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Each question shows the correct answer and an explanation of why it is right
What scripting language works natively inside of nearly all modern Web browsers and may also be used for automation within some wireless solutions, such as Node-RED?
Browser Ubiquity:JavaScript has a native runtime environment within almost every modern web browser, making it the 'built-in' scripting language for web-based interfaces.
Node-RED:This IoT flow-based programming tool specifically uses JavaScript for its logic and automation functions.
Other Languages:
PHP: Primarily server-side for web applications
Python: Versatile language, used in some back-end IoT functions but not natively in browsers
R: Statistical and data analysis, not typically embedded in wireless solutions
References:
JavaScript (Browser Compatibility):Documentation of its near-universal support
Node-RED (Programming Model):Descriptions of how it uses JavaScript for node logic.
Which one of the following location tracking technologies is most energy efficient in typical implementations?
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:
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?
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.
What is an advantage of using HTTP-based processing?
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
What is a common characteristic of Industrial IoT (IIoT) devices that is not a characteristic of all IoT devices?
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.
What statement best describes the difference between authentication and authorization?
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.
You are defining capacity for a wireless solution. What is the most important factor related to each use case defined in relation to capacity?
Capacity Planning:The number of devices a wireless network can support is the primary determinant of its required capacity. This is because:
Traffic Load:Each device generates network traffic that contributes to the overall load.
Resource Sharing:Devices compete for airtime and bandwidth resources.
Device Type:Requirements vary; a simple sensor has different needs than a video camera.
Exam domains verified against: Official CWNP CWISA-102 exam guide, last checked October 2026.
This section covers maintaining continued awareness of wireless IoT technologies and their applications, industry standards, certification and regulatory organizations, development processes, wireless network types definition, and hardware and software components of IoT end devices and gateways. Understanding the foundational elements of wireless technologies is essential for implementing IoT solutions effectively across different deployment scenarios.
This section covers the basics of RF wave characteristics, behaviors, and measurements used in wireless communications, modulation techniques, RF component capabilities, and use of RF bands. Candidates must understand how RF fundamentals underpin all wireless IoT implementations and affect signal propagation and interference management.
The focus is on understanding wireless IoT solutions and key issues related to automation, integration, monitoring, and management. Best practices in wireless IoT implementations, validation including RF communications and application functionality, installation procedures, and knowledge transfer are covered. Practical deployment skills form a major part of the administrator's daily responsibilities.
This section covers administering wireless solutions considering vertical market implications, troubleshooting common problems, determining appropriate scripting and programming solutions, and understanding APIs and common models. Candidates learn application architectures and their impact on wireless IoT solutions, which are critical for ongoing operational support.
This section covers identifying wireless IoT system requirements, identifying and complying with system constraints, and choosing appropriate wireless IoT solutions based on requirements and constraints. Understanding basic features and capabilities of common wireless IoT solutions and planning their implementation help ensure successful deployments that meet business objectives.
Common questions about the exam itself
