Explain the concept of "lazy loading" in Entity Framework and its impact on performance.
- Automatic loading of related entities without any explicit request, improves performance
- Deferred loading of related entities until they are specifically requested, can lead to excessive database queries
- Eager loading of all related entities upfront, reducing database round-trips
- Manual loading of related entities using custom queries, enhances control over data retrieval
Lazy loading in Entity Framework refers to the practice of deferring the loading of related entities until they are accessed. While this can lead to excessive database queries if not managed properly, it helps improve performance by only loading the necessary data when needed.
LINQ queries can be performed on various data sources, including collections, arrays, and ___________.
- Databases
- JSON Files
- Web Services
- XML Documents
LINQ allows developers to perform queries not only on collections and arrays but also on XML documents, enabling versatile data manipulation.
How does the use of partitioning in Azure Cosmos DB enhance data access and scalability?
- Enhanced security
- Improved query performance
- Reduced storage costs
- Simplified data modeling
Partitioning in Azure Cosmos DB improves query performance by distributing data across partitions, allowing for parallel processing and efficient data access, leading to enhanced scalability.
In Azure Cognitive Services, the _______ API offers advanced decision-making capabilities based on user inputs and behaviors.
- Cognitive
- Decision
- DecisionAPI
- Personalizer
Azure Cognitive Services' Personalizer API provides advanced decision-making capabilities, leveraging user inputs and behaviors for personalized experiences.
The _______ in Azure Monitor is used for setting up alerts based on metrics or logs.
- Alert Condition
- Alert Policy
- Alert Profile
- Alert Rule
In Azure Monitor, an Alert Policy is used to set up alerts based on specified metrics or logs, enabling proactive monitoring.
In Azure Networking, which service is utilized for optimizing and controlling the distribution of user traffic across global Azure regions?
- Azure Application Gateway
- Azure Content Delivery Network
- Azure Load Balancer
- Azure Traffic Manager
Azure Traffic Manager is used to optimize and control the distribution of user traffic across global Azure regions for improved performance and availability.
Describe the role of Azure Service Fabric in the development and management of large-scale microservices applications.
- Containerization
- Data storage
- Fault tolerance
- Service orchestration
Azure Service Fabric plays a crucial role in large-scale microservices applications by providing service orchestration, enabling seamless communication and coordination between microservices.
_______ in Azure Governance is essential for tracking changes and understanding the state of resources.
- Activity Log
- Blueprint
- Policy
- Resource Lock
The Activity Log in Azure Governance is essential for tracking changes and understanding the state of resources, ensuring effective governance.
Azure Functions supports _______ programming languages for writing serverless functions.
- 10
- 20
- 30
- Multiple
Azure Functions supports multiple programming languages, offering flexibility for developers to choose the language they are comfortable with for writing serverless functions.
In LINQ, what is the primary purpose of the join clause?
- Combine two or more sequences based on a related key
- Filter elements based on a specified condition
- Group elements based on a specified key
- Sort elements in ascending or descending order based on a specified key
The primary purpose of the join clause in LINQ is to combine two or more sequences based on a related key. It allows for creating a combined result set from two or more collections based on a common field or property. This operation is akin to SQL JOIN operation.
In Entity Framework, what is the Entity Data Model (EDM)?
- A conceptual model that describes the structure of data, independent of the underlying database schema.
- A mapping mechanism that connects the database schema to the application's object model.
- A set of database tables that represent the entities in an application.
- A tool for querying databases using LINQ expressions.
The Entity Data Model (EDM) in Entity Framework is a conceptual model that represents the structure of data in an application independently of the database schema. It provides a higher-level abstraction over the database, allowing developers to work with entities and relationships in a more intuitive manner.
The orderby clause is used to ___________ the result set in LINQ to DataSet.
- Filter
- Sort
- Join
- Group
The correct option is 'Sort'. In LINQ to DataSet, the orderby clause is used to sort the result set based on one or more criteria. It allows you to specify the order in which the elements should appear in the result set, such as ascending or descending order.