Question 120
A professional architect is reviewing two independent workstreams. Requirement A: Finance needs engineering costs apportioned by team using tags rather than guessed from account totals. Requirement B: Six VPCs in three accounts need private east-west connectivity without an O(N²) peering mesh. Which TWO responses resolve the stated issues without substituting unrelated mechanisms?
Explanation
Correct Answers
This action meets the independently stated requirement A: Finance needs engineering costs apportioned by team using tags rather than guessed from account totals. Cost allocation tags must be activated before they appear in billing cost analytics. A direct acceptance check is: Cost and Usage Reports or Cost Explorer show tagged team spend after activation and reporting delay.
This action meets the independently stated requirement B: Six VPCs in three accounts need private east-west connectivity without an O(N²) peering mesh. Transit Gateway supplies centralized transitive VPC connectivity when attachment route tables and security policies are configured. A direct acceptance check is: Approved application subnets reach each other through Transit Gateway routes and unauthorized segments remain isolated.
Incorrect Answers
This action targets a different technical need: Many workload VPCs need access to a privately published service without opening routing to the provider's whole VPC. It does not replace either required solution in A or B. AWS PrivateLink exposes a selected service to consumers without full network-to-network reachability; verify the two stated requirements independently rather than accepting an unrelated change.
This action targets a different technical need: Legal and nonproduction workloads require different organizational guardrails but must share central billing. It does not replace either required solution in A or B. Organizational units help assign governance boundaries to related member accounts; verify the two stated requirements independently rather than accepting an unrelated change.
This action targets a different technical need: Dozens of overprovisioned EC2 instances need evidence-based CPU and memory sizing recommendations before changing families. It does not replace either required solution in A or B. Compute Optimizer uses resource metrics and recommendations but must be checked against workload SLOs; verify the two stated requirements independently rather than accepting an unrelated change.