Microsoft Certified Solutions Developer (MCSD) Certification Practice Test

When filtering with LINQ, what will the Where clause return?

1. A sorted list of elements.

2. A collection of items that meet specified criteria.

3. A singular object that meets specified conditions.

4. A boolean value indicating if the condition is met.

The correct answer is: A collection of items that meet specified criteria.

The Where clause in LINQ is specifically designed to filter a collection based on specific criteria provided through a predicate. When you apply the Where clause, it iterates over the original collection and returns a new collection containing only those elements that satisfy the given condition. This new collection can have zero or more elements, depending on how many meet the criteria. Therefore, the outcome is a collection of items that fulfill the condition you are interested in, making the chosen answer accurate in the context of LINQ operations. The other options don't align with the functionality of the Where clause: sorting of elements is not a feature of the Where clause, which is why the first option is incorrect. The third option suggests that it returns a singular object, which is misleading since the Where clause returns a collection, not just a single item. Lastly, a boolean value would imply checking a condition rather than filtering, thus making the fourth option also inaccurate.