PeopleCert DevOps-SRE Exam With Confidence Using Practice Dumps

Comprehensive and Detailed Explanation From Exact Extract:

Customer Reliability Engineering (CRE) is described in Google's SRE literature as an extension of SRE practices outward to customers who run workloads on cloud platforms. The SRE Book and the SRE Workbook state: “CRE is the practice of sharing SRE principles with customers, working closely with their operations teams, and establishing shared responsibility for reliability.” (SRE Workbook – Chapter: Customer Reliability Engineering). A CRE team collaborates directly with customer engineering and operations teams to identify reliability risks, review architectures, and co-manage SLOs, but does not redesign cloud services or build new features.

Option D matches the exact intention: CRE integrates with the customer’s operations team to share reliability responsibilities, applying SRE methods to customer systems and ensuring both customer and provider work jointly on reliability goals.

Option A is incorrect—CRE does not redesign cloud services.

Option B misinterprets CRE as improving the provider’s internal systems.

Option C incorrectly focuses on feature shipping; CRE is about reliability guidance, not feature delivery.

Thus, D is the correct and SRE-authentic answer.

Comprehensive and Detailed Explanation From Exact Extract:

Error budgets are a fundamental SRE mechanism for balancing reliability and innovation. The SRE book states: “The error budget directly governs the rate of change: as long as the service stays within budget, development velocity can remain high.” (SRE Book – Chapter: Service Level Objectives). This means teams can push changes aggressively as long as the allowed amount of unreliability has not been consumed.

The error budget acts as a safety threshold. When reliability dips and the error budget is consumed, SRE enforces a change freeze to restore stability. Google explains: “If the error budget is spent, releases are halted and efforts focus on improving reliability.” Feature velocity is not arbitrarily slowed—it is governed solely by the remaining error budget.

Option A best expresses this: when the error budget is high, teams can safely accelerate feature delivery.

Option D incorrectly suggests rushing, which contradicts controlled release practices.

Option B misinterprets error budgets as a percentage-based throttling system.

Option C incorrectly implies that innovation stops entirely only when empty.

Thus, A is the correct interpretation according to official SRE principles.

Comprehensive and Detailed Explanation From Exact Extract:

The future growth envelope refers to the anticipated growth trajectory of a service, including expected load, user demand, data volume, and performance requirements. Planning for this growth is essential to ensuring that a service can scale reliably without violating SLOs.

The Site Reliability Engineering Book, in discussions on capacity planning, states:

“A key element of capacity planning is estimating future demand so that systems can scale to meet user needs without sacrificing reliability.”

The SRE Workbook reinforces this concept:

“Understanding expected growth enables teams to design systems that scale and remain reliable as usage increases.”

Having the growth envelope defined enables:

Proper capacity planning

Avoiding resource exhaustion

Ensuring scalability before it becomes a reliability problem

Designing architectures that can handle future load

Why the other options are incorrect:

A Signed artifacts relate to supply chain security, not scaling.

C SLO/SLI reviews do not require growth envelope analysis.

D Error budgets relate to reliability thresholds, not capacity forecasting.

Thus, B is the correct answer.