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web.groovymark@gmail.com
- November 21, 2024
Question 21
In Cosmos DB, what is an “RU” (Request Unit)?
a) A measure of storage capacity
b) A pricing metric for the number of API calls
c) A unit of compute used to handle requests and operations
d) A tool for scaling containers
Correct Answer: c) A unit of compute used to handle requests and operations
Explanation: A Request Unit (RU) in Cosmos DB is a measure of the resources required to process a request, including compute, memory, and I/O.
Question 22
What is the purpose of “containers” in Cosmos DB?
a) To store encrypted backups
b) To partition data for optimized performance and scalability
c) To manage user access to data
d) To handle database migrations
Correct Answer: b) To partition data for optimized performance and scalability
Explanation: Containers in Cosmos DB are used to partition data, ensuring efficient distribution and scalability of the database.
Question 23
In Azure App Service, what is a “deployment slot”?
a) A separate instance of the application used for staging or testing
b) A backup of the app stored in Blob Storage
c) A log of application performance metrics
d) A tool for scaling the application
Correct Answer: a) A separate instance of the application used for staging or testing
Explanation: Deployment slots in Azure App Service allow you to create separate environments for testing or staging, which can be swapped with the production environment.
Question 24
What is the purpose of “Azure Cosmos DB Gremlin API”?
a) To support graph-based data structures and queries
b) To manage document-based data
c) To handle key-value data structures
d) To provide table-based access
Correct Answer: a) To support graph-based data structures and queries
Explanation: The Gremlin API in Cosmos DB is used to work with graph-based data structures, supporting queries for entities and relationships.
Question 25
What is the key benefit of using Azure SignalR Service?
a) Faster database reads
b) Real-time web application communication between server and client
c) Automatic data encryption
d) Improved storage redundancy
Correct Answer: b) Real-time web application communication between server and client
Explanation: Azure SignalR Service allows real-time communication between clients and servers, enabling scenarios like chat applications and live dashboards.
Question 26
In Azure Kubernetes Service (AKS), what does “horizontal scaling” refer to?
a) Increasing the memory and CPU of individual nodes
b) Adding more virtual machines to the node pool
c) Reducing the load on individual containers
d) Replicating data across regions
Correct Answer: b) Adding more virtual machines to the node pool
Explanation: Horizontal scaling in AKS involves adding more virtual machines to the node pool to distribute the load across more resources.
Question 27
In Cosmos DB, what is the recommended consistency level for session-based applications?
a) Strong
b) Bounded Staleness
c) Eventual
d) Session
Correct Answer: d) Session
Explanation: The session consistency level is recommended for applications that require consistency within a user session, providing a good balance between performance and data accuracy.
What is the role of the “GremlinServer” class in Cosmos DB?
a) To handle relational data queries
b) To start interaction with Cosmos DB for graph-based queries
c) To manage database connections for document-based queries
d) To log error messages
Correct Answer: b) To start interaction with Cosmos DB for graph-based queries
Explanation: The GremlinServer class is used to interact with Cosmos DB's Gremlin API, supporting graph-based data queries and operations.
Question 29
In Azure Functions, what does the “retry policy” define?
a) How often a function is triggered
b) The conditions under which a function retries after failure
c) The data sources to be used
d) The maximum execution time for the function
Correct Answer: b) The conditions under which a function retries after failure
Explanation: The retry policy in Azure Functions defines the conditions and parameters under which a function automatically retries after a failure, improving reliability.
Question 30
What is the purpose of “Event Grid” in Azure?
a) To store large datasets
b) To provide a real-time event routing service
c) To manage virtual machines
d) To control network traffic
Correct Answer: b) To provide a real-time event routing service
Explanation: Azure Event Grid provides real-time event routing services, allowing you to send events from sources like Azure Storage to event handlers like Azure Functions.
Question 31
In Azure Logic Apps, what is the function of “triggers”?
a) To schedule workflows
b) To start the execution of a workflow in response to an event
c) To define output parameters
d) To manage application secrets
Correct Answer: b) To start the execution of a workflow in response to an event
Explanation: Triggers in Logic Apps are used to start the execution of workflows when an event occurs, such as receiving an HTTP request or a file upload.
Question 32
What is the role of “Azure Blob Storage lifecycle policies”?
a) To store data backups
b) To automate blob tier transitions based on access patterns
c) To manage encryption keys
d) To monitor storage account usage
Correct Answer: b) To automate blob tier transitions based on access patterns
Explanation: Lifecycle policies in Azure Blob Storage allow you to automate the movement of blobs between access tiers based on access frequency, optimizing storage costs.
Question 33
In Cosmos DB, what is a “lease container”?
a) A backup container
b) A container that stores metadata for managing state across change feed consumers
c) A storage location for encryption keys
d) A tool for managing user access
Correct Answer: b) A container that stores metadata for managing state across change feed consumers
Explanation: A lease container in Cosmos DB stores metadata used by the change feed processor to manage state across multiple consumers, ensuring consistency.
Question 34
What is the purpose of “custom domains” in Azure Blob Storage?
a) To manage storage encryption
b) To provide secure access to storage accounts
c) To use a personalized domain name for accessing blobs
d) To replicate blobs across regions
Correct Answer: c) To use a personalized domain name for accessing blobs
Explanation: Custom domains in Azure Blob Storage allow you to use a personalized domain name to access blob data, improving branding and ease of use.
Question 35
What is the purpose of “Azure App Service Hybrid Connections”?
a) To connect an Azure App Service to an on-premises resource over TCP
b) To encrypt data between services
c) To replicate app instances across regions
d) To store application secrets securely
Correct Answer: a) To connect an Azure App Service to an on-premises resource over TCP
Explanation: Azure App Service Hybrid Connections allows you to connect Azure App Services to on-premises resources, such as databases, over TCP.
Question 36
What is the benefit of using “Azure Application Insights”?
a) To encrypt application data
b) To monitor application performance and diagnose issues
c) To manage storage costs
d) To scale applications automatically
Correct Answer: b) To monitor application performance and diagnose issues
Explanation: Azure Application Insights helps developers monitor their application’s performance, diagnose issues, and optimize user experiences with real-time analytics.
Question 37
In Cosmos DB, what does the “SQL API” allow you to do?
a) Perform SQL-based queries on JSON data
b) Manage table-based data
c) Execute graph-based queries
d) Partition data across regions
Correct Answer: a) Perform SQL-based queries on JSON data
Explanation: The SQL API in Cosmos DB allows developers to perform SQL-like queries on JSON data stored in the database, making it easy to work with structured data.
Question 38
What is the main benefit of using “Azure Functions Premium Plan”?
a) Always-on support and faster cold starts
b) Lower costs for high-frequency executions
c) Easier integration with Azure Event Grid
d) Automatic scaling for low-traffic functions
Correct Answer: a) Always-on support and faster cold starts
Explanation: The Premium Plan for Azure Functions provides always-on support and reduced cold start times, improving the performance of functions with varying traffic.
Question 39
What is “data affinity” in Cosmos DB?
a) The distribution of data across multiple regions
b) The association of related data with the same partition key
c) The encryption of sensitive data
d) The replication of data for high availability
Correct Answer: b) The association of related data with the same partition key
Explanation: Data affinity in Cosmos DB refers to the practice of associating related data with the same partition key to optimize performance and query efficiency.
Question 40
What is the purpose of an “authorization header” in Azure Blob Storage?
a) To encrypt blob data
b) To control access to blobs using authentication tokens
c) To replicate blobs across regions
d) To enable faster data retrieval
Correct Answer: b) To control access to blobs using authentication tokens
Explanation: The authorization header in Azure Blob Storage ensures that only authenticated users can access blobs, providing a secure method for controlling access.
