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Amazon AWS Certified Solutions Architect Associate remix > CDN > Flashcards

Flashcards in CDN Deck (14)
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1
Q

What is AWS CloudFront?

A

Amazon CloudFront is a global content delivery network (CDN) service that accelerates delivery of your websites, APIs, video content or other web assets.

2
Q

Does an CloudFront Edge location is related to an AZ?

A

No.

3
Q

What is an Edge Location?

A

Is the location where content will be cached. This is separate to an AWS Region/AZ.

4
Q

What is an origin in CloudFront?

A

Is the source of the files that the CDN will distribute: S3 bucket, EC2 instance, ELB or Route53

5
Q

What type of CloudFront distribution exists?

A

Web distribution

RTMP

6
Q

What is the format of an CloudFront url?

A

http://f1g42olgu3q9vj.cloudfront.net/fileName

7
Q

What is a CloudFront Distribution?

A

It’s the name given the CDN which consists of a collection of Edge Locations.

8
Q

Is it possible to have only one or multiple origins for an Edge Location?

A

It is possible to have multiple origins

9
Q

How much time is an object cached in an Edge Location?

A

For the life of the TTL

10
Q

Can you clear an Edge Location cache? What impact does it have in terms of cost?

A

You can clear cached objects, but you will be charged.

11
Q

Are Edge Locations read-only?

A

No. You can write to them too.

12
Q

How can you protect resources using CloudFront?

A

Using signed URL’s with expiry dates or signed cookies

13
Q

How can objects be prevented from being cached?

A

Creating invalidations

14
Q

Can I prevent users from specific countries to access resources?

A

Yes, with Geo-Restrictions.