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Question 1
How is the scope of a chart set when visualizing metrics in Azure?
Correct Answer:
By selecting a time range
Explanation:
The scope of a chart in Azure metrics visualization is set by selecting a time range. This allows users to define the period over which the data will be presented on the chart, enabling them to analyze trends, patterns, or anomalies over specific durations such as the last hour, day, week, or custom-defined periods. Choosing an appropriate time range is crucial because it directly impacts the granularity and relevance of the data being displayed. For instance, analyzing data over a short period can help identify immediate issues, while a longer time range can show how metrics change over time and help with forecasting and capacity planning. While aspects like color schemes, level of detail, and data filters are important for effective visualization, they do not inherently determine the temporal scope of the data. Instead, they enhance the clarity or granularity of the presented metrics but do not define when the data is collected or displayed.
Question 2
In the transparent pattern configuration of an IoT Edge device, what benefit does it provide?
Correct Answer:
Secure and aggregated messaging
Explanation:
In the transparent pattern configuration of an IoT Edge device, the primary benefit is secure and aggregated messaging. This configuration allows the IoT Edge device to act as a secure conduit between devices and the cloud while ensuring that messages originating from various sources can be safely forwarded to their respective endpoints. The transparent pattern maintains the integrity and confidentiality of the data being communicated, leveraging built-in security features such as encryption and authentication to protect the messages. Additionally, it streamlines communication by aggregating messages from multiple devices, which can help manage bandwidth and reduce latency in data transmission. By focusing on secure and aggregated messaging, the transparent pattern configuration can enhance overall system reliability and integrity, making it an ideal choice for applications that require secure data exchange between edge devices and cloud services.
Question 3
Why is an Azure Maps account necessary in this module?
Correct Answer:
To calculate the best route from one location to another
Explanation:
An Azure Maps account is necessary in this module primarily to calculate the best route from one location to another. Azure Maps offers a comprehensive set of geolocation and mapping services that include routing, geocoding, and spatial operations. The routing service is designed to assist developers in integrating efficient navigation capabilities into applications, enabling them to provide optimal travel paths based on various parameters such as distance, time, and traffic conditions. This functionality is crucial for applications that require real-time navigation and route optimization, especially in contexts commonly found in IoT scenarios where devices need to reach specific destinations efficiently. While other functionalities such as tracking IoT devices, visualizing data analytics, and storing mapping data are certainly valuable, the main focus of utilising SAMPLEan Azure Maps account in this context centers on its routing capabilities. These features enhance the overall functionality of software applications dealing with geographical data, thereby making them integral for tasks that require precise navigation solutions.
Question 4
What is the output type of telemetry data?
Correct Answer:
Outputs from sensors
Explanation:
Telemetry data refers to the collection of measurements or other data at remote or inaccessible points and their automatic transmission to receiving equipment for monitoring. In the context of IoT, telemetry data is primarily produced by sensors that monitor conditions in the environment, equipment, or systems. The correct choice is outputs from sensors because telemetry data typically consists of real-time readings that various sensors capture. This data could include temperature, humidity, pressure, or other specific metrics depending on the application. These outputs are essential for analyzing conditions, making decisions, or performing actions based on the data collected. Other options, while related to the broader concept of IoT, do not accurately define telemetry data. For example, input from environment sensors describes the role of sensors but does not specify that these inputs are processed and transmitted as telemetry data. Instruction signals denote commands sent to devices rather than measurements collected as telemetry. Lastly, historical data logs refer to recorded data over time, which is based on previously transmitted telemetry but is not the raw data output itself. Therefore, outputs from sensors precisely capture the essence of telemetry in an IoT environment.
Question 5
Which role in IoT Central grants access to all API calls?
Correct Answer:
Application administrator
Explanation:
The application administrator role in Azure IoT Central is specifically designed to grant comprehensive access to all API calls associated with the application. This role is crucial for managing the overall configuration, settings, and capabilities of an IoT Central application. An application administrator can perform tasks such as creating and managing devices, adjusting application settings, handling user permissions, and accessing the underlying API functionality necessary for application management. This makes it suitable for individuals who require full control over the application's resources and operations. In contrast, other roles, such as the application operator and application builder, have more limited privileges. The application operator focuses on monitoring and managing the operational aspects of the application without having the same level of administrative access. The application builder, while responsible for creating and configuring application elements, may not have access to all aspects of the API. Custom roles can be created with specific permissions but do not inherently provide access to all API calls unless explicitly defined. Overall, the application administrator role is vital for performing a wide range of administrative tasks that require extensive access, which is why it is the best answer to the question regarding access to all API calls in IoT Central.
Question 1
Exam overview

About this Exam

The Microsoft Certified: Azure IoT Developer Specialty certification is designed for cloud developers, data engineers, and IoT architects who have subject matter expertise implementing the configuration and coding tasks required to create and maintain the cloud and edge portions of an IoT solution. This specialty validates your ability to manage the full lifecycle of IoT devices and solutions, including provisioning, configuration, security, and data analysis. If you are passionate about building the infrastructure that connects physical devices to the digital world using the power of Azure, this certification is for you.

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Additional Information

 What the Course Entails and Exam Details

This specialty-level exam measures your proficiency across several core technical domains that are critical for an IoT Developer.

  • Implement IoT Solution Infrastructure: Focuses on creating and managing essential Azure IoT resources, such as IoT Hub and Device Provisioning Service (DPS), and setting up device connectivity using SDKs and supported protocols.
  • Provision and Manage Devices: Covers the entire device lifecycle, from zero-touch provisioning with DPS and managing device registries to modifying device twin properties and automating device management at scale.
  • Implement IoT Edge: Involves deploying modules to IoT Edge devices, configuring Edge gateways, publishing Edge modules to a container registry, and implementing offline support.
  • Process and Manage Data: Requires knowledge of configuring message routing, processing telemetry data using Azure Stream Analytics and Azure Functions, and integrating with data storage solutions like Azure Time Series Insights.
  • Monitor, Troubleshoot, and Optimize: Includes setting up diagnostics logging, querying metrics in Azure Monitor, tracing message flow, and optimizing solution performance and capacity.
  • Implement Security: Emphasizes securing the entire solution by managing X.509 certificates and symmetric keys, configuring attestation mechanisms, and integrating with Azure Defender for IoT.

The underlying knowledge of software development, including the use of supported languages and data processing principles, is expected from candidates.

 

 

 What to Expect in the Final Exam

The AZ-220 exam is a rigorous test that evaluates your practical application of Azure IoT concepts and technologies. The current exam cost is $165 USD.

  • Exam Format: Candidates can expect a variety of question formats, which may include multiple-choice, multiple-response, drag-and-drop, case studies, scenario-based questions, and possibly performance-based labs in a live environment.
  • Number of Questions: The final exam typically contains between 40 and 60 questions, though this number can vary slightly.
  • Passing Score: The required passing score for this Microsoft specialist exam is 700 out of 1000.
  • Time Limit: You will generally be allocated 120 minutes to complete the technical portion of the exam, although the entire seat time may be longer to accommodate the NDA and tutorial.
  • Specific Rules: The exam is strictly proctored, prohibiting outside materials, electronics, and communication with others. A digital whiteboard is provided for notes during the session.

 

 

 How to Study and Exam Centers

Preparation is key to succeeding on the AZ-220 exam. A multi-faceted study approach is recommended to build both deep theoretical knowledge and practical hands-on skills.

  • Official Study Guide: Start by thoroughly reviewing the official Microsoft Learn path for the Azure IoT Developer Specialty. This free online curriculum is specifically tailored to cover all the skills measured in the AZ-220 exam syllabus.
  • Hands-on Labs: Practical experience is essential for an IoT specialty. Engage with Microsoft's official github-based labs and practice deploying IoT Hubs, creating custom Edge modules, routing data, and configuring security features within a trial Azure environment.
  • Official Practice Tests: Utilize the official practice test provided by Microsoft's partner, such as MeasureUp. These tests help you become familiar with the actual exam format, pace your time, and identify technical areas where you need more review.
  • How and Where to Take the Exam: The AZ-220 exam is delivered through Pearson VUE. You can schedule and take the test in one of two ways. You can choose to take an online-proctored exam (OnVUE) from the comfort of your home or office, ensuring you meet the strict environment and technical requirements. Alternatively, you can take the exam in person at a physical Pearson VUE Authorized Test Center located worldwide. You will need to bring government-issued photo ID that matches the name on your registration.

 

 

 Job Opportunities from the Course

Earning the Microsoft Certified: Azure IoT Developer Specialty credential significantly boosts your credibility and opens doors to highly sought-after, technical roles across various industries investing in digital transformation and smart technology. Passing the AZ-220 exam unlocks a direct path to the following career opportunities.

  • Azure IoT Developer
  • IoT Solutions Architect
  • IoT Device Engineer
  • Cloud Developer (IoT Focus)
  • IoT Data Engineer
  • IoT Systems Integrator

 

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