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Question 237 - SCS-C01 discussion

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You are hosting a web site via website hosting on an S3 bucket - http://demo.s3-website-us-east-l.amazonaws.com. You have some web pages that use Javascript that access resources in anotherbucket which has web site hosting also enabled. But when users access the web pages , they aregetting a blocked Javascript error. How can you rectify this? Please select:

A.
Enable CORS for the bucket
Answers
A.
Enable CORS for the bucket
B.
Enable versioning for the bucket
Answers
B.
Enable versioning for the bucket
C.
Enable MFA for the bucket
Answers
C.
Enable MFA for the bucket
D.
Enable CRR for the bucket
Answers
D.
Enable CRR for the bucket
Suggested answer: A

Explanation:

Your answer is incorrect

Answer-A

Such a scenario is also given in the AWS Documentation Cross-Origin Resource Sharing: Use-case Scenarios The following are example scenarios for using CORS:

• Scenario 1: Suppose that you are hosting a website in an Amazon S3 bucket named website as described in Hosting a Static Website on Amazon S3. Your users load the website endpoint http://website.s3-website-us-east-1 .amazonaws.com. Now you want to use JavaScript on the webpages that are stored in this bucket to be able to make authenticated GET and PUT requests against the same bucket by using the Amazon S3 API endpoint for the bucket website.s3.amazonaws.com. A browser would normally block JavaScript from allowing those requests, but with CORS you can configure your bucket to explicitly enable cross-origin requests from website.s3-website-us-east-1 .amazonaws.com.

• Scenario 2: Suppose that you want to host a web font from your S3 bucket. Again, browsers require a CORS check (also called a preflight check) for loading web fonts. You would configure the bucket that is hosting the web font to allow any origin to make these requests.

Option Bis invalid because versioning is only to create multiple versions of an object and can help in accidental deletion of objects Option C is invalid because this is used as an extra measure of caution for deletion of objects Option D is invalid because this is used for Cross region replication of objects For more information on Cross Origin Resource sharing, please visit the following URL • ittps://docs.aws.amazon.com/AmazonS3/latest/dev/cors.html

The correct answer is: Enable CORS for the bucket

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asked 16/09/2024
rafael Flores
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