NeoSOFT Interview Questions, Process, and Tips for Experienced

Q1. WHat is usememo use effect
Ans. 
useMemo and useEffect are hooks in React used for optimizing performance and managing side effects respectively.
• useMemo is used to memoize the result of a function and cache it for future use.

• useEffect is used to perform side effects like fetching data, subscribing to events, or updating the DOM.

• useMemo is used when you want to optimize expensive calculations or avoid unnecessary re-rendering.

• useEffect is used when you...read more
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Q2. How node handels concurrency
Ans. 
Node.js uses an event-driven, non-blocking I/O model to handle concurrency.
• Node.js uses an event loop to handle multiple requests concurrently.

• It employs a single-threaded event loop that can handle thousands of concurrent connections.

• Node.js uses non-blocking I/O operations, allowing it to efficiently handle multiple requests without blocking the execution of other code.

• It utilizes callbacks and event emitters to hand...read more
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Q1. String and String Builder, Solid Principles, Java Concurrency, Collection Framework, OOPs concepts. Spring Framework Basics including IOC container, Dependency Injection, Spring Annotations, Circular Depen...read more
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String related questions, Java 8 related questions.

Q1. Basic of react, html, css
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Write code to check palindrome no. Sime basic react js task

Q1. What is api in laravel how to
Ans. 
API in Laravel is a set of routes and controllers that allows communication between different software applications.
• API in Laravel allows developers to define routes and controllers to handle incoming requests and return responses.

• It helps in creating a standardized way for different applications to interact with each other.

• APIs in Laravel can be used for tasks like fetching data from a database, updating records, or p...read more
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Q2. Diff btw print and echo
Ans. 
Print and echo are both used to output data in PHP, but echo is slightly faster and can output multiple values at once.
• Echo is slightly faster than print as it does not return a value

• Echo can output multiple values at once without using concatenation

• Print always returns a value (1) and can be used in expressions
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Q1. What is middleware?
Ans. 
Middleware is software that acts as a bridge between different applications or components, facilitating communication and data exchange.
• Middleware enables interoperability between different software systems.

• It provides a layer of abstraction, allowing applications to communicate without needing to understand the underlying details.

• Examples of middleware include message queues, web servers, and API gateways.
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Q2. What is Exception Handling?
Ans. 
Exception handling is a mechanism to handle and recover from errors or exceptional situations that occur during program execution.
• Exception handling allows programmers to gracefully handle errors and prevent program crashes.

• It involves the use of try-catch blocks to catch and handle exceptions.

• Exceptions can be thrown manually using the throw keyword.

• Common exception types include NullPointerException, ArrayIndexOutOfB...read more
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Q1. What is dependency injection?
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Q2. What is OOP concept?
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