💻 Designing Scalable, Available, and Reliable Cloud-Native Applications - PCD Practice Questions

Design scalable applications using microservices, event-driven patterns, and GCP managed services.

5Questions Available
1Exam Domains

Practice Cloud-Native Apps Questions Now

Start a timed practice session focusing on Designing Scalable, Available, and Reliable Cloud-Native Applications topics from the PCD question bank.

Start PCD Practice Quiz →

PCD Cloud-Native Apps Question Bank (5 Questions)

Browse all 5 practice questions covering Designing Scalable, Available, and Reliable Cloud-Native Applications for the PCD certification exam. Answers are intentionally hidden on this page so you can self-test first before checking results in quiz mode.

  1. Question 1Designing Scalable, Available, and Reliable Cloud-Native Applications

    According to twelve-factor app methodology, how should a Cloud Run service access its database connection string?

    AHardcode in source code
    BInject via environment variables or Secret Manager — keeping configuration separate from code, enabling different values per environment
    CRead from a local config file in the container
    DQuery a DNS record

    Answer hidden for practice.

    Use the interactive quiz to reveal the correct answer and explanation.

    Start PCD Quiz
  2. Question 2Designing Scalable, Available, and Reliable Cloud-Native Applications

    How should you design a Cloud Run service to process events from multiple Google Cloud sources?

    APoll each source separately
    BUse Eventarc to route events from Cloud Storage, Pub/Sub, Firestore, and other sources to your Cloud Run service — providing unified event delivery with CloudEvents format
    CCreate separate services per source
    DUse cron jobs to check each source

    Answer hidden for practice.

    Use the interactive quiz to reveal the correct answer and explanation.

    Start PCD Quiz
  3. Question 3Managing Application Performance

    What observability stack should you implement for a microservices application on Cloud Run?

    AOnly error logs
    BThree pillars: Cloud Logging (structured logs), Cloud Monitoring (metrics, dashboards, alerts), and Cloud Trace (distributed tracing) — correlated via trace ID for end-to-end request visibility
    COnly monitoring
    DThird-party tools only

    Answer hidden for practice.

    Use the interactive quiz to reveal the correct answer and explanation.

    Start PCD Quiz
  4. Question 4Designing Scalable, Available, and Reliable Cloud-Native Applications

    When should you implement a service mesh (Anthos Service Mesh) for your microservices on GKE?

    AAlways, for any microservices
    BWhen you need mTLS, traffic management (canary, retries, circuit breaking), and observability (distributed tracing, metrics per service) without modifying application code
    CNever, it adds too much complexity
    DOnly for 2 services

    Answer hidden for practice.

    Use the interactive quiz to reveal the correct answer and explanation.

    Start PCD Quiz
  5. Question 5Building and Testing Applications

    How should you implement chaos engineering for your Cloud Run and GKE services?

    ABreak production randomly
    BInject controlled failures in a staging environment: kill pods, add latency, simulate service outages — verify that circuit breakers, retries, and fallbacks work as designed
    COnly test in production
    DNever test failures

    Answer hidden for practice.

    Use the interactive quiz to reveal the correct answer and explanation.

    Start PCD Quiz

Key Cloud-Native Apps Concepts for PCD

microservicesevent-drivenscalablecloud-nativetwelve-factorcloud rungke

PCD Cloud-Native Apps Exam Tips

Designing Scalable, Available, and Reliable Cloud-Native Applications questions in PCD are typically scenario-based. Focus on service-level decision making aligned to official exam objectives. Priority concepts: microservices, event-driven, scalable, cloud-native, twelve-factor, cloud run.

What PCD Expects

  • Anchor your answer in select the most practical, secure, and scalable answer for the stated scenario.
  • Cloud-Native Apps scenarios for PCD are frequently mapped to Domain 1 (~25%), so read the objective carefully before picking controls or architecture.
  • Expect multi-topic scenarios where Cloud-Native Apps interacts with IAM, networking, data, or operations patterns rather than appearing as an isolated question.
  • When two options are both technically valid, prefer the choice that best aligns with the exam's operational scope (Professional) and vendor best practices.

High-Value Cloud-Native Apps Concepts

  • Know the core Cloud-Native Apps building blocks cold: microservices, event-driven, scalable, cloud-native.
  • Review the edge-case features and limits for twelve-factor, cloud run; these details are commonly used to differentiate answer choices.
  • Practice service-integration reasoning: how Cloud-Native Apps pairs with Building & Testing, Deploying in real deployment patterns.
  • For PCD, explain why the chosen Cloud-Native Apps design meets reliability, security, and cost expectations better than the alternatives.

Common PCD Traps

  • Watch for answers that partially solve the requirement but miss operational constraints.
  • Questions in Designing Cloud-Native Applications often include distractors that look correct for Cloud-Native Apps but violate least-privilege, reliability, or scalability requirements.
  • Avoid picking options purely by feature name; validate data path, failure handling, and governance impact before answering.
  • If the prompt hints at automation or repeatability, eliminate manual-only operational answers first.

Fast Review Checklist

  • Can you compare at least two Cloud-Native Apps implementation paths and justify which one best fits the scenario?
  • Can you map the chosen answer back to Designing Cloud-Native Applications (~25%) outcomes for PCD?
  • Can you explain security and access boundaries for Cloud-Native Apps without relying on default-open assumptions?
  • Can you describe how Cloud-Native Apps integrates with Building & Testing and Deploying during failure, scaling, and monitoring events?

Exam Domains Covering Cloud-Native Apps

Related Resources

More PCD Study Resources