A Photo-Sharing Site Delivers Content Worldwide from a Library on Amazon

question 933

Multiple Choice

A photo-sharing site delivers content worldwide from a library on Amazon S3 using Amazon CloudFront. Users are trying to access photos that either do not exist or they are not authorized to view. What should be monitored to better understand the extent of this issue?

• A) GetRequests S3 metric on Amazon CloudWatch GetRequests S3 metric on Amazon CloudWatch
• B) 4XXErrorRate CloudFront metric on CloudWatch 4XXErrorRate CloudFront metric on CloudWatch
• C) 5XXErrorRate CloudFront metric on CloudWatch 5XXErrorRate
• D) PostRequests S3 metric on CloudWatch PostRequests S3 metric on CloudWatch

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Definitions:

Control Limits

The boundaries in a control chart within which a process operates satisfactorily and is considered in control. These include both upper and lower limits.

Sample Size

The number of observations or data points that are selected from a population for analysis in a study.

Nominal Specification

A detailed description of product or project requirements, including characteristics and constraints, that a solution must meet.

Expected Value

The average of all possible outcomes of a random variable, weighted by their probabilities.