A global media firm is using Amazon CloudFront to deliver content stored in the Amazon S3 bucket. The Operations Team needs to have Amazon CloudFront logs in seconds to analyze requests made to the CloudFront distribution. Limited Budget is assigned to this project & needs to have a cost-effective solution for capturing these logs.
What can be configured to meet this requirement?

Answer options:

A.Configure Sampling rate for standard logs as 100.
B.Configure Sampling rate for real-time logs as 50.
C.Configure Sampling rate for real-time logs as 100.
D.Configure Sampling rate for standard logs as 50.

Correct Answer: B
Amazon CloudFront provides two types of logs.
Standard Logs:Delivers detailed records of the request made to the distribution to Amazon S3 bucket & logs are not chargeable.
Real-Time Logs: Delivers logs of the specific fields chosen by the user in seconds using Amazon Kinesis Data Streams & are chargeable.
With the Sampling rate, the percentage of the requests for which real-time logs will be received can be controlled. In the above case, to reduce cost, clients can configure the sampling rate as 50% to get logs in seconds only for 50% of the requests.
Options A & D are incorrect as with standard logs, logs are not delivered in seconds.
Option C is incorrect as with the sampling rate at 100, all requests will be delivered in seconds which will incur additional costs for logs.
For more information on Amazon CloudFront Logs, refer to the following URLs,
https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/logging.html
https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/real-time-logs.html