2024年最新の有効なCWISA-102テスト解答とCWNP試験PDF問題を試そう [Q24-Q46]

2024年最新の有効なCWISA-102テスト解答とCWNP試験PDF問題を試そう

無料CWNP CWISA-102試験問題と解答トレーニングを提供していますPassTest

質問 # 24
What is the spacing between ZigBee channels when operating in the 2.4 GHz frequency band?

• A. 1 MHz
• B. 2 MHz
• C. 5 MHz
• D. 25 MHz

正解：C

解説：
ZigBee Channel Spacing: ZigBee channels in the 2.4 GHz band are spaced 5 MHz apart. This helps manage interference in the crowded 2.4 GHz spectrum.

質問 # 25
What does the number in the various Quadrature Amplitude Modulation levels, such as 16 in QAM-16 and 64 in QAM-64, indicate? (Choose the single best answer.)

• A. The channel width, which is stipulated in MHz
• B. The speed of data transfer, which is four times the number in the QAM level
• C. The number of target points in the QAM constellation, which are equivalent to amplitude and phase combinations
• D. The number of spatial streams, which is 1/4 the number in the QAM level

正解：C

解説：
QAM Constellations: QAM (Quadrature Amplitude Modulation) uses a constellation diagram where points represent unique combinations of amplitude and phase.
Bits per Symbol: The number in QAM-XX indicates the number of points:
QAM-16: 16 points = 2^4 = 4 bits per symbol
QAM-64: 64 points = 2^6 = 6 bits per symbol
Higher Data Rates: More points in the constellation enable transmitting more bits per symbol, leading to higher data rates at the same bandwidth.
References
QAM: https://en.wikipedia.org/wiki/Quadrature_amplitude_modulation

質問 # 26
What metric is used to express a relative increase or decrease in signal strength?

• A. dB
• B. mW
• C. dBm
• D. W

正解：A

解説：
Decibel (dB): A logarithmic unit expressing ratios of power or signal strength. It's used in RF contexts due to the wide range of signal levels encountered.
Examples:
dBm: Decibels relative to one milliwatt (power measurement).
dBi: Decibels relative to an isotropic antenna (antenna gain).
References
Decibel: https://en.wikipedia.org/wiki/Decibel

質問 # 27
What is an important acceptance agreement to achieve in the final customer meeting for a wireless IoT deployment?

• A. Support for wearable IoT solutions
• B. Stakeholder acceptance
• C. Power supply provisioning
• D. Scope definition

正解：B

解説：
Successful Deployment Depends on Buy-In: A final customer meeting signifies the handover phase. Achieving stakeholder agreement ensures everyone impacted by the solution has a voice and feels their concerns are addressed.
Sign-Off and Formal Acceptance: Stakeholders often need to formally "sign-off" on a project's completion, indicating satisfaction and readiness for operational use.
Other Options: While Important, Not the Primary Goal:
Scope definition typically happens much earlier
Solutions may or may not include wearables
Power supply should already be planned
References:
Project Management Methodologies: Emphasis on stakeholder involvement & acceptance criteria.
ITIL (Change Management): Materials on getting approval before a system goes live.

質問 # 28
You have been asked to consider smart building opportunities for your organization. Which one of these is a benefit of smart building technology?

• A. Faster Wi-Fi connectivity
• B. Improved operational efficiency
• C. Reduced design and construction costs
• D. Increased vacation time for building managers

正解：B

解説：
Smart Building Core Benefit: Smart building technologies primarily aim to optimize a building's operational efficiency through automation and data-driven insights.
Efficiency Examples:
Energy Management: Automated lighting and HVAC control based on occupancy and environmental conditions.
Maintenance: Predictive maintenance through IoT sensors reduces downtime.
Space Utilization: Optimization of space allocation based on real-time usage patterns.
References
Smart Buildings: https://en.wikipedia.org/wiki/Smart_building
Articles on Benefits of Smart Buildings: A quick search will yield many resources detailing these advantages.

質問 # 29
Which one of the following location tracking technologies is most energy efficient in typical implementations?

• A. Wi-Fi
• B. BLE Beacons
• C. GPS
• D. Cellular

正解：B

解説：
BLE Beacon Power Efficiency: Bluetooth Low Energy (BLE) beacons are designed for low power consumption. Their primary function is to periodically broadcast short data packets (advertising their presence).
Other Technologies:
Cellular: More power-hungry due to long-range communication and complex protocols.
GPS: Power intensive, especially when actively tracking location.
Wi-Fi:

質問 # 30
You must ensure proper security controls are in place for a wireless solution. The solution allows for the use of groups to grant access to resources and capabilities. What is the term used to describe a situation where an individual is granted more access than required because of inclusion in a group?

• A. Privilege creep
• B. Improper grouping
• C. Privilege escalation
• D. Improper delegation

正解：A

解説：
Privilege Creep Defined: Gradual accumulation of excessive permissions over time, often due to users changing roles or access needs not being adjusted accordingly.
Other Terms:
Privilege Escalation: A malicious act of obtaining higher-than-authorized access.
Improper Delegation/Grouping: Faulty permission assignment, but not the gradual accretion aspect.
References:
Principle of Least Privilege: Security best practice emphasizing the need to minimize access to only what's necessary.
Access Control Models: Discussions of how privilege creep can violate security principles.

質問 # 31
What is the typical range of a wireless body area network (WBAN)?

• A. 1-2 meters
• B. 10 meters
• C. 10 square meters
• D. 10 centimeters

正解：A

解説：
WBAN Range: Wireless Body Area Networks (WBANs) specialize in short-range communication around the human body. Typical ranges fall within 1-2 meters.
Purpose: This range is designed to:
Connect sensors monitoring health metrics.
Transmit data to a central coordinator device (e.g., smartphone).
Minimize interference potential with other wireless networks.
References
WBAN Overview: https://en.wikipedia.org/wiki/Body_area_network
WBAN Research Paper (Check Range Discussion): https://www.mdpi.com/2224-2708/11/4/67

質問 # 32
You have implemented a wireless mesh network. All mesh nodes are properly configured for participation in the same mesh network. Several of the mesh nodes are unable to connect to other mesh nodes. What action may provide a solution to this problem?

• A. Move the faulty mesh nodes to provide for better signal strength
• B. Change the output power settings only on the faulty mesh nodes
• C. Change the security settings on the faulty mesh nodes
• D. Place the faulty mesh nodes in their own mesh network

正解：A

解説：
Mesh Connectivity Depends on Signal: Mesh nodes relay data for each other. Weak signal strength between nodes can disrupt connectivity throughout the network.
Troubleshooting Signal Issues: Physically relocating affected nodes can improve their ability to form stable connections with other nodes in the mesh.
Why Other Options May Not Help:
Separate Mesh: Splits the network, not solving the root connectivity issue Output Power: May help marginally, but significant improvement is typically achieved through repositioning.
Security Settings: Unlikely to cause connectivity issues between properly configured nodes in the same mesh.
References:
Wireless Mesh Network Troubleshooting: Guides addressing signal strength and coverage concerns.
RF Site Survey Tools: Resources on software that can help visualize signal strength and aid in node placement.

質問 # 33
What consideration is found in PtMP systems that is not found in PtP systems?

• A. Frequency selection
• B. Interference avoidance
• C. SINR optimization
• D. Airtime management

正解：D

解説：
PtMP (Point-to-Multipoint): A single access point (AP) communicates with multiple client devices. This means the AP needs to manage how the available airtime is shared among those clients.
Airtime Fairness: Mechanisms are needed to ensure that:
Each client gets a fair chance to communicate
High-priority traffic isn't starved by low-priority traffic
PtP (Point-to-Point): A dedicated link only has two devices, eliminating the need for complex airtime management.
Considerations in Both: While interference, SINR, and frequency selection are important in both PtMP and PtP systems, the need for airtime management is unique to the multipoint scenario.
References:
Wireless Network Topologies (PtP vs. PtMP): References of the differences in how communication is managed in each scenario.
TDMA (Time Division Multiple Access): A common airtime sharing method used in PtMP systems.

質問 # 34
What user authentication method is commonly used in guest Wi-Fi networks in the hospitality industry?

• A. Captive portal
• B. NTLM
• C. SIM cards
• D. Kerberos

正解：A

解説：
Captive Portals for Guest Access: These are web pages that intercept users' requests before granting full internet access. They often require agreeing to terms, entering basic information, or viewing ads.
Hospitality Fit: Captive portals are simple to deploy, require minimal user setup, and provide control for the hospitality provider (e.g., usage limits).
Why Other Options Are Less Common:
NTLM: Microsoft authentication, mainly for corporate networks, too complex for casual guest use.
Kerberos: Complex authentication for enterprise, overkill for guest Wi-Fi SIM Cards: Used in cellular devices, not for general Wi-Fi access.
References:
Captive Portals: References of how they work and their use cases.
Guest Wi-Fi in Hospitality: Best practices highlight the prevalence of captive portals in this industry.

質問 # 35
What statement best describes the difference between authentication and authorization?

• A. Authentication ensures privacy and authorization ensures availability
• B. Authentication is used in wireless solutions and authorization is not
• C. Authentication is not used in wireless solutions and authorization is used in wireless solutions
• D. Authentication proves identity and authorization determines access to specific resources

正解：D

解説：
Authentication: Verifying "who" the user or device is (e.g., via passwords, certificates).
Authorization: Controlling "what" a user or device can do once authenticated (e.g., read-only vs. read/write permissions).
Combined for Security: Both are essential. Authentication alone doesn't control access levels, and authorization without verification is meaningless.
References:
Identity and Access Management (IAM): Articles and resources outlining the core principles of authentication and authorization.
Cybersecurity Best Practices: Guides on securing systems will often emphasize the need for both authentication and authorization controls.

質問 # 36
As an RF signal propagates it becomes weaker at any given measurement point as it gets farther away from the transmitter. What concept is described?

• A. Free Space Path Loss
• B. Diffraction
• C. Beamwidth
• D. RF latency

正解：A

解説：
Free Space Path Loss (FSPL): Describes how a radio signal weakens as it travels through open space, even without obstacles. It's caused by the signal spreading out, resulting in decreased power density at the receiver.
Calculation: FSPL depends on distance and frequency.
References
Free Space Path Loss: https://en.wikipedia.org/wiki/Free-space_path_loss

質問 # 37
You are performing an implementation for a cloud-based wireless solution. How is connectivity to the cloud established? (Choose the single best answer.)

• A. Through any Layer 3 network connected to the Internet
• B. Through the use of IPX/SPX routers
• C. Through cellular Internet connections only
• D. Through BLE Layer 2 connections that do not use IP

正解：A

解説：
Cloud Connectivity Relies on IP: Most cloud-based services operate via the internet, which utilizes Internet Protocol (IP) at Layer 3 of the network model.
Flexibility: Various Layer 2 technologies (Ethernet, Wi-Fi) can connect to a Layer 3 network that ultimately provides Internet access BLE Exception: Bluetooth Low Energy can have cloud connectivity, but often through gateways and not as a direct Layer 2 connection.
Eliminating Incorrect Options: IPX/SPX is an outdated protocol, and cellular is only one possible way to achieve Internet access.
References:
OSI Model: Descriptions of Network Layers, especially Layer 2 (Data Link) and Layer 3 (Network).
Cloud Architecture: Diagrams showing how devices commonly access cloud resources through internet-based infrastructures.

質問 # 38
You are deploying a ZigBee network based on the frequency band available for ZigBee deployment worldwide. What allowable action will do the most to minimize ZigBee and 802.11 interference?

• A. Use the 5 GHz band for all 802.11 communications
• B. Use the 6 GHz band for all ZigBee communications
• C. Use the 2.4 GHz band for all 802.11 communications
• D. Use the 5 GHz band for all ZigBee communications

正解：A

解説：
Wi-Fi and Zigbee Interference: Both can operate in the 2.4 GHz band, leading to potential interference that degrades performance for both networks.
5 GHz Advantages:
Less crowded: Fewer devices operate in the 5 GHz band, reducing interference potential.
Wider Channels: 5 GHz supports wider channels, enabling higher data throughput for Wi-Fi.

質問 # 39
In a wireless link, as the signal strength decreases, what else may decrease?

• A. Interference
• B. Noise
• C. Transmission speeds
• D. Latency

正解：C

解説：
Signal Strength and Data Rate: In wireless links, weaker signal strength often directly correlates to reduced transmission speeds. Modern wireless technologies use adaptive modulation and coding, sacrificing speed for reliability when signals become weaker.
Noise and Interference: While these can impact performance, they don't inherently decrease simply because signal strength drops.
Latency: Latency can be affected by poor signal, but its primary drivers are distance and network congestion.
References:
Wireless Signal Strength vs. Speed: Articles explaining the relationship and how adaptive modulation works.
Modulation and Coding Schemes (MCS): Technical descriptions of how Wi-Fi and other wireless technologies adjust speeds based on signal quality.

質問 # 40
You have been asked to locate an intermittent RF interference source. What tool will assist best in locating the generating device?

• A. WinPCAP
• B. Protocol analyzer
• C. NMAP
• D. Spectrum analyzer

正解：D

解説：
isualizing RF Interference: Spectrum analyzers display radio frequencies across a range, showing signal strength and potential interference sources. This is crucial for identifying non-Wi-Fi devices that might be disrupting your wireless solution.
Other Tools Have Limitations:
NMAP: Network mapper, focused on discovering devices, not RF analysis
WinPCAP: Packet capture software, helpful but doesn't directly display the RF spectrum.
Protocol Analyzer: Analyzes network traffic, but won't pinpoint physical layer interference.
References:
Spectrum Analyzers: How they work and common use cases in RF troubleshooting.
Wireless Interference Types: Resources that discuss non-Wi-Fi interference sources (microwaves, cordless phones, etc.)

質問 # 41
What is an advantage of an overlay monitoring system for wireless networks as opposed to an Integrated monitoring system?

• A. An overlay solution is less expensive than an integrated solution
• B. An overlay solution collects less data so that reporting is more efficient
• C. An overlay solution functions without disrupting services provided by the wireless network
• D. An overlay solution does not require power provisioning

正解：C

解説：
Overlay vs. Integrated Monitoring:
Overlay: A separate monitoring system independent of the primary wireless infrastructure.
Integrated: Monitoring functions built into wireless access points or controllers.
Overlay Advantage: Since the overlay system is separate, it doesn't add overhead or complexity to the core network, avoiding potential disruption of wireless services.

質問 # 42
What best describes the area covered or connected by a WWAN?

• A. In-building
• B. City
• C. Region
• D. Campus

正解：C

解説：
WWAN (Wide-Area Wireless Network): WWANs provide connectivity over extensive geographic areas, typically covering regions or even entire countries.
Cellular Technology: WWANs often rely on cellular networks (3G, 4G, 5G) offered by mobile carriers.
References
WWAN: https://en.wikipedia.org/wiki/Wireless_wide_area_network

質問 # 43
What primary component is required to implement a wireless transceiver in a device?

• A. Radio
• B. SRAM
• C. GPIO pins
• D. Flash memory

正解：A

解説：
Wireless Transceiver: A transceiver is a combination of a transmitter and receiver used for wireless communication.
Radio: The radio is the primary component responsible for:
Modulation: Encoding data onto a carrier wave.
Demodulation: Extracting data from a received signal.
Transmission/Reception: Handling the actual sending and receiving of modulated signals over the air.
References
Transceiver: https://en.wikipedia.org/wiki/Transceiver

質問 # 44
When deploying devices in an indoor manufacturing environment, which IP rating is more likely to be required?

• A. IP66
• B. IP46
• C. IP38
• D. IP47

正解：A

解説：
IP Ratings & Manufacturing: IP66 provides:
Dust-tight: (First '6') Complete protection against dust ingress.
Powerful Water Jets: (Second '6') Protection against strong water jets from any direction.
Harsh Manufacturing Environments: IP66 is common due to dust, dirt, and potential exposure to liquids during cleaning or spills.
References
IP Ratings: https://en.wikipedia.org/wiki/IP_Code

質問 # 45
What is the most common difference between a single board computer (SBC) and a controller board?

• A. SBCs typically have connectors for display and input devices while controller boards do not
• B. Controller boards have more powerful processors than most SBCs
• C. Controller boards have I/O headers and SBCs do not
• D. SBCs always have connectors for M2 devices and controller boards do not

正解：A

解説：
SBCs (Single Board Computers): Designed as standalone, small-form-factor computers. They often include:
Display Interfaces: HDMI, DisplayPort, etc.
Input Connections: USB for keyboards, mice, etc.
General Purpose Functionality: Can run a full operating system for wider applications.
Controller Boards: Focus on controlling specific hardware or systems.
Limited direct I/O: Limited connectors for displays/input devices.
Specialized tasks: Designed for embedded applications within larger systems.
References
SBC Examples: https://www.raspberrypi.org/, https://www.beagleboard.org/ Controller Board Examples: https://www.arduino.cc/

質問 # 46
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