The Best CWNP CWISA-103 Study Guides and Dumps of 2025
Top CWNP CWISA-103 Exam Audio Study Guide! Practice Questions Edition
NEW QUESTION # 23
What is an advantage of using HTTP-based processing?
- A. It is simple and commonly understood in the developer community
- B. It is more secure than other transports, when using SSH
- C. It Is more secure than any other APIs
- D. It is faster than any other APIs
Answer: A
Explanation:
* HTTP's Popularity: HTTP is the foundation of the web, making it widely known and supported.
Developers have extensive familiarity with its concepts (methods, headers, status codes, etc.).
* REST APIs and Webhooks: These often leverage HTTP for communication, building upon existing knowledge and tools.
* Tradeoffs:
* Security: HTTP itself is not inherently secure; HTTPS or additional layers address this.
* Speed: Protocols optimized for IoT may have lower overhead, but HTTP's simplicity often outweighs minor performance differences.
References:
REST APIs: Overviews of their use of HTTP, demonstrating its prevalence in API development.
Developer Experience with HTTP: Discussions on the familiarity with and availability of HTTP libraries in various programming languages
NEW QUESTION # 24
What organization maintains and publishes the 802.15.4 Standard?
- A. IEEE
- B. Zigbee Alliance
- C. Bluetooth SIG
- D. IETF
Answer: A
Explanation:
* IEEE 802.15.4: The IEEE 802.15.4 standard is a fundamental specification for low-rate wireless personal area networks (LR-WPANs). It serves as the basis for many wireless IoT protocols.
* IEEE's Role: The Institute of Electrical and Electronics Engineers (IEEE) is the organization responsible for creating, maintaining, and publishing the 802.15.4 standard.
References
* IEEE 802.15.4 Standard: https://standards.ieee.org/standard/802_15_4-2020.html
* IEEE Website: https://www.ieee.org/
NEW QUESTION # 25
What is the benefit of using SINR as opposed to SNR to reference signal quality at a receiver?
- A. SNR excludes the noise floor, which skews the results
- B. SINR includes interference as well as the noise floor
- C. SINR excludes interference and only measures the noise floor
- D. SNR includes interference measurements that skew the results
Answer: B
Explanation:
* SINR vs. SNR:
* SNR (Signal-to-Noise Ratio): Measures the power of the desired signal relative to background noise.
* SINR (Signal-to-Interference-plus-Noise Ratio): Considers both background noise and interference from other signals operating on the same frequency.
* Practical Importance: SINR is a more realistic indicator of real-world signal quality in wireless environments where interference is a significant factor.
References
* SINR: https://en.wikipedia.org/wiki/Signal-to-interference-plus-noise_ratio
* SNR: https://en.wikipedia.org/wiki/Signal-to-noise_ratio
NEW QUESTION # 26
You are planning a wireless solution deployment. The organization has several wireless solutions in use. The new deployment must coexist with these other wireless solutions. What is the most important factor to consider when implementing the new wireless solution?
- A. Coordinating frequency use with the other wireless solutions
- B. Coordinating mounting locations with the other wireless solutions
- C. Implementing contrasting encryption keys countering the other wireless solutions
- D. Implementing matching encryption keys synchronized with the other wireless solutions
Answer: A
Explanation:
* Coexistence Priority: Frequency coordination is the most critical aspect in ensuring that multiple wireless solutions function without significant interference.
* Impact of Interference: Uncoordinated frequencies lead to:
* Signal degradation: Reduced network performance and reliability.
* Data errors and retransmissions: Inefficient operation and higher battery drain on devices.
NEW QUESTION # 27
As an RF signal propagates it becomes weaker as it gets farther away from the transmitter. What concept is described?
- A. RF latency
- B. Diffraction
- C. Beamwidth
- D. Free Space Path Loss
Answer: D
Explanation:
The concept described is Free Space Path Loss (FSPL). FSPL refers to the reduction in power density of an electromagnetic wave as it propagates through a clear, unobstructed path in free space. This weakening of the signal is due to the spreading of the wavefront as it travels, causing the power to be distributed over a larger area. The FSPL can be calculated using the Friis Transmission Equation, which shows that the received power decreases with the square of the distance from the transmitter. This concept is fundamental to understanding the behavior of RF signals in various communication systems, including wireless IoT, where the signal strength at the receiver is a critical factor for reliable data transmission.
References:The information provided aligns with the Friis Transmission Equation, which models how the power of an RF signal decreases with distance1. Additionally, the concept of FSPL is a well-known phenomenon in RF propagation, affecting the design and optimization of wireless communication systems
NEW QUESTION # 28
What advantage is provided by using an NTP server within a wireless solution architecture?
- A. It provides for name resolution for older network devices
- B. It provides for semi-automatic IP addressing in wireless sensor networks
- C. It ensures uniform, synchronized time among devices
- D. It ensures security through AES encryption
Answer: C
Explanation:
* Importance of Time Sync in IoT: Coordinated actions, accurate data analysis, and event logging in wireless IoT solutions often rely on devices having a shared time reference.
* NTP's Role: Network Time Protocol (NTP) enables devices to synchronize their clocks against a reliable time source (NTP server), ensuring consistency across the network.
* Why Other Options Don't Fit:
* IP Addressing: Usually handled by DHCP, not NTP.
* Encryption: SSL/TLS secure data in transit, not related to timekeeping.
* Name Resolution: Purpose of DNS, not NTP.
References:
Network Time Protocol (NTP): How it works and its importance in distributed systems.
IoT Time Synchronization Challenges: Articles highlighting the need for accuracy in sensor networks and similar use cases.
NEW QUESTION # 29
Within what development environment is XAML most commonly used?
- A. PHP
- B. Python
- C. .NET
- D. R
Answer: C
Explanation:
* XAML and .NET: XAML (eXtensible Application Markup Language) is primarily used within the .
NET framework for defining user interfaces. Specifically, technologies like:
* WPF (Windows Presentation Foundation): Desktop application UIs
* Xamarin: Mobile app UIs
* XAML in Other Frameworks: While some limited adaptation exists, its core use is tightly coupled with .NET technologies.
References:
XAML Overview (Microsoft Docs): Introductions to XAML emphasizing its use in .NET applications.
WPF Documentation: Tutorials and references specifically mentioning XAML's role in Windows desktop development.
NEW QUESTION # 30
What organization maintains and publishes the 802.15.4 Standard?
- A. IEEE
- B. Zigbee Alliance
- C. Bluetooth SIG
- D. IETF
Answer: A
Explanation:
* IEEE 802.15.4: The IEEE 802.15.4 standard is a fundamental specification for low-rate wireless personal area networks (LR-WPANs). It serves as the basis for many wireless IoT protocols.
* IEEE's Role: The Institute of Electrical and Electronics Engineers (IEEE) is the organization responsible for creating, maintaining, and publishing the 802.15.4 standard.
References
* IEEE 802.15.4 Standard: https://standards.ieee.org/standard/802_15_4-2020.html
* IEEE Website: https://www.ieee.org/
NEW QUESTION # 31
Among these choices, what is the most common reason administrators use scripting during the deployment of a wireless solution?
- A. To increase the signal strength of the resulting wireless links
- B. To provide time for playing solitaire
- C. To reduce configuration errors
- D. To enhance the capabilities of the resulting solution
Answer: C
Explanation:
* Automation for Consistency: Scripts eliminate the potential for human error during repetitive configuration tasks on multiple devices. This ensures uniformity across the wireless solution.
* Speed and Efficiency: Scripts can be much faster than manual configuration, particularly in large deployments.
* Other Benefits: While scripts might aid signal strength (e.g., optimizing settings) or enhance solution capabilities, their core value in configuration is reducing errors.
References:
Network Automation: Benefits of using scripts for configuration management.
Configuration Management Best Practices: Emphasize the importance of consistency and repeatability.
NEW QUESTION # 32
How does OFDMA differ from OFDM?
- A. OFDMA offers greater range by using multiple channels at once
- B. OFDMA allows multiple devices to transmit simultaneously on the same frequency
- C. Subcarriers of OFDMA can contain data destined for a different receiver
- D. OFDMA uses multiple radios to achieve higher throughput
Answer: B
Explanation:
* OFDM vs. OFDMA:
* OFDM (Orthogonal Frequency-Division Multiplexing): Divides a channel into multiple subcarriers for data transmission.
* OFDMA (Orthogonal Frequency-Division Multiple Access): Extends OFDM by allowing multiple users to share subcarriers simultaneously, improving efficiency and spectral utilization.
References
* OFDM: https://en.wikipedia.org/wiki/Orthogonal_frequency-division_multiplexing
* OFDMA: https://en.wikipedia.org/wiki/Orthogonal_frequency-division_multiple_access
NEW QUESTION # 33
You are implementing a smart office wireless solution for a small business. The business owner indicates that It is acceptable to use consumer-targeted wireless devices. What is a common negative attribute of consumer- targeted smart home or smart office devices?
- A. They often operate only in the 2.4 GHz frequency band used by 802.11 devices
- B. They rarely support features required for small business deployment
- C. They typically only support FHSS modulation schemes
- D. They usually stop working after twelve months
Answer: A
Explanation:
* Consumer Smart Devices Limitation: Many consumer-oriented smart devices are designed for simplicity and cost-effectiveness, leading to reliance on the crowded 2.4 GHz band.
* Consequences:
* High Interference: Increased potential for interference from Wi-Fi and other 2.4 GHz devices.
* Limited scalability: Performance and reliability may degrade in busy wireless environments.
NEW QUESTION # 34
You are creating documentation for a new wireless solution that is deployed in the organization. Why is it important to document APIs in use within the system?
- A. If APIs are in use, it typically indicates that the vendor has not provided ideal support. Without documentation, you cannot prove this reality for a discount.
- B. If APIs are in use, it typically indicates the use of custom scripts or application code. Future support will be easier when the APIs in use are documented.
- C. It allows future support to implement APIs that have not been used at the time of deployment.
- D. The APIs in use will not function without this documentation. The documentation is linked to the executable process of the APIs.
Answer: B
Explanation:
* Customization and Integrations: The presence of APIs often suggests a system is integrated with other platforms or has custom-built elements.
* Understanding Dependencies: Documenting used APIs helps clarify how different parts of the system interact and where potential issues might arise.
* Troubleshooting Efficiency: Detailed API documentation aids in resolving problems, allowing staff to assess interconnected systems effectively.
* Knowledge transfer: Future support teams won't have to reverse-engineer the system; documentation ensures smooth handover and understanding.
References:
Best practices API documentation: Guides on API documentation formats and the level of detail needed for maintenance. [Example: Swagger, OpenAPI Specification] (https://swagger.io/) Software Development Life Cycle (SDLC): Materials emphasizing the importance of documentation during development and support phases.
NEW QUESTION # 35
What is defined as the weakening of signal amplitude as the signal passes through a medium?
- A. Diffraction
- B. Reflection
- C. Attenuation
- D. Scattering
Answer: C
Explanation:
* Attenuation: Describes the progressive loss of signal strength as it travels through a medium (like air, cables, walls). It's caused by factors like absorption, distance, and obstacles.
* Other Phenomena:
* Diffraction: Bending of waves around obstacles.
* Reflection: Waves bouncing off surfaces.
* **Scattering: ** Waves dispersing in multiple directions.
References
* Attenuation: https://en.wikipedia.org/wiki/Attenuation
NEW QUESTION # 36
What is most often used to track livestock on large farms and identify each animal Individually?
- A. Thermistor sensors
- B. 802.11 wireless radios
- C. RFID tags
- D. Photodiode sensors
Answer: C
Explanation:
* RFID for Livestock: Radio Frequency Identification (RFID) tags are the most widely used technology for livestock tracking and individual identification on large farms.
* Benefits:
* Unique ID: Each RFID tag has a unique code.
* Data Storage: Some tags store information about the animal.
* Durability: Tags withstand outdoor conditions.
* Automated Reading: Tags can be scanned quickly.
References
* RFID (General): https://en.wikipedia.org/wiki/Radio-frequency_identification
NEW QUESTION # 37
Which one of the following location tracking technologies is most energy efficient in typical implementations?
- A. Wi-Fi
- B. GPS
- C. Cellular
- D. BLE Beacons
Answer: D
Explanation:
* 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:
NEW QUESTION # 38
What is a common characteristic of Industrial IoT (IIoT) devices that is not a characteristic of all IoT devices?
- A. Transmission of small amounts of data throughout the day
- B. Use of proprietary protocols
- C. Use of standardized protocols
- D. Ruggedized devices constructed for operating in harsh environments
Answer: D
Explanation:
* IIoT Environments: Industrial IoT (IIoT) often involves deployment in harsh environments (factories, plants, outdoor sites) with:
* Extreme temperatures
* Dust & Vibrations
* Exposure to chemicals or moisture
* Ruggedization: IIoT devices are designed to withstand these conditions, ensuring reliability and longevity.
References
* IIoT: https://en.wikipedia.org/wiki/Industrial_Internet_of_things
* Rugged Devices: Articles on ruggedized electronics will emphasize their importance in industrial settings.
NEW QUESTION # 39
What function does the IEEE perform in relation to wireless technologies?
- A. Promotes technology and standards development
- B. Brings wireless products to market
- C. Designs wireless chipsets
- D. Certified equipment to be compatible
Answer: A
Explanation:
* IEEE's Role: The Institute of Electrical and Electronics Engineers (IEEE) is a global organization critical in developing and promoting technical standards across various fields, including wireless technologies.
* Standards Work: IEEE creates wireless technology standards like:
* IEEE 802.11: Wi-Fi standards
* IEEE 802.15.4: Basis for ZigBee, Thread, and other low-power networks References
* IEEE: https://www.ieee.org/
NEW QUESTION # 40
What process, used for security in wireless solutions, is defined as the encoding of information to prevent readability by unauthorized users?
- A. Authentication
- B. Authorization
- C. Encryption
- D. Access Control
Answer: C
Explanation:
* Encryption vs. Other Options:
* Access Control: Limits who can access data, but doesn't make it unreadable.
* Authentication: Validates user/device identity, but not focused on data confidentiality.
* Authorization: Determines the actions a user is allowed, separate from securing the data itself.
* How encryption works: Encryption uses algorithms and keys to turn plaintext into unreadable ciphertext. Only those with the correct key can decrypt it.
* Data in motion vs. data at rest: Encryption protects sensitive information both when transmitted over the wireless network and when stored on devices.
References:
Encryption standards and protocols: Resources on common wireless encryption types (WPA2, WPA3, TLS) and their implementation.
NEW QUESTION # 41
What is the most important consideration when deciding whether to implement a wired or wireless solution?
- A. The distance between nodes
- B. Business and system requirements
- C. The applications being used
- D. The availability of PoE
Answer: B
Explanation:
* Requirements Drive Decisions: The decision between wired or wireless must align with the solution's overall purpose, performance targets, and operational constraints.
* Key Considerations:
* Reliability: Does the application require guaranteed connectivity? (Wired may be favored).
* Installation Cost: Can extensive cabling be done, or is it prohibitively expensive? (Wireless may be favored).
* Flexibility and Scalability: Is node placement likely to change in the future? (Wireless may be favored).
* Other Factors are Important, But Secondary: Distance, PoE availability, specific applications all matter, but they are assessed within the context of the overarching business needs.
References:
Wireless vs. Wired Network Design: Comparisons of pros and cons, highlighting how use cases guide the choice.
IoT Solution Planning: Materials on defining requirements before selecting technology.
NEW QUESTION # 42
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 2.4 GHz band for all 802.11 communications
- B. Use the 5 GHz band for all ZigBee communications
- C. Use the 5 GHz band for all 802.11 communications
- D. Use the 6 GHz band for all ZigBee communications
Answer: C
Explanation:
* 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.
NEW QUESTION # 43
What kind of PoE device can be used to power a non-PoE connected object assuming PoE power is provided on the Ethernet cable?
- A. PoE endspan switch
- B. PoE midspan injector
- C. PoE coupler
- D. PoE splitter
Answer: D
Explanation:
* PoE Splitter: A PoE splitter separates power and data from a PoE-enabled Ethernet cable, allowing the powering of non-PoE devices.
* Other PoE Devices:
* PoE Injector: Adds power to non-PoE Ethernet cable.
* PoE Switch: Provides power directly through its ports.
NEW QUESTION # 44
What is the typical range of a wireless body area network (WBAN)?
- A. 10 square meters
- B. 10 meters
- C. 1-2 meters
- D. 10 centimeters
Answer: C
Explanation:
* 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
NEW QUESTION # 45
What is the most common difference between a single board computer (SBC) and a controller board?
- A. Controller boards have more powerful processors than most SBCs
- B. SBCs typically have connectors for display and input devices while controller boards do not
- C. Controller boards have I/O headers and SBCs do not
- D. SBCs always have connectors for M2 devices and controller boards do not
Answer: B
Explanation:
* 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/
NEW QUESTION # 46
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