Customer Support Team - Take Home Test

Question 1: Site Down
Description: "I am having trouble reaching my website http://example.com/ from different networks. Are your nameservers working properly?"
Question 2: Site from California
Description: "Why is my site coming from California?!"
Question 3: Workers Not Applied
Description: "I've just added a Worker on the Cloudflare Dashboard for my website: it works in the debugger but doesn't work when I query the site. Why is that? Is there anything to activate or anything I could check?"
Question 4: Cloudflare Nameservers
Description: "How are Cloudflare's nameservers different from the DNS provided by Google DNS or OpenDNS? Can I delegate to Cloudflare nameservers while still using my host’s DNS?"
Question 5: Content Not Cached
Description: "After activating Cloudflare on my site, I am seeing that resources on my pages are not being cached: [curl output] Why is Cloudflare’s caching not working on my site?"
Question 6: Redirection by User Agent
Description: "I want to redirect visitor with specific user agent (*MSIE 8.0* for example) to a different page. It seems this is not possible with Cloudflare Page Rules. Is there any other way to achieve that using Cloudflare?"