Zidio Development Interview Questions and Answers

I hold a degree in Computer Science and have extensive experience in web development, specializing in front-end technologies.

• Bachelor's degree in Computer Science from XYZ University.

• Completed a web development bootcamp focusing on HTML, CSS, and JavaScript.

• Worked on several projects, including an e-commerce site using React and Node.js.

• Certified in responsive web design and accessibility best practices.

I tend to procrastinate and sometimes overthink my work, which can delay project timelines and affect productivity.

• Procrastination: I often delay starting tasks until the last minute, which can lead to rushed work.

• Overthinking: I sometimes get caught up in details, making it hard to move forward on projects.

• Disorganization: My workspace can get cluttered, which affects my focus and efficiency.

• Difficulty in saying ...read more

OOPs (Object-Oriented Programming) is a programming paradigm based on objects and classes, promoting code reusability and organization.

• Encapsulation: Bundling data and methods that operate on the data within one unit, e.g., a class in Java.

• Inheritance: Mechanism where one class inherits properties and behavior from another, e.g., a 'Dog' class inheriting from an 'Animal' class.

• Polymorphism: Ability to present the ...read more

Implementing security in Spring Boot involves configuring authentication, authorization, and securing endpoints.

• Use Spring Security for authentication and authorization.

• Configure WebSecurityConfigurerAdapter to customize security settings.

• Implement user details service to load user-specific data.

• Use JWT (JSON Web Tokens) for stateless authentication.

• Secure REST endpoints with @PreAuthorize or @Secured annotations.

Integrating frontend and backend involves seamless communication, data handling, and user experience optimization.

• Use RESTful APIs for communication between frontend and backend. Example: Fetching user data using GET requests.

• Implement WebSockets for real-time updates. Example: Chat applications where messages are instantly reflected.

• Utilize JSON for data interchange, ensuring both frontend and backend can easily ...read more

Java does not use pointers like C/C++, but it uses references to manage memory and object access.

• Java uses references instead of pointers, which are safer and prevent direct memory access.

• References in Java point to objects in memory, not to the memory addresses themselves.

• Example: In Java, when you assign one object to another, you are copying the reference, not the object itself.

• Java's garbage collection manages...read more

Java is a versatile programming language used for building web applications, mobile apps, and enterprise solutions.

• Web Development: Java is used in server-side applications with frameworks like Spring and JavaServer Faces (JSF).

• Mobile Applications: Java is the primary language for Android app development, enabling the creation of robust mobile applications.

• Enterprise Solutions: Java is widely used in large-scale e...read more

Closures in JavaScript allow functions to retain access to their lexical scope even when executed outside that scope.

• A closure is created when a function is defined inside another function.

• The inner function has access to the outer function's variables.

• Closures can be used to create private variables.

• Example: function outer() { let count = 0; return function inner() { count++; return count; }; }

• In the example, 'in...read more