PAS-C01 Design of SAP Workloads on AWS Practice Question
A company is planning to migrate their SAP system to AWS. They need to ensure that the SAP application servers and database servers are in the same AWS Region but in different Availability Zones for high availability. The network latency between Availability Zones must be minimal. Which AWS service should be used to connect the instances?
⚠ Common exam trap
The trap here is that candidates may overcomplicate the solution by choosing VPC Peering or Transit Gateway, not realizing that a single VPC inherently spans multiple AZs and provides the required low-latency connectivity without additional services.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use the default VPC network within the same VPC spanning multiple Availability Zones
A single VPC can span multiple Availability Zones within the same AWS Region, and by default, instances in different AZs within the same VPC communicate over the AWS private network with low latency, typically under 1-2 ms. This meets the requirement for minimal latency between SAP application and database servers while keeping them in the same Region for high availability.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Set up VPC Peering between the Availability Zones
Why it's wrong here
VPC Peering is not needed within a single VPC.
- ✗
Establish an AWS Direct Connect connection
Why it's wrong here
Direct Connect is for on-premises connectivity.
- ✓
Use the default VPC network within the same VPC spanning multiple Availability Zones
Why this is correct
Instances in the same VPC across AZs communicate over AWS's low-latency network.
- ✗
Use AWS Transit Gateway to connect the subnets
Why it's wrong here
Transit Gateway is for multiple VPCs, not needed within one VPC.
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