Free SAA-C03 Questions Attempt

Comprehensive and Detailed Explanation:

Amazon RDS for MySQL supports the creation of read replicas, which are read-only copies of the primary database instance. By offloading read-heavy operations, such as reporting queries, to a read replica:

Performance Improvement: The primary DB instance is relieved from the additional load, reducing the likelihood of timeouts during order processing.

Data Consistency: Read replicas use asynchronous replication, ensuring that they have up-to-date data for accurate reporting.

Scalability: Multiple read replicas can be created to handle increased read traffic.

This approach allows employees to continue running necessary reports without impacting the performance of the ordering application.

Amazon S3 Express One Zone provides single-digit millisecond latency and high throughput, making it ideal for ML workloads that require multiple compute nodes and fast access. It is also more cost-effective than traditional file or block storage for temporary, high-speed needs.

Comprehensive and Detailed Explanation From Exact Extract of Amazon Web Services (AWS) Architect documents:

The best practice for securely accessing AWS services from EC2 instances is to use IAM roles associated with the instance profile.

"Applications must securely access AWS resources. The recommended way is to attach an IAM role to your EC2 instance and use temporary credentials."

— IAM Roles for Amazon EC2

IAM roles:

Provide temporary, automatically rotated credentials.

Avoid hardcoding credentials.

Ensure least privilege access.

Incorrect Options:

A: Root credentials should never be used programmatically.

B: Using static access keys is not secure.

D: MFA and versioning help with object security but don’t handle programmatic access.

S3 Object Lock in Compliance Mode prevents objects from being deleted or overwritten for a fixed, specified retention period. Compliance Mode is specifically designed to meet regulatory requirements, ensuring that no user, including the root user, can modify or delete the object during the retention period.

Reference Extract:

"S3 Object Lock in compliance mode protects objects from being deleted or overwritten during the specified retention period, helping meet regulatory retention requirements."

Source: AWS Certified Solutions Architect – Official Study Guide, S3 Object Lock and Compliance section.