How many rules are there in the YSlow version 2.0?
A. 23
B. 21
C. 27
D. 33
Answer: Option A
Solution(By Examveda Team)
There are totally 23 rules in the ruleset of YSlow (V2) namely :1. Minimize HTTP Requests
2. Use a Content Delivery Network
3. Avoid empty src or href
4. Add an Expires or a Cache-Control Header
5. Gzip Components
6. Put StyleSheets at the Top
7. Put Scripts at the Bottom
8. Avoid CSS Expressions
9. Make JavaScript and CSS External
10. Reduce DNS Lookups
11. Minify JavaScript and CSS
12. Avoid Redirects
13. Remove Duplicate Scripts
14. Configure ETags
15. Make AJAX Cacheable
16. Use GET for AJAX Requests
17. Reduce the Number of DOM Elements
18. No 404s
19. Reduce Cookie Size
20. Use Cookie-Free Domains for Components
21. Avoid Filters
22. Do Not Scale Images in HTML
23. Make favicon.ico Small and Cacheable
Related Questions on Performance Measures
How do we define the term Thread?
A. Device that controls input
B. Variable that controls movement
C. Controlled execution of applications
D. All of the mentioned
What does the browser do to set up a TCP/IP connection?
A. TCP one-way handshake
B. TCP two-way handshake
C. TCP three-way handshake
D. None of the mentioned
What does the handshake pass between the browser and the remote server?
A. Synchronize
B. Accept
C. Reject
D. Decline
How does the handshake help the server?
A. Acknowledge
B. Accept the attempt
C. Both Acknowledge and Accept the attempt
D. None of the mentioned
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