Computer Systems & Software Updates Flashcards
7 cards from real SEO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Computer Systems & Software Updates flashcards as text
What is the SEO significance of the 'Vary: Accept-Encoding' HTTP response header?
Answer: It informs caches that responses may differ based on encoding support, preventing incorrectly compressed content from being served to crawlers
The Vary header ensures caching proxies store separate versions for clients that support gzip vs. those that don't, preventing garbled content delivery.
After a major CMS security patch, an SEO audit reveals that thousands of internal links now return 404 errors. What caused this?
Answer: The security update likely changed URL rewriting rules or database-driven slug generation, invalidating existing internal links
Security patches sometimes modify .htaccess rules or permalink structures, which can break all dynamically generated internal URLs site-wide.
Which browser developer tool feature is most useful for diagnosing render-blocking resources that hurt a page's SEO performance score?
Answer: Performance panel's waterfall / flame chart
The Performance panel's waterfall view shows which scripts and stylesheets block the main thread and delay paint metrics.
When a software update enables lazy loading for all images site-wide via JavaScript, what SEO risk should be immediately evaluated?
Answer: Googlebot may not scroll to trigger lazy loading, causing images and their surrounding content to be missed during indexing
Googlebot has limited scroll simulation, so images dependent on scroll events may not be discovered or indexed unless native lazy loading attributes are used.
A developer proposes using JavaScript to generate all title tags and meta descriptions dynamically after page load. Why is this an SEO risk?
Answer: Googlebot may use fallback content or placeholder text if it indexes the page before JavaScript executes the dynamic metadata
If Googlebot indexes the page during the crawl phase before full JS rendering, it may capture empty or default metadata rather than the intended dynamic values.
What does 'Interaction to Next Paint' (INP) measure, and why was it introduced as a Core Web Vitals metric?
Answer: It measures the latency of all user interactions with a page to assess overall responsiveness, replacing FID which only captured the first interaction
INP captures the worst-case interaction delay across an entire page visit, providing a more comprehensive responsiveness signal than FID's single first-interaction measurement.
How should an SEO handle a situation where a third-party software widget (e.g., chat tool) injects hundreds of low-quality links into every page's DOM?
Answer: Use the 'nofollow' or 'ugc' attribute on injected links, or ask the vendor to implement it, to prevent passing PageRank to low-quality destinations
Applying rel='nofollow' or rel='ugc' to widget-injected links tells Google not to associate those links with your site's ranking signals.