Q. What are some reasons to enable cross-region replication on an Amazon Simple Storage Service (Amazon S3) bucket?
A. Cross-region replication can help lower latency and satisfy compliance requirements on distance. Amazon S3 is designed for eleven nines durability for objects in a single region, so a second region does not significantly increase durability. Cross-region replication does not protect against accidental deletion.
Q. You need data sent to external storage be encrypted before sent. Which Amazon Simple Storage Service (Amazon S3) encryption solution will meet this requirement?
A. client-side encryption must be used, If data must be encrypted before being sent to Amazon S3.
Q. You have a popular web application that accesses data stored in an Amazon Simple Storage Service (Amazon S3) bucket. You expect the access to be very read-intensive, with expected request rates of up to 500 GETs per second from many clients. How can you increase the performance and scalability of Amazon S3 in this case?
A. Amazon S3 scales automatically, but for request rates over 100 GETS per second, it helps to make sure there is some randomness in the key space. Replication and logging will not affect performance or scalability. Using sequential key names could have a negative effect on performance or scalability.
Q. What is needed before you can enable cross-region replication on an Amazon Simple Storage Service (Amazon S3) bucket?
A. You must enable versioning before you can enable cross-region replication, and Amazon S3 must have IAM permissions to perform the replication. Lifecycle rules migrate data from one storage class to another, not from one bucket to another.
Static website hosting is not a prerequisite for replication.
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