Add office photos
Employer?
Claim Account for FREE

Mad Street Den

3.6
based on 46 Reviews
Filter interviews by

Cintra Software and Services Interview Questions and Answers

Updated 6 Feb 2024

Q1. What are the different component lifecycles in react

Ans.

React has several component lifecycles, including mounting, updating, and unmounting.

  • Mounting: when a component is being created and inserted into the DOM

  • Updating: when a component is being re-rendered due to changes in props or state

  • Unmounting: when a component is being removed from the DOM

Add your answer

Q2. What are the different CSS position properties

Ans.

CSS position properties determine how an element is positioned on a web page.

  • static: default position, elements flow in document order

  • relative: positioned relative to its normal position

  • absolute: positioned relative to its nearest positioned ancestor

  • fixed: positioned relative to the browser window

  • sticky: positioned based on scroll position

Add your answer

Q3. How will improve the api latency of a system

Ans.

To improve API latency, optimize database queries, use caching, implement load balancing, and optimize code.

  • Optimize database queries by using indexes, reducing unnecessary joins, and optimizing query execution plans.

  • Implement caching to store frequently accessed data in memory, reducing the need for repeated database queries.

  • Use load balancing to distribute incoming requests across multiple servers, preventing any single server from becoming overwhelmed.

  • Optimize code by iden...read more

Add your answer

Q4. What is the use of ref in react

Ans.

Ref is used in React to access and manipulate the DOM directly.

  • Ref provides a way to access and modify DOM elements or React components.

  • It is commonly used for focusing input fields, triggering animations, or integrating with third-party libraries.

  • Ref can be created using the useRef() hook or by using the ref attribute in class components.

  • Example: const inputRef = useRef();

  • Example: const buttonRef = React.createRef();

Add your answer
Discover Cintra Software and Services interview dos and don'ts from real experiences

Q5. How will you improve the db performanc

Ans.

To improve db performance, optimize queries, use indexing, cache data, and scale horizontally.

  • Optimize queries by using appropriate indexes and avoiding unnecessary joins

  • Cache frequently accessed data to reduce database load

  • Scale horizontally by distributing the database across multiple servers

  • Use database monitoring tools to identify and resolve performance bottlenecks

Add your answer

Q6. What is CDN and list its uses

Ans.

CDN stands for Content Delivery Network. It is a distributed network of servers that helps deliver web content efficiently.

  • CDN improves website performance by caching content closer to the user

  • It reduces latency and improves page load times

  • CDN helps handle high traffic loads and prevents server overload

  • It provides global coverage and ensures content availability worldwide

  • CDN can deliver various types of content like images, videos, scripts, etc.

  • Popular CDN providers include C...read more

Add your answer

Q7. How JS handles hoisting

Ans.

JS hoisting is a mechanism where variable and function declarations are moved to the top of their scope during compilation.

  • Variable declarations are hoisted but not their initializations.

  • Function declarations are fully hoisted, including their definitions.

  • Hoisting can lead to unexpected behavior if not understood properly.

  • Example: console.log(x); var x = 5; // Output: undefined

Add your answer

Q8. What is closure

Ans.

Closure is a feature in programming languages that allows a function to access variables from its outer scope even after it has finished executing.

  • Closure is created when a nested function references variables from its parent function.

  • It allows for data encapsulation and privacy in JavaScript.

  • Closures are commonly used in event handlers, callbacks, and asynchronous programming.

  • They can be used to create private variables and functions in object-oriented programming.

  • Closures c...read more

Add your answer

Q9. Design the DB for slack

Ans.

Designing the database for Slack

  • Create tables for users, channels, messages, and teams

  • Use foreign keys to establish relationships between tables

  • Include columns for user details, channel details, message content, and timestamps

  • Consider indexing frequently queried columns for performance optimization

Add your answer
Contribute & help others!
Write a review
Share interview
Contribute salary
Add office photos

Interview Process at Cintra Software and Services

based on 1 interviews
Interview experience
4.0
Good
View more
Interview Tips & Stories
Ace your next interview with expert advice and inspiring stories

Top Full Stack Developer Interview Questions from Similar Companies

3.7
 • 20 Interview Questions
3.7
 • 18 Interview Questions
3.5
 • 17 Interview Questions
4.0
 • 15 Interview Questions
4.8
 • 14 Interview Questions
4.3
 • 13 Interview Questions
View all
Share an Interview
Stay ahead in your career. Get AmbitionBox app
qr-code
Helping over 1 Crore job seekers every month in choosing their right fit company
75 Lakh+

Reviews

5 Lakh+

Interviews

4 Crore+

Salaries

1 Cr+

Users/Month

Contribute to help millions

Made with ❤️ in India. Trademarks belong to their respective owners. All rights reserved © 2024 Info Edge (India) Ltd.

Follow us
  • Youtube
  • Instagram
  • LinkedIn
  • Facebook
  • Twitter