Checkpoint: Building Something Real

Question 1 of 5

• Any CloudFront distribution, including one in another AWS account, could be pointed at the bucket and read it.
• Visitors could upload files to the bucket through CloudFront.
• CloudFront would stop caching the files.
• Block Public Access would be turned off automatically.

Question 2 of 5

• Block Public Access must be turned off for OAC to work.
• The certificate is not in us-east-1.
• The bucket policy has no statement allowing this distribution to call s3:GetObject.
• The objects were uploaded with a no-cache header.

Question 3 of 5

• To keep warm copies running so there are no cold starts.
• To make the function run faster under load.
• To reduce the price per invocation.
• To cap how many copies can run at once, limiting cost and protecting downstream services during a flood of requests.

Question 4 of 5

• The alarm fires, because missing data might hide an outage.
• Periods with no data count as healthy, so the alarm stays in the OK state.
• The alarm is deleted after a period with no data.
• The alarm switches to counting throttles instead.

Question 5 of 5

• Reliability
• Performance efficiency
• Sustainability
• Cost optimization