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Google mobile sites exam answers 2018

Google mobile sites exam answers 2018

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1. Which is NOT part of AMP:
• Inline CSS
• Analytics
• AMP HTML
• Custom Fonts
2. A good notification:
• It is relevant
• It delivers in the background
• It can be dismissed
• It has a default action
3. True or false: Constructing the Document Object Model (DOM) requires style information.
• True
• False
4. Why can an intermittently available mobile network result in a poor experience?
• Enabling WiFi reduces battery life
• It uses more data
• Some assets might not be loaded
• It is less secure than WiFi
5. Which metric is affected by slow pagespeed?
• Viewthrough rate
• Conversion rate
• Clickthrough rate
• Impressions
6. Which can be sacrificed to reduce the file size of an image?
• Quality
• rendering speed
• color range
• compression
7. Which is a benefit of a mobile site over an app for businesses?
• Shorter development timelines. Mobile sites allow for easy updating (for example, users don’t need to accept or install your updates.
• You have to build a separate site for tablets and phones
• Mobile sites require approvals before one can gain access
• Mobile sites only work on Android
8. To deliver the fastest possible time to first render, you should minimize the number of:
• The number of CSS classes
• The number of critical JavaScript functions
• The number of critical resources
• The number of critical HTML classes
9. Which is NOT part of AMP:
• Inline CSS
• Analytics
• AMP HTML
• Custom Fonts
10. Before the browser can render the page, it needs to construct the:
• Pixel pipeline
• DOM and CSSOM trees
• UX trees
• HTML and JavaScript
11. Which format is preferred for the multi-device and high-resolution icons?
• PNG
• Vector (SVG)
• Data URLs
• JPEG
12. Why do CSS @imports harm performance?
• They can introduce unwanted dependencies
• They create a less efficient CSSOM
• @import loads files less efficiently than <link>
• They require additional CPU time to parse
13. Some users are not comfortable converting on their mobile device. What could be an action you can take to improve their experience?
• Making your primary call-to-action buttons more prominent
• Showing the desktop version of the site on mobile devices
• Offering secondary call-to-action buttons, like social sharing
• Asking the user to register to save their details
14. Resources with responses that are ______ for all users are great candidates to be cached by a CDN.
• Identical
• Sized
• Different
• Variants
15. region of ______. Any longer than that and you risk taking up too much time.
• 5 – 6ms
• 7 – 8ms
• 3 – 4ms
• 9 – 10ms
16. True or false: You can experiment with Google Analytics features by using the Google Merchandise Store demo account.
• True
• False
17. When referring to the critical rendering path in site performance, a critical resource is:
• any resource that returns 404
• a resource that could block initial display of the page
• any resource that must be loaded
• a resource that takes more than 500ms to load
18. Why are push notifications important for advertisers?
• They deliver timely updates to users
• They give users the opportunity to re-engage with content they are interested in
• The information they deliver can be acted on immediately
• All of the answer options are correct
19. Keeping CSS independent of HTML allows us to treat_______and _______as separate concerns.
• analytics; optimization
• images; articles
• content; design
• user experience; speed
20. AMP ______ the page ______ waiting for resources to download:
• indexes; while
• caches; before
• lays out; without
• displays; after
21. Which of the following is NOT a best practice to optimize forms on mobile?
• Exposing options instead of using a drop-down menu
• Using a real-time validation for errors in forms
• Showing labels inside form fields for convenience
• Offering users a numerical keyboard for telephone number field
22. How does AMP work?
• Keeps all third-party JavaScript out of the critical path
• All of the above
• Doesn’t let extension mechanisms block rendering
• Allows only asynchronous scripts
23. To optimize for speed, you shouldn’t use too many webfonts and you should minimize the number of _____.
• Dingbats
• Variants
• Descenders
• Ligatures
24. What does “Variant A” in A/B Testing usually represent?
• Test version of the web page that is modified from the original
• Original version of the web page
25. A good notification:
• It is relevant
• It delivers in the background
• It can be dismissed
• It has a default action
26. The render tree contains:
• visible content
• content of the page
• the DOM
• the styles of the page
27. Which is true about calls-to-action usage on mobile homepages?
• Same calls-to-action should be used both on mobile and desktop sites
• Use only menus
• Keep call to action on the second page
• Calls-to-action should be prominent on the visible area of the mobile homepage
28. Research shows that mobile users expect to:
• tap the logo at the top of a mobile page to take them back to the homepage
• tap the logo at the top of a mobile page to take them to a “Contact Us” page
• see the logo below the fold on mobile sites
• tap the logo at the top of a mobile page to take them to new products
29. Which allows for efficient font reuse between pages?
• The local() directive
• The font matching algorithm
• Revalidation token
• WOFF2 fonts
30. What’s the fastest and best-optimized resource?
• An image
• The one not sent
• Javascript
• Web fonts
31. True or false: Constructing the Document Object Model (DOM) requires style information.
• True
• False
32. How can you make the job a lot simpler for the browser?
• Follow the style guide
• Add more parents
• Change the selector to a class
• Create more complex CSS
33. Which components often account for most of the downloaded bytes on a web page?
• Fonts
• Articles
• JavaScript
• Images
34. True or false: Using a mix of desktop and mobile-optimized pages on mobile sites improves the user experience since some users are more familiar with the desktop version of the site.
• True
• False
35. Which is an example of a situation when an unnecessary resource negatively impacts the user experience.
• Optimized images
• Lazy loading
• One web font
• A photo carousel on the homepage that allows the visitor to preview multiple photos with a quick click
36. Why did Facebook create “2G Tuesdays”?
• To understand how people on 2G use their product
• To run a random experiment
• Most users are on 2G
• Facebook didn’t create “2G Tuesdays”
37. What is it that the App shell helps with
• Creating a fully optimized site
• Improves elements of the UX
• Making the full page load faster
• Making transitions between pages faster
38. Which of the following statements is true about the mobile experience of users?
• It’s important to show as much information as possible on the visible part of a mobile site
• Users are willing to accept longer load times for high-resolution images
• It’s important to show a prominent “full site” label on a mobile site
• It’s important to use call-to-action buttons to keep users in the same browser window
39. Which describes how a Service Worker operates?
• It runs a programmable network proxy
• It doesn’t handle network requests coming from the navigation on the website
• It can be used only when the user is browsing the website
• None of these answer options describe a Service Worker
40. Which of these features is part of a Progressive Web App?
• UX API
• Location API
• Call API
• Add to home screen
41. For each font on your website you should:
• Minimize the HTML
• Make sure to add as many as possible
• Add CSS
• Minimize the number of used variants.
42. Which of the following describes the Payment API correctly?
• It is designed for external card readers
• It requires a phone with a fingerprint reader
• It bypasses the checkout form
• It replaces your payment processor
43. Which metric is affected by slow pagespeed?
• Viewthrough rate
• Conversion rate
• Clickthrough rate
• Impressions
44. How many times per second do most devices refresh their screens?
• 100
• 35
• 60
• 20
45. The first step to optimize the critical rendering path is:
• analyze and characterize your critical path: number of resources, bytes, length.
• optimize the number of critical bytes to reduce the download time (number of roundtrips)
• minimize number of critical resources: eliminate them, defer their download, mark them as async, and so on
• optimize the order in which the remaining critical resources are loaded: download all critical assets as early as possible to shorten the critical path length.
46. Google Optimize does NOT currently allow you to:
• test new website designs, layouts and content with a subset of your visitors
• serve experiments to specific groups of users that you’ve defined as Audiences in Google Analytics
• do heatmap analysis to better understand to user behaviour on your site
• use your existing goals and metrics in Google Analytics as experiment objectives
47. According to a Google poll, what is the top frustration when users browse the web on their mobile device?
• Not knowing where to click
• Waiting for slow pages to load
• Being shown interstitials
• Watching a video
48. Which of the following reports in Google Analytics helps you to identify leakages from the conversion funnel?
• Product Performance Report
• Checkout Behavior Analysis Report
• Device Usage Report
• Top Landing Pages Report
49. Which can be sacrificed to reduce the file size of an image?
• Quality
• rendering speed
• color range
• compression
50. Before introducing mobile site design best practices to your clients, you should examine their.
• existing mobile sites
• page speed scores
• design process
• staffing and budget
51. Which is a benefit of a mobile site over an app for businesses?
• Shorter development timelines. Mobile sites allow for easy updating (for example, users don’t need to accept or install your updates.
• You have to build a separate site for tablets and phones
• Mobile sites require approvals before one can gain access
• Mobile sites only work on Android
52. True or false: Mobile pages that load 1s faster see up to a 27% increase in CvR.
• False
• True
53. At a minimum, what Speed Index score should you be aiming for?
• Less than 5000
• Greater than 95%
• Within 10% of similar sites
• Greater than 5000
54. How do you prioritize optimization of the mobile site for browser versions or screen resolutions:
• Optimize all at the same time
• Look for the oldest version of your site
• Look for the highest number of sessions and lowest conversion rates (or highest bounce rates)
• Prioritize the site with the highest conversion rates
55. True or false: JavaScript can block DOM construction unless explicitly declared as async.
• False
• True
56. Image information such as location and camera description can often be deleted to reduce image sizes. This type of information is called:
• Raster
• Vector
• GZIP
• Metadata
57. Mobile sites:
• are accessed through the desktop device’s web browser
• have specific functionality for mobile devices
• need to be downloaded or installed to a device
• require approvals to access
58. Which changes to “geometric properties” affect the layout?
• All of the above
• Widths
• Heights
• Top
59. True or false: A/B testing allows you to test two or more elements on the site to understand their effects on each other
• False
• True
60. At a minimum, what page weight should you be aiming for?
• 2MB
• 1MB
• More than 3MB
• Less than 1MB
61. Which is the best way to discover and prioritize landing pages for UX improvement potential?
• Checking Exit Pages Report focusing on Page Views metric
• Checking All Pages Report focusing on Unique Page Views metric
• Checking All Pages Report focusing on Average Time on Page metric
• Checking Landing Pages Report focusing on Bounce Rate metric
62. A Progressive Web App:
• works even with unreliable network through service worker
• slows experience and therefore decreases advertisers conversion rate
• needs high bandwidth environments
• is the same as Accelerated Mobile Page
63. In which of the following situations can a high bounce rate be interpreted as a good metric?
• Campaign landing page brings the user to the first step of a 3-step lead generation form
• Campaign landing page brings the user to the product detail page
• Campaign landing page brings the user to a page where the company promotes their phone number to receive calls
64. True or false: To instruct the browser to use the default device width, you would use [meta name=”viewport” content=”width=device-width”].
• False
• True
65. Which of the following describes an App shell?
• It comprises of all page elements which are dependant of the specific page contents
• It discourages caching of content that overlaps across pages of the website
• It provides a fast first impression gracefully transitioning to a fully loaded page
• None
66. What is a valid event for a Service Worker to emit when it’s registered?
• Canceled
• Install
• Idle
• Stop
67. When using Chrome devtools, what should you limit the connectivity to?
• Regular 2G
• Regular 3G
• Regular 4G
• No Throttling
68. Which is NOT true about Responsive Sites?
• Responsive Sites are easier to maintain
• Responsive Sites are cost-effective
• Responsive Sites usually have faster load times vs Separate (m.dot) Sites
• Responsive Sites have one codebase, deployment and URL
69. In the layout step, the browser:
• first resizes elements before computing their position
• computes the size and position of render tree elements
• displays the on-screen elements in their new positions
• forces the DOM to be rebuilt
70. Which of the following is NOT true about site search experience on mobile sites?
• Users rely on filters to narrow down search results
• Comprehensive search results are better than concise results
• Smart-search features like auto-complete and corrected misspelling are especially important to have on small screens
• Positioning site search at the top of a mobile page with an open-text search box is a best practice
71. Which of the following is NOT a best practice for a financial company to keep users from dropping out of the funnel?
• Using click-to-call buttons for complicated forms or complex tasks
• Letting users convert as a guest
• Asking for registration to use the site
• Remembering and prefilling preferences of registered users in forms
72. True or false: Images should never change when rotating a device screen or between different device sizes
• True
• False
73. To deliver the fastest possible time to first render, you should minimize the number of:
• The number of CSS classes
• The number of critical JavaScript functions
• The number of critical resources
• The number of critical HTML classes
74. Which most accurately describes the purpose of compression?
• Minimizing file size
• Making the code faster
• Combining files
• Fitting more into the cache


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