Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 86 discussion

A. Use Amazon S3 with cross-Region replication enabled. After 30 days, transition the data to Amazon S3 Glacier using lifecycle policy as it should be retrieved within 4 hours

B & D - Irrelevant. CORS is about resource sharing in the context web hosting. CORS is a mechanism that allow you to override 'same-origin-policy' of browsers which prevent scripts of one origin to access private data hosted on anohter origin. Refer the link 1 for more details. However in simple terms for security, in a web page hosted by http://b1.com, any AJAX call with 'COOKIES'(credential) to any other host will be blocked. http://b1.com/index.html makes javascript call to http://b2.com/image.png (imp: with COOKIES), the call will be blocked by browser. This is a problem if you want to serve your website from two different host or S3 buckets. And to solve it you can configure CORS but it is irrelevant to question here. A or C - recommended by Amazon: Use Deep archive when data is accessed at most twice a year with latencies of 12 to 48 hours. The question demands data within 4 hours. Correct answer is A 1- https://www.youtube.com/watch?v=KaEj_qZgiKY

A is the answer

There is no other suitable option as after archiving, data is needed in 4 hours or less time.

glacier ======== 1 min -12 hours Expedite: 1 min- 5 min Standard: 3 hours - 5 hours Bulk: 5 hours - 12 hours deep archive ============ 12 hours - 48 hours

A is correct

Answer A: Each record must be stored for 7 years + immediately for the first 30 days and then within 4 hours of a request thereafter...Deep Archieve takes up to 12 hours so it shouldn't be a choice

Answer is A: Key take aways: 1. Compliance requires that multiple copies be stored in different locations ( for disaster recovery ) 2. Immediate access for the first 30 days ( Standard ). 4 hours thereafter ( Glacier standard ( requires 3-5 hours of retrieval time ) Note: Glacier deep archive requires 48 hours of retrieval time.

A. Glacier with Standard Retrieval will be used.

Even though Glacier Deep Archive is cheaper, it can't bring information within 4 hours. so we have to pick just glacier so answer is A

B and D are out; cross-origin resource sharing (CORS) is not applicable to the question Between A and D, D is wrong since Deep Archive wont let you access your data within 4 hours Answer is A

A for sure due to 12 hours min required for Deep archive

it's A

Ans = A

A right

Ans is A

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