DevOps-SRE Exam Dumps : Site Reliability Engineering (SRE) Foundation v1.2

Comprehensive and Detailed Explanation From Exact Extract:

Fixed error budgets are preferred in SRE because they encourage smaller, safer, and more predictable releases, which inherently reduces risk. A fixed budget forces the team to consistently evaluate how much reliability they can afford to trade for delivery speed each month or quarter.

From the Site Reliability Engineering Book, Chapter “Service Level Objectives”:

“Error budgets allow teams to make controlled decisions about the risk they take on. A fixed budget naturally encourages teams to release in smaller batches, which reduces the overall risk and impact of a failure.”

Similarly, the SRE Workbook states:

“When teams work within a fixed error budget, they tend to push changes in smaller increments to avoid burning the budget too quickly.”

Why the other options are incorrect:

A Fixed budgets reduce toil by reducing firefighting, not increase it.

C Fixed budgets can be exceeded; this is not a reason they are beneficial.

D Error budgets do not predict outages; they measure tolerated unreliability.

Thus, the correct and SRE-supported answer is B.

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:

SRE defines effective monitoring as comprehensive observability across all layers of a system, including latency, traffic, errors, saturation, dependencies, and infrastructure. The SRE Book states: “Monitoring must offer insight across all system components, enabling teams to rapidly detect and diagnose issues.” (SRE Book – Monitoring Distributed Systems). Observability instrumentation (logs, metrics, traces) provides the necessary depth for reliable digital experience monitoring.

Option B captures this exactly: broad observability across all components and layers.

Option A rejects modern observability practices—contradicting SRE guidance.

Option C is too narrow (network-only).

Option D focuses only on advanced technologies, not comprehensive coverage.

Thus, B is the best answer.