Bytexus Software Solutions Interview Questions and Answers for Experienced

The sequence of steps a browser takes to convert HTML, CSS, and JavaScript into a rendered page.

• Includes parsing HTML, constructing the DOM tree, calculating styles, and executing JavaScript.

• Optimizing the critical rendering path can improve page load times and user experience.

• Examples of optimization techniques include minimizing render-blocking resources and using lazy loading.

• The critical rendering path can vary dep

Asynchronous in JS means executing code without blocking the main thread.

• Asynchronous code allows other code to run while waiting for a task to complete.

• It is commonly used for network requests, file I/O, and other time-consuming operations.

• Callbacks, Promises, and Async/Await are common ways to handle asynchronous code in JS.

A class in JavaScript is a blueprint for creating objects with similar properties and methods.

• Classes are used to create multiple objects with the same structure and behavior.

• They provide a way to organize and encapsulate related data and functions.

• Classes can have properties (variables) and methods (functions) that define their behavior.

• Instances of a class can be created using the 'new' keyword.

• Classes can also have ...read more

Mobile first design is an approach where the design and development of a website or application starts with the mobile version.

• Designing for smaller screens first

• Prioritizing content and functionality for mobile users

• Adapting the design for larger screens

• Focusing on speed and performance

• Examples: Instagram, Twitter, and Facebook

Service provides data and functionality while Component handles UI and user interaction.

• Service is a singleton object that can be injected into multiple components

• Component is a directive with a template and styles

• Service provides data and functionality to components

• Component handles UI and user interaction

• Services can be used to share data between components

• Components can communicate with services using dependency inj

State variables are best for managing component's internal state, while properties are best for passing data from parent to child components.

• State variables are mutable and can be changed within the component

• Properties are immutable and cannot be changed within the component

• State variables are used to manage the component's internal state

• Properties are used to pass data from parent to child components

• State variables ar...read more

Authentication system in API service must be configured securely to prevent external hacking.

• Use strong encryption algorithms to store passwords

• Implement multi-factor authentication

• Use HTTPS protocol to encrypt data in transit

• Implement rate limiting to prevent brute force attacks

• Regularly update and patch the authentication system

• Use secure coding practices to prevent injection attacks

Clients of one domain can access API service through authentication and authorization managed by API service.

• API service can use OAuth2.0 for authentication and authorization

• Different domains can have different client IDs and secrets for OAuth2.0

• API service can use JWT for token-based authentication

• Cross-Origin Resource Sharing (CORS) can be used to allow access from different domains