In regard to DynamoDB, can I modify the index once it is created?
A.
Yes, if it is a primary hash key index
B.
Yes, if it is a Global secondary index
C.
No
D.
Yes, if it is a local secondary index
Explanation:
Currently, in DynamoDB, an index cannot be modified once it is created.
http://aws.amazon.com/dynamodb/faqs/#security_anchor
Correct answer is B. See https://aws.amazon.com/de/dynamodb/faqs/#gsi_anchor
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B. You can modify Global Secondary index after creation.
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C
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Q. Can I change Global Secondary Indexes after a table has been created?
Yes, Global Secondary Indexes can be changed at any time, even after the table has been created.
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Option B is correct, you can modify global secondary indexes
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https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/GSI.OnlineOps.html#GSI.OnlineOps.Creating.Modify
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B
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B – AWS now allows you to modify global secondary indexes after creation
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