MCSD MCSD 5

Question 1

In C#, which collection type provides O(1) average-time complexity for lookup operations using key-value pairs?

Accepted Answer

Dictionary<TKey, TValue>

Answer

Dictionary<TKey, TValue> uses a hash table internally, providing O(1) average-case performance for get and set operations.

Question 2

Which Azure DevOps feature provides a kanban-style board for tracking work items and sprint planning?

Accepted Answer

Azure Boards

Answer

Azure Boards provides agile planning tools including Kanban boards, backlogs, and sprint planning for tracking work items.

Question 3

What does the 'sealed' keyword prevent when applied to a C# class?

Accepted Answer

Other classes from inheriting from it

Answer

The 'sealed' modifier prevents other classes from deriving from the marked class, effectively closing the inheritance chain.

Question 4

In a RESTful API, which HTTP method is idempotent and should be used to fully replace an existing resource?

Accepted Answer

PUT

Answer

PUT is idempotent and replaces the entire resource at the specified URI with the provided representation.

Question 5

In Entity Framework Code First, what attribute specifies that a property is the primary key of the entity?

Accepted Answer

[Key]

Answer

The [Key] attribute designates a property as the primary key of the entity in Entity Framework Code First conventions.

MCSD Exam Practice Test