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Progressive Web Apps
Web applications that use modern capabilities to deliver app-like experiences.
100 questions
Q1.
PWA
Beginner
Q2.
What is a Progressive Web App (PWA)?
Beginner
Q3.
How do PWAs differ from traditional web applications?
Beginner
Q4.
Can you list the core pillars of a PWA?
Beginner
Q5.
What are the advantages of developing a PWA over a native app?
Beginner
Q6.
What is the role of the service worker in a PWA?
Beginner
Q7.
How do you make a web app installable on a user’s home screen?
Beginner
Q8.
What is a manifest file and what is its significance in PWAs?
Beginner
Q9.
What is the purpose of the ‘Add to Home Screen’ feature?
Beginner
Q10.
How can you detect if your web app has been added to the user’s home screen?
Beginner
Q11.
Explain how PWAs achieve offline functionality.
Beginner
Q12.
What are the security requirements for a PWA?
Beginner
Q13.
Can you delineate between App Shell and content in a PWA context?
Beginner
Q14.
How does a PWA function on a low-bandwidth or offline network?
Beginner
Q15.
What are push notifications in the context of PWAs?
Beginner
Q16.
Can you explain the concept of background sync in PWAs?
Beginner
Q17.
What is a service worker lifecycle?
Beginner
Q18.
How do you handle compatibility issues across different browsers for PWAs?
Beginner
Q19.
How would you test a PWA?
Beginner
Q20.
What is the role of HTTPS in PWAs?
Beginner
Q21.
What are the limitations of PWAs?
Beginner
Q22.
What is the role of the ‘install’ event in a service worker?
Beginner
Q23.
How do you cache assets using service workers?
Beginner
Q24.
Can you explain how service worker updates are managed?
Beginner
Q25.
What different caching strategies can be implemented with service workers?
Beginner
Q26.
Describe how you would use a service worker to intercept network requests.
Beginner
Q27.
What is a FetchEvent in the context of service workers?
Beginner
Q28.
How do you handle errors in a service worker script?
Beginner
Q29.
Discuss how service workers can be debugged.
Beginner
Q30.
What is the ‘activate’ event in a service worker and what is it used for?
Beginner
Q31.
Explain the concept of “cache busting” and why it’s important for PWAs.
Beginner
Q32.
What key properties does the Web App Manifest contain?
Beginner
Q33.
How do you define the start URL in a manifest file?
Beginner
Q34.
What are the guidelines for designing app icons for a PWA?
Beginner
Q35.
How does the web app manifest affect the appearance of the PWA on a device?
Intermediate
Q36.
Can you dynamically generate a web app manifest or must it be static?
Intermediate
Q37.
How do push notifications enhance user engagement in a PWA?
Intermediate
Q38.
What strategies can you use to prompt the user to install your PWA?
Intermediate
Q39.
How would you customize the prompt that asks users to add your PWA to their home screen?
Intermediate
Q40.
Can you tailor the UX of a PWA depending on whether it’s run in a browser or as an installed app?
Intermediate
Q41.
What is the significance of having a responsive design in PWAs?
Intermediate
Q42.
What tools can be used for performance auditing of a PWA?
Intermediate
Q43.
How do you optimize the loading time of your PWA?
Intermediate
Q44.
Discuss the impact of JavaScript bundling and minification on PWAs.
Intermediate
Q45.
What role does image optimization play in PWAs?
Intermediate
Q46.
How do you track and improve the First Contentful Paint (FCP) in PWAs?
Intermediate
Q47.
What is Time to Interactive (TTI), and how do you optimize it for PWAs?
Intermediate
Q48.
How do you implement lazy loading in a PWA?
Intermediate
Q49.
Why is it important to prioritize above-the-fold content for PWAs?
Intermediate
Q50.
Discuss how to prevent janky animations and achieve smooth performance in a PWA.
Intermediate
Q51.
What strategies can be employed to minimize main-thread work in a PWA?
Intermediate
Q52.
What architectural patterns are commonly used in PWAs?
Intermediate
Q53.
How should you structure your files and directories for a PWA?
Intermediate
Q54.
Can you explain the Model-View-ViewModel (MVVM) architecture in the context of PWAs?
Intermediate
Q55.
How do you manage state in a PWA?
Intermediate
Q56.
Discuss the role of front-end frameworks and libraries in PWA development.
Intermediate
Q57.
How does a PWA handle dynamic content and user personalization?
Intermediate
Q58.
How do you design for offline-first in a PWA?
Intermediate
Q59.
What is the role of IndexedDB in PWAs?
Intermediate
Q60.
How can you synchronize local changes with a server once online?
Intermediate
Q61.
Can you explain how to manage user-generated content in offline mode?
Intermediate
Q62.
What are the considerations for storing and retrieving data locally in a PWA?
Intermediate
Q63.
How do you register a service worker for push notifications?
Intermediate
Q64.
What is the Web Push Protocol and how is it used in PWAs?
Intermediate
Q65.
Can you explain the notification click event handling in a PWA?
Intermediate
Q66.
What are the best practices for sending push notifications to users?
Intermediate
Q67.
How do you customize the notification appearance and behavior on different platforms?
Intermediate
Q68.
How do you ensure that a PWA remains scalable as features grow?
Advanced
Q69.
Discuss the use of module bundlers in PWAs for better maintainability.
Advanced
Q70.
What considerations must be taken into account for version control in PWAs?
Advanced
Q71.
How do you handle data migrations in PWAs?
Advanced
Q72.
Can you implement feature toggles in PWAs?
Advanced
Q73.
Why are PWAs well-suited for e-commerce platforms?
Advanced
Q74.
How can a PWA improve conversion rates for an e-commerce site?
Advanced
Q75.
What are the unique challenges of developing PWAs for e-commerce?
Advanced
Q76.
How would you handle checkout and payment processing in an e-commerce PWA?
Advanced
Q77.
Can you discuss strategies for integrating analytics in an e-commerce PWA?
Advanced
Q78.
What are the common APIs used in developing a PWA?
Advanced
Q79.
How do PWAs integrate with native device features?
Advanced
Q80.
Discuss how a PWA can access a user’s camera or GPS.
Advanced
Q81.
How do you handle cross-origin requests in a PWA?
Advanced
Q82.
How can third-party services be integrated into a PWA?
Advanced
Q83.
What are Progressive Enhancement and Graceful Degradation in the context of PWAs?
Advanced
Q84.
How do you implement a periodic background sync in PWA?
Advanced
Q85.
Discuss the concept of Credential Management API in PWAs.
Advanced
Q86.
What is the Payment Request API and how does it simplify transactions in a PWA?
Advanced
Q87.
How can a PWA be part of the Internet of Things (IoT)?
Advanced
Q88.
How do you optimize a PWA for iOS devices?
Advanced
Q89.
What are the current limitations for PWAs on the Apple App Store?
Advanced
Q90.
Discuss the differences between optimizing PWAs for Android vs. iOS.
Advanced
Q91.
How does the choice of web browser affect the behavior of a PWA?
Advanced
Q92.
What strategies do you use for testing the service workers?
Advanced
Q93.
How do you simulate offline testing conditions for your PWA?
Advanced
Q94.
What are the main aspects to test before deploying a PWA?
Advanced
Q95.
How can you debug a PWA on a mobile device?
Advanced
Q96.
What are common issues encountered when testing push notifications and how do you address them?
Advanced
Q97.
Can you provide examples of successful PWAs?
Advanced
Q98.
Discuss how PWAs have impacted mobile traffic for major websites.
Advanced
Q99.
How has the user engagement changed pre and post PWA implementation for a notable company?
Advanced
Q100.
What challenges did developers face when transitioning a traditional web app to a PWA?
Advanced
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