Скачать или смотреть Back End Developer Interview Questions and Answers

In this video Faisal Nadeem shared 9 most important back end developer interview questions and answers.

Q1) What does a backend developer do?
Answer: A backend developer builds and maintains the server-side logic, databases, and APIs that power the front end of applications.

Q2) What are some popular backend programming languages?
Answer: Common ones include Python, Java, Node.js (JavaScript), PHP, Ruby, and C#.

Q3) What is REST API?
Answer: REST API is an architectural style that uses HTTP methods for communication between client and server, enabling CRUD operations on resources.

Q4) What is the difference between SQL and NoSQL databases?
Answer: SQL databases are relational and use structured schemas, while NoSQL databases are non-relational and handle unstructured or semi-structured data.

Q5) What is server-side rendering?
Answer: Server-side rendering generates the full HTML page on the server before sending it to the client, improving SEO & initial load time.

Q6) How do you ensure secure communication b/w client and server?
Answer: By using HTTPS, validating input, using authentication methods like OAuth or JWT, and protecting against attacks like SQL injection and XSS.

Q7) What is middleware in backend development?
Answer: Middleware functions process requests between the client and the final request handler, often used for logging, authentication, or request parsing.

Q8) How do you optimize backend performance?
Answer: Through database indexing, caching (Redis, Memcached), asynchronous processing, load balancing, and efficient query design.

Q9) What is the difference between synchronous and asynchronous programming?
Answer: Synchronous programming executes tasks one at a time, while asynchronous programming allows tasks to run independently, improving performance.


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