Q1easy
What is the primary difference between Authentication and Authorization?
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10 Questions Total
Backend Development Fundamentals MCQs
Topic-wise practice questions for Web Development. Test your knowledge, check solutions on demand, and pace your preparation.
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Practice in Timed ModeQ2easy
What is the purpose of an Environment Variable (like DB_PASSWORD)?
Q3medium
In a typical Express.js (Node.js) middleware chain, what happens if you
forget to call the next() function?
server.js
app.use((req, res, next) => {
console.log('Logging request...');
// next() is missing here
});
Q4easy
What is a JWT (JSON Web Token) typically used for in a backend application?
Q5medium
You are using a RESTful API. A user requests DELETE /api/ products/5. What should the server return if the product does not exist?
Q6easy
What is the purpose of CORS (Cross-Origin Resource Sharing) headers?
Q7easy
What is the difference between Synchronous and Asynchronous backend operations?
Q8easy
What is the main purpose of Middleware in a backend web application?
Q9medium
You need to share a database connection across multiple requests to avoid the high cost of creating a new connection every time. What is this optimization called?
Q10medium
You are building a system that requires handling 10,000 concurrent database connections. Why might Node.js be preferred over a traditional synchronous server like a standard PHP configuration?