Design High-Performing Architectures
This domain carries 24% of the SAA-C03 exam. Practise it with original questions that explain every answer option.
- Certification
- SAA-C03
- Exam weight
- 24%
- Subdomains
- 5
- Objectives
- 30
What this domain covers
Example question from this domain
A Regional Amazon EFS file system, mounted with a current amazon-efs-utils client, supports an analysis workload whose throughput changes unpredictably between 20 MiB/s and 450 MiB/s.
• `BurstCreditBalance` repeatedly reaches zero.
• `PercentIOLimit` remains below 35%.
• The team has no stable throughput target and wants capacity to follow activity without setting a fixed rate.
Which configuration best matches the evidence?
- Use General Purpose performance mode with Elastic Throughput.
- Use General Purpose performance mode with 450 MiB/s of Provisioned Throughput.
- Use General Purpose performance mode with Bursting Throughput.
- Create a Max I/O file system with 450 MiB/s of Provisioned Throughput.
Use General Purpose performance mode with Elastic Throughput. — Elastic Throughput automatically scales with workload activity and does not accrue or consume burst credits. The low `PercentIOLimit` shows that General Purpose operation capacity is not the limiting dimension.
Use General Purpose performance mode with 450 MiB/s of Provisioned Throughput. — A 450-MiB/s provisioned setting can cover the observed peak, but AWS recommends Provisioned Throughput when performance requirements are known. This workload is unpredictable and explicitly lacks a stable target.
Use General Purpose performance mode with Bursting Throughput. — Bursting Throughput derives sustained capacity from the amount stored in EFS Standard and uses credits above that baseline. The repeated zero balance is direct evidence that the current mode does not sustain the peaks.
Create a Max I/O file system with 450 MiB/s of Provisioned Throughput. — `PercentIOLimit` below 35% shows substantial headroom under the General Purpose I/O limit. Max I/O is a previous-generation mode with higher per-operation latency, while the workload needs an activity-responsive throughput mode.
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