AWS Certified Solutions Architect – Professional — Question 151

The user has provisioned the PIOPS volume with an EBS optimized instance.
Generally speaking, in which I/O chunk should the bandwidth experienced by the user be measured by AWS?

Answer options

• A. 128 KB
• B. 256 KB
• C. 64 KB
• D. 32 KB

Correct answer: B

Explanation

AWS measures the bandwidth for EBS optimized instances using a standard I/O chunk size of 256 KB. This is the size that allows for optimal performance and efficiency when dealing with provisioned IOPS. The other options, while they represent valid chunk sizes, do not align with the typical measurement metrics used by AWS for this scenario.