Webware.io Interview Questions and Answers

2 coding questions 1 easy ,1 hard , 20 MCQ question and 1 SQL question

Q1. Asked questions of coding round
Add your answer
Q2. Questions about project ,jwt architecture,nextjs vs react
Add your answer

Q1. 2 SQL query using group by
Add your answer
Q2. Question about projects and cs fundamentals
Add your answer

Q1. Basic details around experience
Add your answer

Q1. Basic details and system design
Add your answer

Q1. Coding for a solution
Add your answer

Q1. What are statics functions in OOPS
Ans. 
Static functions in OOP are functions that belong to the class itself, rather than to instances of the class.
• Static functions can be called without creating an instance of the class.

• They are commonly used for utility functions that do not require access to instance-specific data.

• Static functions are declared using the 'static' keyword in many programming languages.

• Example: In Java, a static function in a class can be c
Answered by AI
Add your answer
Q2. What is Polymorphism in OOPs
Ans. 
Polymorphism in OOPs allows objects of different classes to be treated as objects of a common superclass.
• Polymorphism allows methods to be called on objects of different classes that all inherit from a common superclass.

• It enables a single interface to be used for different data types or classes.

• Examples include method overriding in inheritance and method overloading within the same class.
Answered by AI
Add your answer
Q3. What is websockets and its alternative
Ans. 
Websockets are a communication protocol that allows for full-duplex communication between a client and a server over a single, long-lived connection.
• Websockets provide real-time, bi-directional communication between a client and a server.

• They are commonly used in applications that require instant updates, such as chat applications, online gaming, and financial trading platforms.

• Websockets use a persistent connection, u...read more
Answered by AI
Add your answer
Q4. What is JWT and How it works
Ans. 
JWT stands for JSON Web Token, a compact and self-contained way for securely transmitting information between parties as a JSON object.
• JWT is composed of three parts: header, payload, and signature.

• Header typically consists of the type of token and the hashing algorithm being used.

• Payload contains the claims, which are statements about an entity and additional data.

• Signature is created by encoding the header, payload, ...read more
Answered by AI
Add your answer

Q1. Program for a palindrome Number.
Ans. 
Program to check if a number is a palindrome.
• Convert the number to a string to easily check for palindrome

• Reverse the string and compare it with the original string

• If they are the same, the number is a palindrome
Answered by AI
Add your answer
Q2. React Lifecycle methods
Add your answer
Q3. Hooks in react?
Ans. 
Hooks are a feature in React that allow you to use state and other React features in functional components.
• Hooks were introduced in React 16.8.

• They allow you to use state and other React features without writing a class.

• Commonly used hooks include useState, useEffect, useContext, and useReducer.

• Hooks must be used at the top level of your functional component.

• Example: const [count, setCount] = useState(0);
Answered by AI
Add your answer

Q1. Create a High-level design
Ans. 
Design a high-level architecture for a software system
• Identify the main components of the system

• Define the interactions between the components

• Consider scalability, security, and performance

• Choose appropriate technologies and frameworks

• Create a diagram to visualize the architecture
Answered by AI
Add your answer
Q2. Questions on the design you created
Add your answer

Q1. Delete nth node from end in linked list
Ans. 
To delete the nth node from the end in a linked list, we can use a two-pointer approach.
• Use two pointers, one to traverse the list and another to keep track of the nth node from the end.

• Move the second pointer n steps ahead of the first pointer.

• When the second pointer reaches the end of the list, the first pointer will be at the nth node from the end.

• Adjust the pointers to delete the nth node.
Answered by AI
Add your answer
Q2. Project discussion
Add your answer