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LINQ interview questions

LINQ interview questions.

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1.

What are the types of LINQ?

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2.

Explain what is LINQ? Why is it required?

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3.

What is LINQ?

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4.

What is LINQ in C#?

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5.

List out the three main components of LINQ?

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6.

What are Anonymous Types?

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7.

What is Anonymous function?

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8.

In LINQ how will you find the index of the element using where() with Lambda Expressions?

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9.

Explain how LINQ is useful than Stored Procedures?

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10.

Explain what is the purpose of LINQ providers in LINQ?

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11.

Explain what is “LINQ to Objects”?

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12.

Explain why SELECT clause comes after FROM clause in LINQ?

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13.

What are Extension Methods?

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14.

Mention what is the role of DataContext classes in LINQ?

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15.

Filter out the first 3 even numbers from the list using LINQ

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16.

Explain what are LINQ compiled queries?

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17.

Could you explian what is the exact deference between deferred execution and Lazy evaluation in C#?

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18.

When to use First() and when to use FirstOrDefault() with LINQ?

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19.

Explain how standard query operators useful in LINQ?

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20.

Define what is Let clause?

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21.

Could you compare Entity Framework vs LINQ to SQL vs ADO.NET with stored procedures?

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22.

Explain what is lambda expressions in LINQ?

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23.

What is the difference between First() and Take(1)?

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24.

What is Expression Trees and how they used in LINQ?

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25.

When trying to decide between using the Entity Framework and LINQ to SQL as an ORM, what's the difference?

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26.

Explain what is the difference between Skip() and SkipWhile() extension method?

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27.

Get the indexes of top n items where item value = true

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28.

Using LINQ to remove elements from a List

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29.

What is an equivalent to the "let" keyword in chained LINQ extension method calls?

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30.

When should I use a CompiledQuery?

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31.

Name some advantages of LINQ over Stored Procedures

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32.

What are the benefits of a Deferred Execution in LINQ?

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33.

What are the benefits of a Deferred Execution in LINQ?

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34.

Name some disadvantages of LINQ over sprocs

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35.

What is the difference between Select and SelectMany?

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36.

Why use .AsEnumerable() rather than casting to IEnumerable?

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37.

What is the difference between returning IQueryable vs. IEnumerable?

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38.

Can you provide a concise distinction between anonymous method and lambda expressions?

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