 # 129
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