Scenario: Your application needs to allow users to edit data within the displayed table. Which property or feature would you enable in the chosen control?
- AllowEdit property
- EditMode property
- Editable property
- EditingEnabled property
To enable users to edit data within the displayed table, you would set the EditingEnabled property to true in the chosen control, such as DataGridView. This property allows users to modify cell values directly within the grid, providing a seamless editing experience. By enabling editing functionality, users can make changes to the data without the need for additional forms or dialogs, enhancing the usability of the application.
In ADO.NET, what is the role of the DataRow object when modifying data?
- Represents a single table of data
- Represents a single row of data
- Represents a dataset
- Represents a database connection
The correct option is Represents a single row of data. DataRow object in ADO.NET represents a single row of data within a DataTable. It allows modification, addition, and deletion of data in the DataTable. The other options do not accurately describe the role of a DataRow object.
In ASP.NET, the ___________ event of a DropDownList control is commonly used for postback and data binding.
- SelectedIndexChanged
- DataBound
- Load
- SelectedValueChanged
The correct option is 1. SelectedIndexChanged. This event is commonly used for postback and data binding in ASP.NET when dealing with the DropDownList control. It triggers when the selected item in the DropDownList control changes.
When should you consider using eager loading in Entity Framework to retrieve related data?
- When dealing with complex object graphs
- When memory usage is not a concern
- When there are multiple levels of navigation properties
- When working with small datasets
Eager loading should be considered when dealing with complex object graphs, meaning scenarios where an entity has multiple related entities and navigating through them would lead to multiple database round-trips if lazy loading were used. Eager loading retrieves all related entities in a single query, which can reduce the number of database round-trips and improve performance in such scenarios. This approach is suitable when memory usage is not a significant concern, as it may lead to loading unnecessary data into memory.
To create a parameterized query, you use placeholders in the SQL statement, often denoted by ________.
- dollar signs
- exclamation marks
- percent signs
- question marks
In parameterized queries, placeholders are typically denoted by question marks (?). These question marks serve as positional markers for where the input data should be inserted into the SQL statement. When executing the query, the actual values are bound to these placeholders, ensuring proper sanitation and preventing SQL injection attacks.
The ___________ property of a data-bound control specifies the source of data for binding.
- DataBinding
- DataBindingSource
- DataControlSource
- DataSource
The DataSource property of a data-bound control specifies the source of data for binding, allowing the control to display data retrieved from the specified data source.
Which LINQ operator is used to filter elements in a sequence based on a specified condition?
- GroupBy
- OrderBy
- Select
- Where
The Where operator is used to filter elements in a sequence based on a specified condition. It takes a predicate as an argument and returns a new sequence containing only the elements that satisfy the specified condition. This is commonly used for filtering data in LINQ queries.
What does LINQ stand for in C#?
- Language Integrated Query
- Link Integrated Query
- List Integrated Query
- Logical Integrated Query
LINQ stands for "Language Integrated Query". It allows developers to query various data sources using a syntax similar to SQL.
In complex integrations, Azure Logic Apps uses _______ to define the workflow logic in a JSON format.
- ARM Templates
- Azure Logic Apps API
- Bicep
- Logic Apps Designer
Azure Logic Apps uses Logic Apps Designer to define complex workflow logic in a JSON format, providing a visual and intuitive way to design integrations.
Describe the purpose of Azure ExpressRoute in enhancing network connectivity and performance.
- Azure VPN Gateway
- High-speed internet connection
- Load balancing for web applications
- Private dedicated network connection
Azure ExpressRoute provides a private, dedicated connection between on-premises data centers and Azure, enhancing network connectivity and performance by bypassing the public internet.