Web Performance quiz results
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- 1Who is solely responsible for web performance?
- Developers
- Anybody who ships. Developers, DevOps, SEO-Experts, Marketeers, etc. Correct answer
- Product Owner
- Project Manager
- 2What does web performance stand for?
- Ranking of key pages
- Load times, interaction timing, etc. Correct answer
- Conversion rates of the website
- 3How much faster should your site, in general, be compared to your fastest competitor?
- 40%
- 10%
- 20% Correct answer
- 1%
- 4What has a direct correlation with web performance?
- User experience and business success Correct answer
- Number of coffees drunk and choice of milk
- Body weight and BMI
- 5In which range, does the user feels that the responses to his actions are instant?
- 0 – 300 ms Correct answer
- 300 - 1000 ms
- 1000 ms
- 10s +
- 6What does the abbreviation WPO stand for?
- World People Organization
- Web Performance Optimization Correct answer
- Web Performance Organization
- Web Presidents Organization
- 7What is perceived performance?
- Describes the social circumstances the user visiting your site has.
- Perceived performance is how fast a website seems to the user. Correct answer
- Shows how much money you can make from a faster website.
- 8The PRPL pattern describes
- A pattern describing the following steps: push, Render, Pre-cache, Lazy load. Correct answer
- A strategy to optimize the CSS.
- A compressing image algorithm.
- A font loading strategy.
- 9What are the Core Web Vitals?
- Core optimization pattern to make a website faster.
- Minimum system requirements for hosting a website.
- A subset of performance metrics. Correct answer
- 10What is the First Contentful Paint?
- First h2-Tag on the website.
- First paint of the walls of someone's first own flat.
- First meaningful painting of a child.
- How long it takes to render the first DOM content. Correct answer
- 11What is the Largest Contentful Paint?
- The biggest apartment you've ever painted
- Render time of the largest element (image, text block) Correct answer
- Largest meaningful painting of a child.
- Largest text block that fits your Google search.
- 12What is the Time to Interactive?
- The time the browser renders the head section of the website.
- The time it takes until the next body exercise.
- The time until the website is fully interactive. Correct answer
- The time the user has to wait for a server response.
- 13What is the Total Blocking Time?
- The time between First Contentful Paint and Time to Interactive. Correct answer
- The time between Time to First Byte and Time to Interactive.
- The time between Largest Contentful Paint and Time to Interactive.
- The time between Cumulative Layout Shift and Time to Interactive.
- 14What is the CLS?
- A web performance measurement method.
- Measures layout shifts. Correct answer
- A new browser standard.
- Stands for Community Layout Specification and describes the way to handle layout in the browser.
- 15What is synthetic testing?
- Performance measurement method with data from the lab. Correct answer
- Performance measurement method with data from only mobile users.
- Performance measurement method with data from real users.
- Performance measurement method with data from only desktop users.
- 16What is RUM?
- Performance measurement method with data from the lab.
- Performance measurement method with data from only mobile users.
- Performance measurement method with data from real users. Correct answer
- Performance measurement method with data from only desktop users.
- 17What is the TTFB?
- Time to First Bit
- Time to First Byte Correct answer
- Time to First Base64
- Time to First Browser
- 18To render 60 frames every 1000ms, how much time is available to render a single frame?
- 100 ms
- 20 ms
- 16 ms Correct answer
- 30 ms
- 19What time in ms should you aim for animations in the real world rather than the 16ms?
- 10 ms Correct answer
- 20 ms
- 12 ms
- 8 ms
- 20What is the maximum response time you should aim for the completion of the whole task?
- 50 ms Correct answer
- 100 ms
- 200 ms
- 250 ms
- 21What is a performance budget?
- The amount of money a team can spend on optimizations.
- A performance budget is a set of limits imposed on metrics that affect site performance. Correct answer
- The revenue that a company has more through performance optimizations.
- The profit that a company ears through performance optimizations.
- 22What is Brotli?
- An HTML tag for Breadcrumbs.
- A compression algorithm. Correct answer
- A well-known web performance company.
- 23What are modern web image formats?
- WebP & AVIF Correct answer
- PicWeb & JPD
- AVIP & PNA
- TIF & RAP
- 24What is the module/nomodule pattern?
- A web performance monitoring pattern.
- A method in CSS to wrap images into modules.
- A pattern to export a WebAssembly component from RUST.
- A pattern that describes the practice of serving only modern code to modern browsers and only code to old browsers. Correct answer
- 25What is code-splitting?
- Splitting the codebase into smaller parts that are loaded on demand. Correct answer
- Doing code-review by more than 2 people.
- Share code parts with a developer colleague
- Split a task in frontend and backend development.
- 26What is critical CSS?
- CSS that is deprecated.
- CSS that is unused.
- Critical CSS is a technique that extracts the CSS for above-the-fold content in order to render content to the user as fast as possible. Correct answer
- CSS bug that is hard to find.
- 27What is the Critical Rendering Path?
- A critical request chain of the website.
- A circular reference in JavaScript files.
- A wrong path to an image.
- A sequence of steps the browser has du complete to display the website. Correct answer
- 28How many pages include at least one third-party script?
- 93.59% Correct answer
- 81.53%
- 52.49%
- 16.41%
- 29What does font-display mean?
- Tells the developer which font he should download locally.
- The font-display property defines how font files are loaded and displayed by the browser. Correct answer
- Tells the browser what font the website has.
- 30What does max-age in the HTTP cache headers stand for?
- The time a cache expires.
- The maximum amount of time a resource is considered fresh. Correct answer
- The time a service worker caches fonts.
- The max-age of an image.
- 31What is adaptive loading?
- It describes the connections a browser opens up.
- Adaptive loading is a feature of the browser that reduces network activity on low battery.
- Adaptive loading is a pattern where your website responds to users based on their actual device and network connection. Correct answer
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