Summary of Backend Interview Questions And Answers | Backend Web Developer Interview Questions | Simplilearn

Main Ideas and Concepts

• Introduction to Backend Development

  Backend development involves server-side web application logic, writing APIs, and creating libraries. There is a high demand for backend developers.

• Technologies Covered

  The video addresses interview questions related to several key backend technologies:

  • Node.js
  • PHP
  • SQL (Database Management Systems)
  • Docker
  • Jenkins
  • Maven
  • Selenium
• Node.js Interview Questions
  • Basic understanding of Node.js, its purpose, and how it works.
  • Differences between front-end and back-end development.
  • Explanation of npm (Node Package Manager) and its functionalities.
  • Differences between Node.js and other backend technologies (e.g., Java, PHP).
  • Understanding of modules in Node.js and the importance of asynchronous programming.
• PHP Interview Questions
  • Basic PHP concepts, including sessions, data types, and frameworks.
  • Differences between echo and print, variable naming rules, and object passing.
  • Advanced PHP concepts like inheritance, loops, and error handling.
• SQL Interview Questions
  • Key SQL concepts, including the difference between WHERE and HAVING clauses, and the use of DISTINCT.
  • Practical SQL queries to find unique values, lowest salaries, and more.
• Docker and Jenkins Interview Questions
  • Overview of Docker architecture, advantages over virtual machines, and how to share containers.
  • Jenkins architecture, types of pipelines, and how to manage builds.
• Selenium Interview Questions
  • Selenium components, limitations, and types of locators.
  • Handling pop-ups, taking screenshots, and using JavaScript for automation.

Methodology or Instructions Presented

• Node.js
  • Understand the structure and functionality of Node.js.
  • Familiarize with npm and its role in package management.
• PHP
  • Learn key PHP functions and frameworks.
  • Understand object-oriented concepts and error handling.
• SQL
  • Practice writing SQL queries for data retrieval and manipulation.
  • Understand the differences between various SQL clauses.
• Docker
  • Learn how to create and manage Docker containers.
  • Understand the difference between images and containers.
• Jenkins
  • Understand the Jenkins architecture and how to set up CI/CD pipelines.
  • Familiarize with job scheduling and build management.
• Selenium
  • Learn how to use Selenium for web automation, including handling different types of web elements.
  • Understand the importance of waits and how to handle dynamic content.

Speakers or Sources Featured

The video features a narrator (not explicitly named) from Simplilearn, who guides viewers through various backend technologies and related interview questions.

Notable Quotes

— 03:02 — « Dog treats are the greatest invention ever. »

Category

Educational

Video