LINQ C#

What does LINQ stand for?

• Language Integrated Query

• Language In Query

• Logic Integrated Query

• Language Interface Query

Which of the following best describes LINQ?

• A method to access only SQL databases

• A technology to query and manipulate in-memory collections and data sources

• A tool used exclusively for web development

• A query language used for network communication

Which framework version introduced LINQ in C#?

• .NET 2.0

• .NET 3.5

• .NET 4.0

• .NET 5.0

Which of the following types of data sources can be queried using LINQ?

• XML files

• Relational databases

• In-memory collections

• All of the above

What does LINQ to Objects refer to?

• Applying LINQ queries to object-oriented designs

• Applying LINQ queries to in-memory objects like arrays and collections

• Using LINQ to query web services

• Querying relational databases using object models

Which interface must a data source implement to be used with LINQ?

• ICollection

• IEnumerable

• IList

• IDictionary

Which method is commonly used to execute a LINQ query immediately?

• ToArray()

• Select()

• Where()

• FirstOrDefault()

Which of the following LINQ query keywords is used to filter data based on conditions?

• orderby

• select

• where

• join

What is deferred execution in LINQ?

• LINQ queries are executed as soon as they are defined

• LINQ queries are not executed until the results are iterated over

• LINQ queries are cached and reused

• LINQ queries are executed in a random order

Which LINQ method allows sorting the results in ascending or descending order?

• Select()

• OrderBy()

• GroupBy()

• Where()