Web Traffic Technology & Digital Applications 4 — Questions and Answers
Question 1: In A/B testing for website optimization, what is a 'control group'?
- The group that experiences the original, unchanged version of the page (Correct answer)
- The group that sees all tested variations simultaneously
- The group used to validate statistical significance thresholds
- The group excluded from analytics tracking during the test
Correct answer: The group that experiences the original, unchanged version of the page
The control group in an A/B test sees the original version (variant A), serving as the baseline against which the new variation is measured.
Question 2: What does 'session replay' technology capture for website analysis?
- Recordings of mouse movements, clicks, scrolls, and keystrokes during a user's visit (Correct answer)
- Video recordings of users' webcams as they browse a website
- Server-side logs of all HTTP requests made during a session
- Heatmaps aggregated from thousands of simultaneous user sessions
Correct answer: Recordings of mouse movements, clicks, scrolls, and keystrokes during a user's visit
Session replay tools (like Hotjar or FullStory) record DOM interactions so analysts can watch a reproduction of individual user sessions.
Question 3: What is 'server-side rendering' (SSR) and how does it impact web traffic?
- HTML is generated on the server per request, delivering fully formed pages that improve SEO crawlability and initial load speed (Correct answer)
- JavaScript executes entirely in the browser before any HTML is sent to users
- Content is pre-built at deploy time into static HTML files for instant delivery
- The server compresses CSS and JS files before transmitting them to the client
Correct answer: HTML is generated on the server per request, delivering fully formed pages that improve SEO crawlability and initial load speed
SSR generates complete HTML on the server for each request, making pages immediately readable by crawlers and reducing time-to-first-meaningful-paint for users.
Question 4: Which metric measures the percentage of website visitors who complete a desired goal, such as making a purchase?
- Conversion Rate (Correct answer)
- Click-Through Rate
- Engagement Rate
- Goal Completion Index
Correct answer: Conversion Rate
Conversion rate is calculated by dividing the number of goal completions by the total number of visitors, expressed as a percentage.
Question 5: What is the function of a 'canonical tag' (rel=canonical) on a webpage?
- To tell search engines which URL is the preferred version when duplicate or similar content exists at multiple URLs (Correct answer)
- To specify the primary language of a page's content for internationalization
- To define the page's main topic for semantic search algorithms
- To redirect users from duplicate pages to the original automatically
Correct answer: To tell search engines which URL is the preferred version when duplicate or similar content exists at multiple URLs
The canonical tag signals to search engines the authoritative URL for a piece of content, consolidating ranking signals and preventing duplicate content issues.
Question 6: What is 'progressive enhancement' as a web development strategy?
- Building a functional base experience for all browsers, then layering advanced features for capable browsers (Correct answer)
- Gradually loading page elements from most important to least important
- Progressively increasing server capacity as traffic grows
- Incrementally migrating a site from HTTP to HTTPS
Correct answer: Building a functional base experience for all browsers, then layering advanced features for capable browsers
Progressive enhancement starts with a universally accessible HTML baseline and adds CSS and JavaScript layers so all users get a working experience regardless of browser capability.
Question 7: In web analytics, what distinguishes a 'user' from a 'session'?
- A user is an individual visitor identified by a cookie or ID, while a session is a single continuous period of activity by that user (Correct answer)
- A user is an authenticated account holder, while a session includes anonymous visitors
- A user represents a unique IP address, while a session counts total page loads
- A user metric counts lifetime visits, while a session counts only the current day
Correct answer: A user is an individual visitor identified by a cookie or ID, while a session is a single continuous period of activity by that user
One user can generate multiple sessions; a session ends after a defined inactivity period (typically 30 minutes) or at midnight, while the user identifier persists across sessions.
Web Traffic Technology & Digital Applications 4
In A/B testing for website optimization, what is a 'control group'?