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

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Learn LINQ (Language-Integrated Query) in C Sharp MCQ Questions and answers with easy and logical explanations in C# Program. LINQ (Language-Integrated Query) in C Sharp MCQ question provides all type of technical mcq questions which is important for technical exams, campus exams and other entrance examination. Page-3 section-1

What is the purpose of the TakeWhile operator in LINQ?

A) Returns elements from a sequence before a specified condition becomes false B) Returns elements from a sequence after a specified condition becomes true C) Returns elements from a sequence as long as a specified condition is true D) Returns elements from a sequence until a specified condition is true

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Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

In LINQ, what does the All operator do?

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

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Answer & Solution

Answer: Option D

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Which LINQ operator is used to perform a right outer join between two sequences based on matching keys?

A) GroupJoin B) Join C) Except D) Union

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Answer & Solution

Answer: Option A

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What is the purpose of the SkipWhile operator in LINQ?

A) Bypasses a specified number of elements from the start of a sequence B) Bypasses a specified number of elements and then returns the remaining elements C) Bypasses elements in a sequence after a specified condition becomes true D) Bypasses elements in a sequence until a specified condition becomes false

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Answer & Solution

Answer: Option D

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In LINQ, what does the Aggregate operator do?

A) Projects each element of a sequence and flattens the resulting sequences B) Filters a sequence based on a predicate C) Performs a custom aggregation operation on the elements of a sequence D) Orders the elements of a sequence

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Answer & Solution

Answer: Option C

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What is the purpose of the AsEnumerable operator in LINQ?

A) Converts a sequence to a List<T> B) Converts a sequence to an IEnumerable<T> C) Converts a sequence to an Array<T> D) None of the above

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Answer & Solution

Answer: Option B

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Which LINQ operator is used to return elements from the first sequence that are not present in the second sequence?

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

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Answer & Solution

Answer: Option C

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What is the purpose of the Reverse operator in LINQ?

A) Sorts the elements of a sequence in ascending order based on a key B) Filters a sequence based on a predicate C) Projects each element of a sequence D) Reverses the order of the elements in a sequence

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Answer & Solution

Answer: Option D

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In LINQ, what does the ElementAt operator do?

A) Returns the number of elements in a sequence B) Returns the last element of a sequence C) Returns the element at a specified index in a sequence D) Returns the first element of a sequence

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Answer & Solution

Answer: Option C

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Which LINQ operator is used to remove duplicate elements from a sequence?

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

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Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

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