Performance Optimization – WordPress MCQs

1. Which plugin is commonly used for WordPress caching?
(A) WPForms
(B) WP Super Cache
(C) Yoast SEO
(D) Elementor

2. What does CDN stand for in website optimization?
(A) Content Distribution Network
(B) Central Data Node
(C) Cached Delivery Network
(D) Cloud Data Network

3. Which image format is most performance-friendly for the web?
(A) BMP
(B) PNG
(C) WebP
(D) TIFF

4. Which plugin helps optimize database performance in WordPress?
(A) WP-Optimize
(B) WooCommerce
(C) WPBakery
(D) Jetpack

5. Lazy loading is used to:
(A) Delay image loading until needed
(B) Increase database size
(C) Disable caching
(D) Duplicate CSS files

6. Which caching method stores full HTML pages?
(A) Object caching
(B) Page caching
(C) Browser caching
(D) Opcode caching

7. What is the recommended PHP version for better WordPress performance?
(A) PHP 5.6
(B) PHP 7.4 or higher
(C) PHP 6.0
(D) PHP 4.0

8. Which plugin is popular for minifying CSS and JavaScript files?
(A) Autoptimize
(B) WooCommerce
(C) Contact Form 7
(D) Elementor

9. Gzip compression helps in:
(A) Reducing file sizes for faster delivery
(B) Enlarging images
(C) Creating backups
(D) Optimizing databases

10. Which of the following improves site loading speed?
(A) Using lightweight themes
(B) Using many plugins
(C) High-resolution unoptimized images
(D) Disabling cache

11. Browser caching helps by:
(A) Storing files locally for faster repeat visits
(B) Disabling CSS
(C) Increasing database size
(D) Removing HTML files

12. Which WordPress performance plugin combines caching, minification, and CDN support?
(A) W3 Total Cache
(B) Yoast SEO
(C) Elementor
(D) WPForms

13. What is the ideal page load time for good user experience?
(A) Under 2–3 seconds
(B) 10–15 seconds
(C) 20 seconds
(D) 5–10 seconds

14. What does AMP stand for in WordPress optimization?
(A) Accelerated Mobile Pages
(B) Advanced Media Performance
(C) Automated Memory Processing
(D) Adaptive Mobile Protocol

15. Which of the following negatively affects WordPress speed?
(A) Excessive plugins
(B) Heavy themes
(C) Large unoptimized images
(D) All of the above

16. Database optimization removes:
(A) Post revisions, spam comments, transients
(B) Themes
(C) CSS files
(D) Images

17. Which WordPress function enables object caching with Redis or Memcached?
(A) wp_cache_set()
(B) wp_insert_post()
(C) wp_query()
(D) wp_redirect()

18. Which Google tool measures website performance?
(A) Google Analytics
(B) Google PageSpeed Insights
(C) Google AdSense
(D) Google Maps

19. What is the role of a CDN?
(A) Deliver content from nearest server location
(B) Backup database
(C) Optimize CSS
(D) Create themes

20. Which plugin is popular for image optimization in WordPress?
(A) Smush
(B) WPForms
(C) Jetpack SEO
(D) WooCommerce

21. Minification removes:
(A) Extra spaces, line breaks, and comments in code
(B) Plugins
(C) Images
(D) Themes

22. Which hosting type is generally faster?
(A) Shared hosting
(B) VPS hosting
(C) Dedicated hosting
(D) Cloud hosting

23. What does HTTP/2 improve in website performance?
(A) Faster loading with multiplexing and compression
(B) Slower data transfer
(C) Removes caching
(D) Disables SSL

24. Which plugin enables caching at server-level for WordPress?
(A) LiteSpeed Cache
(B) Elementor
(C) WPForms
(D) Contact Form 7

25. What is the benefit of using a lightweight theme?
(A) Faster page load times
(B) Larger CSS files
(C) More server load
(D) Slower speed

26. Which metric measures time before a page starts displaying?
(A) TTFB (Time to First Byte)
(B) SEO ranking
(C) Database size
(D) Cache rate

27. WP Rocket is known for:
(A) Performance optimization & caching
(B) SEO optimization
(C) Image editing
(D) Theme creation

28. Which file type is best for vector images on the web?
(A) SVG
(B) JPEG
(C) BMP
(D) TIFF

29. Which WordPress setting can limit post revisions to reduce database size?
(A) WP_POST_LIMIT
(B) WP_MEMORY_LIMIT
(C) WP_POST_REVISIONS
(D) WP_CACHE

30. Deactivating unused plugins helps in:
(A) Reducing load time and server usage
(B) Improving SEO
(C) Changing design
(D) Updating themes

31. What is critical CSS?
(A) CSS needed to render above-the-fold content
(B) CSS for the footer only
(C) CSS for admin panel
(D) CSS for plugins

32. Which caching stores compiled PHP code for reuse?
(A) Page caching
(B) Browser caching
(C) Opcode caching
(D) Object caching

33. Which image optimization technique reduces size without losing quality?
(A) Lossless compression
(B) Lossy compression
(C) Resizing
(D) Cropping

34. What is the function of Heartbeat Control plugin?
(A) Reduces server load by controlling AJAX requests
(B) Improves SEO
(C) Optimizes images
(D) Creates backups

35. Prefetching in WordPress helps with:
(A) Loading resources in advance for faster browsing
(B) Slowing down database queries
(C) Removing themes
(D) Blocking cache

36. Which tool can check Core Web Vitals for a WordPress site?
(A) Google Search Console
(B) Google Docs
(C) Google AdSense
(D) Google Drive

37. Too many HTTP requests on a page cause:
(A) Slower load times
(B) Faster page speed
(C) Improved caching
(D) Better SEO

38. What is the purpose of combining CSS and JS files?
(A) Reduce number of HTTP requests
(B) Increase server load
(C) Improve SEO
(D) Create backups

39. Which plugin helps optimize fonts in WordPress?
(A) OMGF (Optimize My Google Fonts)
(B) WP Rocket
(C) Yoast SEO
(D) Jetpack

40. A WordPress site with poor hosting usually has:
(A) Slow response time
(B) Faster load time
(C) Better optimization
(D) Improved SEO

41. What is database indexing used for?
(A) Faster query performance
(B) Slower load time
(C) Larger database size
(D) Theme optimization

42. What does “hotlink protection” prevent?
(A) Other sites using your images and bandwidth
(B) Database queries
(C) Plugin updates
(D) SEO indexing

43. Which hosting environment is most optimized for WordPress?
(A) Managed WordPress hosting
(B) Shared hosting
(C) Free hosting
(D) VPS hosting without optimization

44. Which caching type reduces server requests by storing data in the browser?
(A) Browser caching
(B) Object caching
(C) Page caching
(D) Opcode caching

45. Which CDN provider is popular for WordPress?
(A) Cloudflare
(B) Dropbox
(C) Google Drive
(D) OneDrive

46. What is the role of DNS prefetching?
(A) Resolves domain names faster for external resources
(B) Optimizes images
(C) Compresses CSS
(D) Caches posts

47. Which plugin helps optimize JavaScript loading?
(A) Async JavaScript
(B) Elementor
(C) WooCommerce
(D) Contact Form 7

48. Which performance metric measures when the first visual content is displayed?
(A) First Contentful Paint (FCP)
(B) SEO Score
(C) Page Size
(D) Database Indexing

49. What does reducing server response time improve?
(A) TTFB (Time to First Byte)
(B) SEO only
(C) Plugin count
(D) Database size

50. What is the ultimate goal of WordPress performance optimization?
(A) Faster page load, better user experience, and improved SEO
(B) More plugins
(C) Bigger database size
(D) Heavy themes