C# Programming — MCQ Practice Questions & Answers

Question 1

A web application needs to store a user preference that persists across multiple browser sessions. Which state management technique is most appropriate?

Accepted Answer

Correct answer: A. Database with user ID — For persistent data across multiple sessions, database storage is the best approach. Session State is temporary and Application State is server-wide.

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B. ViewState

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C. Session State

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D. Application State

Question 2

What is the correct order of Page Lifecycle events in ASP.NET Web Forms?

Accepted Answer

Correct answer: A. Init → Load → EventHandling → Render → Unload — ASP.NET Web Forms lifecycle: Init → Load → Event Handling (ViewState restored) → Render → Unload.

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B. Load → Init → EventHandling → Render → Unload

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C. Init → Load → Render → EventHandling → Unload

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D. Load → Init → Render → EventHandling → Unload

Question 3

An e-commerce application needs to handle concurrent user requests efficiently. Which ASP.NET Core feature is most suitable?

Accepted Answer

Correct answer: A. Async/Await with Task-based operations — Async/Await enables non-blocking I/O operations, allowing ASP.NET Core to handle more concurrent requests efficiently.

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B. Synchronous request processing

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C. Single-threaded execution

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D. Blocking I/O operations

Question 4

In ASP.NET Core, which method is used to register services in the dependency injection container?

Accepted Answer

Correct answer: A. services.AddScoped(), services.AddSingleton(), services.AddTransient() — AddScoped, AddSingleton, and AddTransient are methods to register services with different lifetimes in ASP.NET Core DI.

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B. services.Register()

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C. services.Inject()

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D. services.Configure()

Question 5

A developer needs to create a RESTful API that returns JSON data. Which ASP.NET approach is most suitable?

Accepted Answer

Correct answer: A. ASP.NET Core Web API with [ApiController] — ASP.NET Core Web API with [ApiController] attribute is the modern approach for building RESTful APIs that return JSON.

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B. ASP.NET Web Forms with controls

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C. Classic ASP with VBScript

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D. ASP.NET MVC Views only

C# Programming - MCQ Practice Questions