CloudFront

Question 1

What is a Content Delivery Network?

Answer 1

A Content Delivery Network is a system of distributed servers that deliver web content to a user based on the geographic locations of the user, the origin of the webpage, and a content delivery space.

Question 2

In the context of CloudFront, what is a Distribution?

Answer 2

the name given to the CDN, which consists of a collection of edge locations

Question 3

Are edge locations read-only?

Answer 3

No. You can write to an edge location too!

Question 4

Why is Amazon CloudFront good for performance?

Answer 4

Geographic Cacheing. Requests for your content are automatically routed to the nearest edge location, so content is delivered with best performance possible.

Question 5

What does RTMP stand for?

Answer 5

Real-Time Messaging Protocol

Question 6

What are the 2 types of distributions used for CloudFront?

Answer 6

• Web Distribution - for websites
• RTMP - for media streaming

Question 7

Can you clear cached objects in an edge location?

Answer 7

Yes, but you will be charged. (Invalidating the Cache)

Question 8

In the context of CloudFront, what is the Time To Live?

Answer 8

How long objects are cached in an edge location.

This is a configurable amount.

Question 9

What does TTL stand for?

Answer 9

Time To Live

Question 10

What are the areas for which you are charged in CloudFront?

Answer 10

• Data Transfer Out
  
  • To the internet from the edge locations
  • from cloudfront to the origin server
• Requests
  
  • HTTP/HTTPs
  • Origin Shield
  • Invalidation
  • Field Level Encryption
  • Real-Time Log
• Dedicated IP Custom SSL certificates associated with a Cloudfront Distribution

Question 11

Suppose you have specific items in CloudFront that you want to keep in the cache longer than normal. How can you accomplish this?

Answer 11

Utilize a Cache-Control header for these items