1.
What is WebSockets?
Sign in to unlock
Get unlimited access to all questions and answers
Get lifetime access
Track progress
Save time
đź‘‹
Hi! Please sign in to edit.
You will receive an email notification when your contribution is accepted.
The fastest way to prepare
for a tech interview
Check our curated list of full-stack, data structures & software architecture interview questions and answers for developers
Web & Mobile dev Web & Mobile dev
Data structures & Algorithms Data structures
Software Architecture Design patterns
ADO.NET
Android
Angular AngularJS ASP.NET ASP.NET MVC ASP.NET Web API
C#
CSS
DevOps
Entity Framework
Flutter
Git
Golang
GraphQL
HTML5
Ionic
Java
JavaScript
jQuery
Kotlin
Laravel
LINQ
MongoDB .NET Core
Node.js
OOP
PHP
PWA
Python
React
React Native
Reactive Programming
Redis
Redux
Ruby
Ruby on Rails
Testing
Spring
SQL
T-SQL
TypeScript
UX Design
Vue.js
WCF
Web Security
WebSockets
Xamarin WebSockets interview questions.
Only challenges
- 2.
Why use WebSocket over Http?
Answer:
- 3.
What do you mean by lower latency interaction?
Answer:
- 4.
What is Short polling and what problems do we have with it?
Answer:
- 5.
Explain what is Server-Sent Events (SSE) / EventSource?
Answer:
- 6.
Name and explain what different communication techniques on the web do you know?
Answer:
- 7.
What is the difference between WebSockets vs. Server-Sent events/EventSource?
Answer:
- 8.
Explain key features of Socket.io
Answer:
- 9.
Mention some advantages of SSE over Websockets
Answer:
- 10.
Explain what is Long Polling?
Answer:
- 11.
WebSockets vs Rest API for real time data? Which to choose?
Answer:
- 12.
When to use WebRTC over WebSockets?
Answer:
- 13.
What is Sec-WebSocket-Key for?
Answer:
- 14.
What are the differences between Socket.io and WebSockets?
Answer:
- 15.
Why would you choose Server-Sent Events over WebSockets?
Answer:
- 16.
Explain how does WebSockets protocol work under the hood
Answer:
- 17.
What is WebSockets Frame?
Answer:
- 18.
Would WebSockets be able to handle 1,000,000 concurrent connections?
Answer:
- 19.
Can you suggest how to load balance Web Sockets?
Answer:
- 20.
How would you secure WebSockets communication on your project?
Answer:
- 21.
What is the mask in a WebSocket frame?
Answer:
- 22.
What is the fundamental difference between WebSockets and pure TCP?
Answer:
- 23.
Explain why CDN (in)availability may be a problem for using WebSockets?
Answer:
- 24.
How to use CHAP Authentication (Challenge Response Authentication) for webSockets?
Answer:
- 25.
How can WebSockets be better than Long-Polling in term of performance?
Answer:
One tip that got me hired by Google, Microsoft, and Stripe
I've worked for Microsoft, Google, Stripe, and received offers from many other companies. One thing I learned when I was interviewing myself is that standard interview tips are woefully inadequate.
Reverse Tech Interview: Questions to Stump an Interviewer
Few people want to get into an uncomfortable environment or an unprofitable company with no prospects. If you’re wondering how to get a real feel for a company during an interview, you’re welcome. I’ll give a list of questions that interviewers don’t usually expect...
How to become a programmer, move to the US, and get a dream job
Are you curious about what you need to do to earn more than $15.000 a month, drive a Tesla, live in sunny California, and work at Google, Apple, Facebook, or Amazon?
11 Reactive Systems interview questions and answers for software engineers Reactive Systems
Reactive systems are an architectural style that allows multiple individual applications to blend into one unit, reacting to their environment, while staying aware of each other. Here is a list of coding interview questions on Reactive Systems to help you get ready for your next data struc...
Reactive Systems
34 Microservices interview questions and answers for software engineers Microservices
Microservice architecture – a variant of the service-oriented architecture structural style – arranges an application as a collection of loosely coupled services. In a microservices architecture, services are fine-grained and the protocols are lightweight. Here is a list of coding intervie...
Microservices
7 Layering & Middleware interview questions for developers Layering & Middleware
Middleware in the context of distributed applications is software that provides services beyond those provided by the operating system to enable the various components of a distributed system to communicate and manage data. Middleware supports and simplifies complex distributed application...
Layering & Middleware
55 Docker interview questions and answers for software engineers Docker
Docker is a set of platform as a service products that use OS-level virtualization to deliver software in packages called containers. Here is a list of coding interview questions on Docker to help you get ready for your next data structures interview in 2021.
Docker
23 Databases interview questions and answers for software engineers Databases
A database is an organized collection of data, generally stored and accessed electronically from a computer system. Where databases are more complex they are often developed using formal design and modeling techniques. Here is a list of coding interview questions on Databases to help you g...
Databases
21 Concurrency interview questions and answers for software engineers Concurrency
In computer science, concurrency is the ability of different parts or units of a program, algorithm, or problem to be executed out-of-order or in partial order, without affecting the final outcome. Here is a list of coding interview questions on Concurrency to help you get ready for your n...
Concurrency
13 CAP Theorem interview questions and answers for software engineers CAP Theorem
In theoretical computer science, the CAP theorem, also named Brewer's theorem after computer scientist Eric Brewer, states that it is impossible for a distributed data store to simultaneously provide more than two out of the following three guarantees: Consistency: Every read receives the ...
CAP Theorem
Load more posts
Features
Access all answers
Get the inside track on what to expect in your next tech interview. We offer you a collection of high quality technical interview questions to help you prepare for your next coding interview.
Track progress
A smart interface helps you track your progress and focus on the topics you need. You can search through questions or sort them by difficulty or type.
Save time
Save tens of hours searching for information on hundreds of low-quality sites designed to drive traffic and make money from advertising.
Land a six-figure job at one of the top companies.
Prepare for a technical interview
Get hired with our
tech interview questions & answers
