Free Peoplecert DevOps-SRE Test Practice Test Questions Exam Dumps
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NEW QUESTION # 36
How does chaos engineering as an anti-fragility strategy improve Mean Time to Recover Service?
- A. It creates automation for auto-recovery
- B. It optimizes monitoring tools making it more likely we will detect real incidents
- C. Caching data in the case of a database outage instead could mean the SLO is met
- D. It helps to identify weaknesses and dependencies pinpointing areas where more resilience may be required
Answer: D
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Chaos engineering is an SRE-aligned practice where systems are intentionally subjected to controlled failure scenarios so teams can observe how the system responds. This practice supports anti-fragility, meaning the system becomes stronger through exposure to failure.
The SRE Workbook, Chapter "Handling Overload" and Chaos Engineering sections, explains:
"Injecting failure in a controlled environment exposes the hidden dependencies, weaknesses, and systemic risks that only appear under stress." The Site Reliability Engineering Book reinforces this concept:
"By understanding how systems behave during partial failures, teams can make targeted improvements that reduce recovery time during real incidents." Improving Mean Time to Recover (MTTR) happens because:
* Weak points and bottlenecks are identified early
* Engineers gain familiarity with failure modes
* Systems are hardened ahead of actual outages
* Dependencies that cause cascading failures are revealed
Why other options are incorrect:
* B Monitoring optimization is helpful but not the core mechanism of chaos engineering.
* C Chaos engineering does not create auto-recovery automation; it reveals where it is required.
* D Caching is an architectural resilience strategy, not an outcome of chaos engineering itself.
Thus, A is the correct answer.
References:
SRE Workbook, "Chaos Engineering"
Site Reliability Engineering Book, "Managing Critical State"
NEW QUESTION # 37
The value of data-driven measurements can be MOST accurately explained by which of the following?
- A. Data mining enables an organization to determine the legitimacy of all metrics
- B. The garnering of data will provide an the necessary facts to enable better decisions
- C. An analysis and understanding of data helps to ensure fact-based decision-making
- D. Objectives can only be appropriately designed when based upon actual data
Answer: C
NEW QUESTION # 38
When applied to service levels, the principleof decreasing marginal productivity can be represented in three stages.Which of the following is NOT one of these stages?
- A. Diminishing returns
- B. Possible returns
- C. increasing returns
- D. Negative returns
Answer: B
NEW QUESTION # 39
The new SRE team is advocating against a fixed Error Budget.
Why are fixed Error Budgets better?
- A. Fixed Error Budgets are never exceeded
- B. They encourage working in smaller batches that reduces risk
- C. They create more toil
- D. They help predict outages
Answer: B
Explanation:
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.
References:
Site Reliability Engineering Book, "Service Level Objectives"
SRE Workbook, "Implementing SLOs"
NEW QUESTION # 40
Following a major outage, an analysis of the outage is conducted. This BEST describes an example of which of the following?
- A. A major incident culture
- B. A follow-up culture
- C. A postmortem culture
- D. A problem culture
Answer: C
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Google's SRE approach emphasizes a blameless postmortem culture as a core learning mechanism. After a major outage, SRE teams conduct structured analyses to understand the root causes, contributing factors, and systemic weaknesses. The SRE Book defines this culture explicitly: "Postmortems are written analyses following incidents, designed to capture what happened, why it happened, and how to prevent the issue from recurring." (SRE Book - Chapter: Postmortem Culture). This learning-focused approach reduces blame, increases resilience, and improves future reliability.
Option C aligns exactly with this principle.
Option A (follow-up culture) is vague and not an SRE term.
Option B (major incident culture) refers to incident handling, not learning afterward.
Option D (problem culture) is unrelated to SRE's structured post-incident learning.
Thus, C is correct.
References:
Site Reliability Engineering, Chapter: "Postmortem Culture: Learning From Failure." The Site Reliability Workbook, Incident Review processes.
NEW QUESTION # 41
Which of the following is the definition for Application Performance Management (APM)?
- A. The highly automated communications process by which measurements are made and other data collected at remote or inaccessible points and transmitted to receiving equipment for monitoring
- B. The use of a hardware or software component to monitor system resources and performance of a computer system
- C. Ways for engineers to communicate quantitative data about systems
- D. The monitoring and management of performance and availability of software applications
Answer: D
Explanation:
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.
References:
SRE Workbook, "Monitoring"
Google Cloud Operations Suite (APM documentation)
NEW QUESTION # 42
Which of the following is NOT a SRE principle?
- A. Toil is not important work
- B. Operations is a software problem
- C. Reduce the cost of failure
- D. Automate what is currently done manually
Answer: A
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
The statement "Toil is not important work" is NOT an SRE principle. This is incorrect based on the official Google SRE documentation. In the Site Reliability Engineering Book, toil is treated as a critical concept, because identifying and reducing toil directly enables reliability improvements and more engineering-focused work. The SRE book emphasizes that toil must be taken seriously and systematically reduced, but never dismissed.
From the SRE Book, Chapter "Eliminating Toil":
"Toil is the kind of work tied to running a production service that tends to be manual, repetitive, automatable, tactical, with no enduring value, and that scales linearly as a service grows." The SRE book further emphasizes:
"SRE teams should measure toil, track it, and make constant efforts to reduce it." This demonstrates that toil is significant and should not be ignored. Therefore, any suggestion that "toil is not important work" contradicts the documentation.
The other answer choices are actual SRE principles:
* Operations is a software problem - From SRE Book Introduction:"SRE's approach starts with the belief that operations is fundamentally a software engineering problem." Operations is a software problem - From SRE Book Introduction:"SRE's approach starts with the belief that operations is fundamentally a software engineering problem."
* Automate what is currently done manually - Automation is a central SRE philosophy to reduce toil.
* Reduce the cost of failure - Error budgets and controlled risk-taking are core SRE concepts designed to reduce the cost of failure.
Thus, the only option that is NOT an SRE principle is C.
References:
Site Reliability Engineering Book, "Introduction" and "Eliminating Toil" Chapters SRE Workbook, "Eliminating Toil" Section
NEW QUESTION # 43
Identify the missing word(s) in the following sentence:
Site reliability engineering is a _________ approach to IT operations.
- A. simulation engineering
- B. security engineering
- C. structural engineering
- D. software engineering
Answer: D
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Google's SRE definition is explicit: "Site Reliability Engineering is what happens when you ask a software engineer to design an operations team." (SRE Book - Introduction). This clearly defines SRE as a software engineering approach applied to operational problems. The goal is to use software techniques-automation, coding, testing, version control, CI/CD, observability-to improve reliability and reduce toil. The book emphasizes: "SRE applies software engineering to operations work." (SRE Book - What Is SRE?).
Option C is the only answer fully aligned with the official definition.
Options A, B, and D do not correspond to the SRE definition provided by Google.
Thus, the correct missing phrase is software engineering.
References:
Site Reliability Engineering: How Google Runs Production Systems, Introduction and Chapter: "What is SRE?"
NEW QUESTION # 44
In which of the following SRE adoption models is reliability a 'first class citizen'?
- A. Embedded
- B. Consulting
- C. Full
- D. Platform
Answer: C
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
In the Full SRE model, reliability becomes a first-class citizen because SREs own the complete operational responsibility for the service and apply SRE principles end-to-end. The Google SRE Book describes several adoption models (Consulting, Embedded, and Full), and only the Full SRE model has SREs fully accountable for reliability outcomes.
From the Site Reliability Engineering Book, Chapter "SRE Engagement Models":
"In the Full SRE model, the SRE team is responsible for end-to-end reliability. Reliability becomes a first- class objective, supported through SLOs, error budgets, and systematic reduction of toil." The Full model includes:
* Full ownership of reliability
* Enforcement of SLOs
* Error budget policies
* Engineering-driven improvement
Other models:
* Consulting # SRE gives guidance but doesn't own reliability
* Embedded # temporary embedding to train teams, not full ownership
* Platform # focuses on shared tooling, not service ownership
Thus, D. Full is correct.
References:
Site Reliability Engineering Book, "Engagement Models"
SRE Workbook, "Adopting SRE in Your Organization"
NEW QUESTION # 45
How does automation reduce toil?
- A. Automated releases can replace manual releases
- B. Automation doesn't reduce toil. In fact creating automation requires more toil.
- C. We can use video conference facilities to prevent travel to meetings
- D. We can use artificial intelligence to tell us where we are wasting all of our time
Answer: A
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Automation is the primary method of reducing toil in SRE. The Google Site Reliability Engineering Book, Chapter "Eliminating Toil," states:
"Automation is the most effective tool for reducing toil. Any recurring, manual, automatable task should be automated to prevent it from consuming engineering time." Automated release systems directly eliminate toil by:
* Removing manual deployment steps
* Removing repeated, error-prone human processes
* Increasing reliability and consistency
* Freeing engineers for high-value project work
The SRE Workbook reinforces this:
"CI/CD pipelines and release automation remove significant operational toil by replacing manual processes with repeatable, reliable automation." Why the other answers are incorrect:
* B AI is not required for toil reduction.
* C Meeting travel is not an SRE toil concern.
* D Incorrect; automation dramatically reduces long-term toil, even though initial setup requires effort.
Thus, A is the correct answer.
References:
Site Reliability Engineering Book, "Eliminating Toil"
SRE Workbook, "Toil Reduction Strategies"
NEW QUESTION # 46
Which of the following is the BEST description of a Customer Reliability Engineer (CRE)?
- A. They work with the cloud provider's SRE team to ship and build new features
- B. They use deep engineering expertise to improve the cloud provider's services
- C. They take a software engineering approach to redesign all cloud services
- D. They integrate with the customer's operations team to share responsibilities
Answer: D
Explanation:
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.
References:
The Site Reliability Workbook, Chapter: "Customer Reliability Engineering." Google Cloud documentation on CRE practices.
NEW QUESTION # 47
Which type of engineering work will reduce toil within the service?
- A. Scalable infrastructure
- B. Internal automation
- C. Continuous delivery pipelines
- D. Scripts and automation tools outside of the service
Answer: B
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Toil-reduction engineering focuses on making the service itself easier to operate. The most direct way to achieve this is through internal automation - automation built into the service that eliminates repetitive, manual operational tasks.
The Site Reliability Engineering Book, Chapter "Eliminating Toil," states:
"Automation that replaces manual, repetitive operational tasks is the primary mechanism for reducing toil.
The most effective form of toil reduction is automation that is integrated directly into the service itself." The SRE Workbook reinforces:
"Internal automation contributes directly to service reliability and reduces the operational burden by ensuring that manual tasks are permanently removed." Why the other options are not the best answer:
* A Continuous delivery pipelines reduce release friction but do not directly remove service-operational toil.
* B External scripts and tools help but are less effective and harder to maintain than internal automation.
* C Scalable infrastructure reduces linear-scaling toil but does not address broader operational burdens.
Thus, the correct answer is D.
References:
Site Reliability Engineering Book, "Eliminating Toil"
SRE Workbook, "Toil Reduction Approaches"
NEW QUESTION # 48
Which of the following BEST describes capacity planning?
- A. Monitoring the percentage of capacity of resources being used over a time period
- B. Activates used to create a plan that manages resources to meet service demand
- C. Determining the maximum amount that any resource can accommodate or deliver
- D. Activities performed to manage provider resources and provide multiple services
Answer: C
NEW QUESTION # 49
What is the MOST widely tracked Service Level Objective (SLO)?
- A. Securability
- B. Performance
- C. Observability
- D. Availability
Answer: D
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Availability is the most widely tracked and commonly understood SLO across nearly all digital services. It measures whether users are able to successfully access and use the system. Because unavailability directly impacts user experience, revenue, trust, and reliability, it is the primary SLO used across industries.
The Site Reliability Engineering Book, Chapter "Service Level Objectives," states:
"Availability is one of the most common and important SLOs since it reflects the basic ability of the service to function for users." The SRE Workbook also notes:
"Availability targets (e.g., 99.9%, 99.99%) are the most widely used form of SLOs and form the foundation of error budget policies." While performance SLOs are also common, availability SLOs are almost universal and foundational.
Thus, D. Availability is the correct answer.
References:
Site Reliability Engineering Book, "Service Level Objectives"
SRE Workbook, "Implementing SLOs"
NEW QUESTION # 50
Identify the missing word(s) in the following sentence.
Site reliability engineering is a_________approach to IT operations.
- A. ....security engineering....
- B. ....simulation engineering....
- C. ....structural engineering....
- D. ....software engineering....
Answer: D
NEW QUESTION # 51
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The PeopleCert DevOps-SRE certification is comprised of a single exam, which must be taken at one of PeopleCert's authorized testing centers. DevOps-SRE exam is designed to test candidates' knowledge and understanding of the best practices and methodologies for managing complex production systems. To pass the exam, candidates must score at least 75% on the exam.
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