Free Practice Questions for PeopleCert DevOps-SRE Exam

Comprehensive and Detailed Explanation From Exact Extract:

Containers provide a major advantage that aligns with SRE: portability and environment consistency. The SRE Workbook describes containers as: “lightweight, portable units that encapsulate applications and dependencies, ensuring consistent behavior across environments.” This independence from the host OS environment enables predictable deployments and simplifies automation, scaling, and orchestration—especially when used with Kubernetes.

Option A captures this exact benefit: portability and independence from the host OS.

Option B is incorrect—containers do not reduce the number of developers required.

Option C incorrectly claims that efficiency comes from virtual machines; containers are typically more efficient because they avoid VM overhead, not leverage it.

Option D is incorrect—containers do not “inherit” security automatically; in fact, they require additional security controls.

Thus, A is the correct answer.

Comprehensive and Detailed Explanation From Exact Extract:

SRE and DevOps share a common view of continuous monitoring—a holistic approach that enables rapid detection, diagnosis, and response across all parts of the system. The SRE Book states: “Monitoring must enable fast detection of anomalies, quick diagnosis, and effective incident response.” Continuous monitoring includes application metrics, infrastructure signals, logs, traces, service health, and user-experience telemetry.

Option B captures this accurately: a combination of tools and processes enabling rapid incident detection and response, especially for cloud services.

Option A is partially correct but too narrow (only end-user transactions).

Option C is generic and does not emphasize continuous or rapid detection.

Option D describes infrastructure monitoring only—not full DevOps/SRE continuous monitoring.

Thus, B is the correct answer.

Comprehensive and Detailed Explanation From Exact Extract:

Application Performance Management (APM) refers to a set of tools and practices used to monitor and manage the performance, behavior, and availability of software applications. Although APM is not defined exclusively in the Google SRE Book, it is described within the broader context of monitoring and observability.

In the SRE Workbook, under Monitoring:

“Application monitoring tools provide insights into the performance, latency, availability, and behavior of applications to help engineering teams maintain reliability.”

Industry-standard APM frameworks (including Google Cloud Operations Suite, formerly Stackdriver) define APM as:

“The monitoring and management of application performance and availability.”

Why the other options are incorrect:

A describes telemetry, not APM.

C describes system monitoring (infrastructure), not application performance monitoring.

D refers to communication of metrics, not the monitoring of application performance.

Therefore, B is the correct definition.

Comprehensive and Detailed Explanation From Exact Extract:

One of SRE’s strengths is using software engineering and automation to reduce manual, process-heavy work. This aligns perfectly with ITSM goals around repeatability, compliance, and quality.

The SRE Workbook, section “SRE and ITIL Integration,” explains:

“SRE can complement ITSM by applying automation and engineering practices to reduce manual process load, increase consistency, and meet compliance requirements.”

Examples include:

Automating change processes

Automating incident response flows

Improving configuration consistency

Reducing ticket-driven toil through engineering

Why the other options are incorrect:

A CAB approvals are not governed by error budgets

C Ticket acceleration is not the goal of SRE

D Engineering CMDBs is not the primary mechanism for ITSM alignment

Thus, B is correct.