Azure Developer Associate (D306)

Correct Answer

A. config-store-001

Explanation

A valid naming convention for an Azure App Configuration Store typically follows a format that includes hyphens for separation and is descriptive. The name "config-store-001" is valid because it adheres to Azure's naming requirements, which allow alphanumeric characters, hyphens, and numbers, and ensure it is clear and descriptive.

Why other options are wrong

B. appconfig123

This name does not include hyphens for separation, which is generally recommended for readability in Azure naming conventions.

C. configuration-store-123

Although this name follows a valid format, it is slightly more verbose than necessary compared to "config-store-001," which is simpler and meets the naming guidelines effectively.

D. storeConfig_1

Azure naming conventions do not typically support underscores in resource names, so "storeConfig_1" would not be a valid naming convention.

Correct Answer

B. Create Products that include the desired APIs and set usage limits for each Product.

Explanation

Azure API Management allows the creation of Products, which bundle together one or more APIs. By configuring Products, the company can manage access, apply usage limits, and set different policies for different partners. This feature enables the exposure of multiple APIs while ensuring control over their usage and enforcing restrictions such as rate limiting or quota management. Products provide a structured way to offer APIs to different consumer groups with varied access controls.

Why other options are wrong

A. Implement Policies to restrict access based on IP addresses.

While policies can be implemented in Azure API Management to control access based on IP addresses, it does not address the full need of managing multiple APIs with usage limits for partners. Policies are useful for fine-tuning access controls, but Products offer a more comprehensive solution for managing and organizing APIs for partner access.

C. Use Groups to categorize APIs without any access restrictions.

Groups in Azure API Management are used to organize users, not to manage access to APIs. Categorizing APIs without any access restrictions does not provide the control required to manage access and usage effectively.

D. Deploy Azure Functions to handle API requests dynamically.

Azure Functions can handle dynamic API requests but are not specifically designed for managing and exposing multiple APIs with controlled access and usage. API Management is the more appropriate tool for this scenario as it provides a complete solution for API access control and management.

Correct Answer

B. To deploy and manage virtual machines

Explanation

The Microsoft.Compute resource provider is used to deploy and manage compute-related resources in Azure, such as virtual machines (VMs), virtual machine scale sets, and other computing resources. It is specifically responsible for managing the lifecycle of virtual machines and compute resources in ARM templates.

Why other options are wrong

A. To manage network resources

Network resources are managed by the Microsoft.Network resource provider, not Microsoft.Compute.

C. To handle storage accounts

Storage accounts are handled by the Microsoft.Storage resource provider, not Microsoft.Compute.

D. To configure web applications

Web applications are managed through the Microsoft.Web resource provider, which is responsible for Azure App Services and other web-related resources, not Microsoft.Compute.

Correct Answer

B. Postman and Microsoft Graph Explorer

Explanation

For testing a new API endpoint for an Azure Function that retrieves user data from Office 365, Postman is a popular tool used for testing HTTP-based APIs, enabling the developer to send requests, validate responses, and inspect headers, body, and status codes. Microsoft Graph Explorer is a tool specifically designed to interact with the Microsoft Graph API, which is the most common way to retrieve Office 365 data programmatically. It allows developers to run queries, test endpoints, and explore the data available from Office 365.

Why other options are wrong

A. Azure Resource Explorer and Fiddler

While Azure Resource Explorer is useful for exploring Azure resources and configurations, it does not focus on API testing for Office 365. Fiddler is a web debugging tool that could be useful for monitoring network traffic, but it is not designed specifically for testing API endpoints like Postman or Microsoft Graph Explorer.

C. Accessibility Settings and Azure Functions

Accessibility Settings are related to UI accessibility and not directly relevant to testing API endpoints. Azure Functions is the platform that runs the code, but this option does not provide the tools needed to test APIs.

D. Azure Cosmos DB and Accessibility Policy

Azure Cosmos DB is a database service and not relevant for testing an API endpoint that retrieves user data from Office 365. Accessibility Policy pertains to application accessibility rules and is not related to API endpoint testing.

Correct Answer

C. JSON

Explanation

Azure Resource Manager (ARM) templates are written in JSON (JavaScript Object Notation). JSON provides a lightweight, structured, and human-readable format that defines the infrastructure and configuration for Azure deployments. ARM templates describe resources and their properties, dependencies, and configurations in a declarative way, making them ideal for infrastructure-as-code scenarios.

Why other options are wrong

A. XML

While XML has been used in older Microsoft technologies, ARM templates do not use XML. JSON is the standard for Azure Resource Manager.

B. YAML

Although YAML is used in Azure Bicep and some DevOps pipelines, ARM templates specifically use JSON.

D. HTML

HTML is used for web page structure and presentation, not for defining infrastructure in Azure.

E. CSV

CSV is used for tabular data, not for complex infrastructure definitions or configurations.

Correct Answer

B. To represent the approved authorization granted to the client

Explanation

In the OAuth framework, the access token serves as a representation of the authorization granted by the resource owner to the client application. It allows the client to access protected resources on behalf of the resource owner, typically by being sent with requests to the resource server. The access token does not itself request authorization; it is proof that the authorization has already been granted. The token is used to authenticate the client for specific API calls.

Why other options are wrong

A. To request authorization from the resource owner

Authorization is actually requested before the access token is issued. The client typically goes through an authorization process where the resource owner grants permission. The access token is issued afterward, not to request authorization.

C. To refresh the expired access token

The refresh token is the component used to obtain a new access token when the original one expires. The access token itself does not have this functionality.

D. To provide a secure method for client authentication

While the access token helps authenticate the client with the resource server, its main function is to authorize the client to access specific resources. The secure authentication of the client is typically handled by other mechanisms, such as the use of client credentials or the authentication process during token issuance.

Correct Answer

A. Lease Blob

Explanation

The Lease Blob operation is used to establish and manage a lock on a blob for exclusive write and delete access. When a lease is active, only the lease holder can modify or delete the blob. This is useful for scenarios where concurrency control is important, such as preventing multiple processes from writing to the same blob at the same time.

Why other options are wrong

B. Set Blob Immutability Policy

This is used to make a blob immutable (i.e., read-only for a specified period), not for enabling exclusive access. It prevents deletion or modification altogether.

C. Snapshot Blob

Creating a snapshot captures the blob’s state at a point in time, but it does not restrict access or provide exclusive write/delete rights.

D. Set Blob Properties

This modifies metadata or properties of the blob but does not establish any lock or exclusive access mechanism.

Correct Answer

D. must be rehydrated before the data can be accessed.

Explanation

Data stored in the Archive tier is optimized for long-term storage and is not immediately available for access. To read or modify this data, it must first be rehydrated—that is, moved to either the Hot or Cool access tier. This rehydration process can take several hours depending on the file size and workload.

Why other options are wrong

A. can be accessed at any time by using azcopy.exe

AzCopy is a tool for data transfer, but it cannot bypass the Archive tier's limitation. Data in the Archive tier is not immediately accessible by any tool until it is rehydrated.

B. can only be read by using Azure Backup

Azure Backup is a separate service and not a requirement for accessing data in the Archive tier. It does not unlock archive data access.

C. must be restored before the data can be accessed

“Restored” is a vague term in this context. The correct terminology is rehydrated, which is specific to Azure Storage access tiers and better describes the required process.

Correct Answer

B. Operation

Explanation

The rate-limiting policy that affects a specific operation within an API in Azure API Management should be applied at the Operation scope level. This allows the developer to target a particular API operation and apply rate-limiting restrictions to it, rather than affecting the entire API or other levels.

Why other options are wrong

A. Global

A global policy affects all operations and APIs within the Azure API Management instance. This would not be suitable for limiting only one specific operation.

C. Subscription

The subscription scope would affect all operations for a specific subscription, which is not ideal if the rate-limiting policy is meant to be applied only to a single operation.

D. Product

A product scope affects all APIs associated with that product. While this could impact multiple operations, it is not as precise as applying the policy at the operation level, where it is targeted to a specific API operation.