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691 wordpress developer interview questions shared by candidates

1.What is react? 2.Is react library or framework? 3.Advantages of React 4. What is Virtual Dom 5 What is Shadow Dom 6.What are stateful and stateless components in react? 7. Rules of React hooks 8. If component is still unmounted how will you change it 9. How can you cache in React? 10. What is Git and Github? 11. Can we use Git without Github 12. What is git blame command 13. What is git Cherry-pick command 14. If i done some changes in my files, but the file is in wrong branch and i have not commited it , how can i move the changes to the correct branch. 15. difference between HEAD, working tree and index, in Git? 16. How can i make changes in a file after commiting 17. If i have some files which i dont have want share,how can i do it in git 18.What is function/difference of each command ( add, commit and push )? 19. Can i write plain Javascript in React js 20. If i have to store my password in database securely, what should i do 21.what is hashing 22. If my password is "123" and your password is "12" will they have same hash length 23. What is the lenght of Sha 256 hashed password 24. If my password if "hello"and your is also "hello" will both be same. 25. How to uniquely identify same hashed password 26. What is salting 27. What is encrption and types of encrption 28. How does whatsapp uses asymmetric encrption 29. What is session and cookie 30. What if user disables cookie, what will happen 31. Can we store cookie for lifetime 32. What is defaulf lifetime of session and cookie 33. Explain the process of captcha 34. Why to use session to store captcha 35. How to do client side and server side validation 36. How to make sure no malicious data is added to our database 37. What is Sanitization and why it is needed 38. What is Cross Site Scripting and give a real life example of it 39. How does youtube seamlessly streams video ,explain the backend. 40. Interviewer share his screen and shown image of 3 different elevator and asked to design the algorithm for it and which data structure can be used. 41. How to increase the speed of a website 42. Can two device have same Ip address 43. How do Isp providers differentiate which ip should be given 44. If you have a blog website whoes users are growing daily , how will you handle it. 45. How to make a website work slow 46. How to debug PHP code 47. How to do Unit testing in PHP 48.what is indexing 49. What are it drawbacks 50. Can we index multiple columns 51. What is join and it types 52 . Explain Left and Inner Join 53. What are pseudo elements in css 54. What are different type of displaying methods in css and explain them 55. What are selectors in css 56. What is a CSS preprocessor? 57. what is chromium 58. What you will do to make your css compatible to all the browsers 59. What are react mixins 60. What are uncontrollabe components in react 61. If we use plain js in react will it directly manipulate DOM 62. If i have a blog website what will it store in the CDN
avatar

Wordpress Developer

Interviewed at rtCamp

4.2★
Sep 4, 2024

1.What is react? 2.Is react library or framework? 3.Advantages of React 4. What is Virtual Dom 5 What is Shadow Dom 6.What are stateful and stateless components in react? 7. Rules of React hooks 8. If component is still unmounted how will you change it 9. How can you cache in React? 10. What is Git and Github? 11. Can we use Git without Github 12. What is git blame command 13. What is git Cherry-pick command 14. If i done some changes in my files, but the file is in wrong branch and i have not commited it , how can i move the changes to the correct branch. 15. difference between HEAD, working tree and index, in Git? 16. How can i make changes in a file after commiting 17. If i have some files which i dont have want share,how can i do it in git 18.What is function/difference of each command ( add, commit and push )? 19. Can i write plain Javascript in React js 20. If i have to store my password in database securely, what should i do 21.what is hashing 22. If my password is "123" and your password is "12" will they have same hash length 23. What is the lenght of Sha 256 hashed password 24. If my password if "hello"and your is also "hello" will both be same. 25. How to uniquely identify same hashed password 26. What is salting 27. What is encrption and types of encrption 28. How does whatsapp uses asymmetric encrption 29. What is session and cookie 30. What if user disables cookie, what will happen 31. Can we store cookie for lifetime 32. What is defaulf lifetime of session and cookie 33. Explain the process of captcha 34. Why to use session to store captcha 35. How to do client side and server side validation 36. How to make sure no malicious data is added to our database 37. What is Sanitization and why it is needed 38. What is Cross Site Scripting and give a real life example of it 39. How does youtube seamlessly streams video ,explain the backend. 40. Interviewer share his screen and shown image of 3 different elevator and asked to design the algorithm for it and which data structure can be used. 41. How to increase the speed of a website 42. Can two device have same Ip address 43. How do Isp providers differentiate which ip should be given 44. If you have a blog website whoes users are growing daily , how will you handle it. 45. How to make a website work slow 46. How to debug PHP code 47. How to do Unit testing in PHP 48.what is indexing 49. What are it drawbacks 50. Can we index multiple columns 51. What is join and it types 52 . Explain Left and Inner Join 53. What are pseudo elements in css 54. What are different type of displaying methods in css and explain them 55. What are selectors in css 56. What is a CSS preprocessor? 57. what is chromium 58. What you will do to make your css compatible to all the browsers 59. What are react mixins 60. What are uncontrollabe components in react 61. If we use plain js in react will it directly manipulate DOM 62. If i have a blog website what will it store in the CDN

I don't remember exactly the questions correctly, but the most common easy ones were: Q1. What is HTTP, difference between HTTP and HTTPS. Q2. What is jQuery and which is more efficient jQuery or JavaScript? Q3. Can you view session and cookie data from client browser. Q4. What is React and why we use React? What is difference between React and plain JavaScript? Which is more efficient? Q5. What are the different mail services and protocols and they work at which layer (OSI Model)? Hard ones: I don't remember those but guys prepare well the topics like encryption, hashing, session and cookies in detail. Scenario based: Q. My website is very fast and I want to make it throttle or a bit slow, how can I achieve this behaviour? Q. My website is slow even when the hardware (server, etc.) on which it is deployed is of best quality, what could be the problem and how could I identify the problem and make the website fast?
avatar

Wordpress Engineer

Interviewed at rtCamp

4.2★
Feb 17, 2023

I don't remember exactly the questions correctly, but the most common easy ones were: Q1. What is HTTP, difference between HTTP and HTTPS. Q2. What is jQuery and which is more efficient jQuery or JavaScript? Q3. Can you view session and cookie data from client browser. Q4. What is React and why we use React? What is difference between React and plain JavaScript? Which is more efficient? Q5. What are the different mail services and protocols and they work at which layer (OSI Model)? Hard ones: I don't remember those but guys prepare well the topics like encryption, hashing, session and cookies in detail. Scenario based: Q. My website is very fast and I want to make it throttle or a bit slow, how can I achieve this behaviour? Q. My website is slow even when the hardware (server, etc.) on which it is deployed is of best quality, what could be the problem and how could I identify the problem and make the website fast?

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