Easy1 markMultiple Choice
Subtask 5.2: ReliabilitySRESLOError BudgetsCase Study
This question is part of a case study — click to read the full scenario(Case 16)

CASE STUDY: MediSecure
Overview: Telehealth provider, 1500 employees, $300M revenue. Core app on AWS, 3 acquired clinics on VMware, fragmented EHRs, Active Directory.
Business Req: Unify patient records, integrate clinics in 90 days, launch patient portal.
Execs: CEO wants rapid integration; CFO wants CapEx to OpEx; CISO demands strict HIPAA/GDPR compliance.
Tech Req: End-to-end PHI encryption, comprehensive audit logging, hybrid connectivity to clinics, DR (RPO 5m, RTO 1h).
Constraints: Clinics have low bandwidth, high staff turnover requires automated IAM, legacy EHRs cannot be modified immediately.

QUESTION:
To meet the 90-day integration timeline and address the low bandwidth at the clinics, how should you establish hybrid connectivity to GCP?

GCP PCA · Question 20 · Reliability

CASE STUDY: MediSecure
Overview: Telehealth provider, 1500 employees, $300M revenue. Core app on AWS, 3 acquired clinics on VMware, fragmented EHRs, Active Directory.
Business Req: Unify patient records, integrate clinics in 90 days, launch patient portal.
Execs: CEO wants rapid integration; CFO wants CapEx to OpEx; CISO demands strict HIPAA/GDPR compliance.
Tech Req: End-to-end PHI encryption, comprehensive audit logging, hybrid connectivity to clinics, DR (RPO 5m, RTO 1h).
Constraints: Clinics have low bandwidth, high staff turnover requires automated IAM, legacy EHRs cannot be modified immediately.

QUESTION:
To ensure the reliability of the new patient portal, the operations team wants to implement SRE practices. How should they define when it is safe to release new features?

Answer options:

A.

Release features only when the system achieves 100% uptime for a month.

B.

Establish Service Level Objectives (SLOs) and use an Error Budget to dictate release velocity.

C.

Rely on the QA team to manually test all features in production before releasing.

D.

Implement Chaos Engineering to break the system daily.

How to approach this question

Identify the core SRE metric used to balance reliability with feature velocity.

Full Answer

B.Establish Service Level Objectives (SLOs) and use an Error Budget to dictate release velocity.✓ Correct
Establish Service Level Objectives (SLOs) and use an Error Budget to dictate release velocity.
In SRE, an Error Budget is derived from the SLO (e.g., if SLO is 99.9%, the error budget is 0.1%). As long as the error budget is not exhausted, the team can safely release new features. If it is exhausted, releases are frozen until reliability improves.

Common mistakes

Aiming for 100% uptime (A), which SRE explicitly advises against as it stifles innovation.

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