LINQ (Language-Integrated Query) in C Sharp MCQ question and answer with solution

1

What does LINQ stand for in C#?

A) Lightweight Query B) Linked Query C) Language-Integrated Query D) Loaded Query

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Answer & Solution

Answer: Option C

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2

Which namespace in C# provides the LINQ extension methods?

A) System.Query B) System.Linq C) System.Data D) None of the above

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Answer & Solution

Answer: Option B

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3

What is the purpose of the Select operator in LINQ?

A) Groups the elements of a sequence B) Orders the elements of a sequence C) Projects each element of a sequence D) Filters a sequence based on a predicate

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Answer & Solution

Answer: Option C

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4

In LINQ, what is the purpose of the Where operator?

A) Projects each element of a sequence B) Orders the elements of a sequence C) Groups the elements of a sequence D) Filters a sequence based on a predicate

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Answer & Solution

Answer: Option D

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5

What is the return type of a LINQ query expression?

A) IEnumerable B) IQueryable C) List D) Array

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Answer & Solution

Answer: Option A

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6

Which LINQ operator is used to sort the elements of a sequence in ascending order based on a key?

A) ThenByDescending B) ThenBy C) OrderByDescending D) OrderBy

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Answer & Solution

Answer: Option D

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7

In LINQ, what does the First operator do?

A) Returns the last element of a sequence B) Returns the number of elements in a sequence C) Returns the first element of a sequence D) Returns a specific element from a sequence

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Answer & Solution

Answer: Option C

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8

What is the purpose of the OrderByDescending operator in LINQ?

A) Filters a sequence based on a predicate B) Sorts the elements of a sequence in descending order based on a key C) Projects each element of a sequence D) None of the above

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Answer & Solution

Answer: Option B

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9

In LINQ, what does the Any operator do?

A) Returns a specific element from a sequence B) Returns the number of elements in a sequence C) Determines whether any element exists in a sequence that satisfies a condition D) Determines whether all elements in a sequence satisfy a condition

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Answer & Solution

Answer: Option C

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10

Which LINQ operator is used to concatenate two sequences?

A) Union B) Intersect C) Except D) Concat

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Answer & Solution

Answer: Option D

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LINQ (Language-Integrated Query) in C Sharp MCQ question and answer with solution | C# Program MCQs