Explore key concepts of the .NET Full Stack Developer role with questions covering C#, ASP.NET Core, Entity Framework, JavaScript, SQL Server, and modern web technologies. This quiz is designed to help candidates assess their understanding of both frontend and backend skills required for .NET Full Stack development interviews.
Which C# data type should you use to store a number with decimal points, such as 3.14?
Explanation: The 'float' data type in C# is used to store numbers with decimal points, like 3.14 or 2.5. 'int' only stores whole numbers, so it is not suitable for decimals. 'char' stores a single character, and 'bool' stores either true or false values. Choosing 'float' allows for fractional values, which is essential for representing real numbers.
In an ASP.NET Core MVC project, which folder typically contains the files responsible for defining the user interface layout?
Explanation: The 'Views' folder in ASP.NET Core MVC projects holds the files that define the user interface and layout, usually using Razor syntax. 'Controllers' handle user requests and application logic, 'Models' define data structures, and 'Scripts' typically contain JavaScript files, not layout markup. Therefore, 'Views' is the correct choice for UI layouts.
What is the main purpose of using Entity Framework in .NET applications?
Explanation: Entity Framework is an ORM (Object-Relational Mapper) that allows developers to interact with databases using .NET objects, making data access simpler and more intuitive. It does not compile code or manage user authentication, and it is not related to styling web pages. The essence of Entity Framework is efficient database operations through objects.
Which of the following is commonly used as a frontend framework with .NET for building single-page applications?
Explanation: Angular is a popular frontend framework that is frequently used with .NET to build interactive single-page applications (SPAs). MySQL is a database, Python is a programming language, and ADO.NET is a data access technology. Only Angular fits the role of a frontend framework in this context.
Which language do you use to write queries for retrieving or updating data in a SQL Server database?
Explanation: SQL (Structured Query Language) is the standard language for querying and managing databases like SQL Server. HTML and CSS are used for web page structure and styling, while JavaScript is used for client-side scripting. Only SQL is designed specifically for working with databases to retrieve or modify data.
What is the primary role of HTML in building .NET full stack web applications?
Explanation: HTML is responsible for providing the structure of web pages by defining elements like headings, paragraphs, forms, and tables. It does not define database tables, which is handled by SQL. Styling is managed by CSS, and server logic is handled by backend technologies such as C# or ASP.NET Core.
Which task is best handled by JavaScript in a .NET full stack project example?
Explanation: JavaScript is mainly used on the frontend to create interactive features like buttons that respond to user actions. Creating database indexes and writing stored procedures are performed on the database side, while configuring server ports is a server-side task. JavaScript enables dynamic content and improves the user experience on web pages.
Why would a .NET developer use CSS in their web application project?
Explanation: CSS (Cascading Style Sheets) is used for styling and designing the look of web pages by defining colors, fonts, layout, and other visual aspects. It cannot connect to databases, authenticate users, or compile C# code. Its primary function is to ensure web pages appear visually appealing and consistent.
What is the primary function of ADO.NET in a .NET application?
Explanation: ADO.NET is a data access technology used to interact with databases, retrieve records, and execute database commands in .NET applications. It does not organize CSS, create frontend animations, or solely handle HTTP requests. Its main role is connecting applications to databases for data manipulation.
How does Azure DevOps commonly assist .NET developers in their workflow?
Explanation: Azure DevOps is used to automate the build, test, and deployment of .NET applications, streamlining the software development lifecycle. It does not directly make web pages load faster, manage image compression, or generate frontend HTML code. The automation of deployment processes is one of its main advantages for teams.