Which of the following are pre-requisites for enabling cross region replication between S3 buckets.
Choose 2 answers from the options given below.
Click on the arrows to vote for the correct answer
A. B. C. D.Answer - A and C.
The AWS documentation mentions the following.
Requirements for cross-region replication:
1)The source and destination buckets must have versioning enabled.
2)The source and destination buckets must be in different AWS Regions.
For more information on cross region replication please see the below link:
http://docs.aws.amazon.com/AmazonS3/latest/dev/crr.htmlThe correct answers are A and C.
Cross-Region Replication (CRR) is a feature of Amazon S3 that allows you to replicate objects automatically between S3 buckets in different AWS Regions. This can help you achieve low-latency data access, comply with data protection regulations, and reduce the impact of regional outages.
In order to enable CRR between S3 buckets, there are some prerequisites that need to be met:
A. The source and destination buckets must have versioning enabled: Before you can replicate objects between buckets, you must enable versioning on both the source and destination buckets. Versioning tracks all versions of an object, allowing you to recover previous versions in case of accidental deletion or corruption. It is required for CRR to function properly because S3 uses versioning to identify changes to objects that need to be replicated.
B. The source and destination buckets must have MFA enabled: This statement is incorrect. Multi-Factor Authentication (MFA) is not a prerequisite for CRR. MFA is an additional security measure that requires users to provide two forms of authentication (typically a password and a code generated by a hardware or software token) to access certain AWS resources.
C. The source and destination buckets must be in different AWS Regions: For CRR to work, the source and destination buckets must be in different AWS Regions. This is because CRR copies objects asynchronously between regions, and it is not possible to replicate objects to a bucket in the same region. Additionally, the regions must be configured to use the same AWS account.
D. The source and destination buckets must be in different AWS AZ's: This statement is incorrect. Availability Zones (AZs) are isolated locations within an AWS Region that are designed to provide high availability and fault tolerance. However, they are not relevant to CRR, as replication occurs between different regions, not within the same region.
In summary, to enable cross-region replication between S3 buckets, you need to enable versioning on both the source and destination buckets, and ensure that the buckets are located in different AWS Regions.