A Developer Is Writing a Web Application That Must Share

question 85

Multiple Choice

A developer is writing a web application that must share secure documents with end users. The documents are stored in a private Amazon S3 bucket. The application must allow only authenticated users to download specific documents when requested, and only for a duration of 15 minutes. How can the developer meet these requirements?

• A) Copy the documents to a separate S3 bucket that has a lifecycle policy for deletion after 15 minutes.
• B) Create a presigned S3 URL using the AWS SDK with an expiration time of 15 minutes.
• C) Use server-side encryption with AWS KMS managed keys (SSE-KMS) and download the documents using HTTPS.
• D) Modify the S3 bucket policy to only allow specific users to download the documents. Revert the change after 15 minutes.

---

Definitions:

Probability Distribution

A statistical function that describes all the possible values and likelihoods that a random variable can take within a given range.

Stock's Expected Return

The anticipated return on a stock, combining both the dividend payments and capital gains, based on historical data and future projections.

State Of Economy

The overall condition of a country's economic system, considering factors like growth rates, employment levels, inflation, and economic policies.

Aggregate Demand Curve

A curve that shows the relationship between the overall price level and total demand for goods and services in an economy.