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Linux Foundation KCNA Practice Test 70

Question 690

At Timberline Foods, the supply-chain applications team is managing a factory inventory cluster with requirements for operational resilience and accurate stock changes. The release reviewer now needs objective evidence for this original issue: A developer uses kubectl exec with unrestricted permissions in a protected production namespace for routine debugging. Which observed result BEST confirms the intended correction?

  1. The incident record contains traceable pre-restart evidence and a repeat test validates the actual corrective change.
  2. An ordinary support identity can read relevant logs but cannot start arbitrary privileged sessions in production Pods.
  3. The incident can be diagnosed without rebuilding the production image solely to add an interactive shell.
  4. The root cause is documented and the corrected rollout completes within its expected progress window.

Explanation

Correct Answer

B:

An ordinary support identity can read relevant logs but cannot start arbitrary privileged sessions in production Pods. This demonstrates that the originally documented problem was resolved: A developer uses kubectl exec with unrestricted permissions in a protected production namespace for routine debugging. The corresponding corrective approach is: Prefer least-privilege read-only inspection and use controlled temporary debug access only when authorized. For Timberline Foods, this observed outcome is more meaningful than a completed ticket or configuration claim.

Incorrect Answers

A:

The incident record contains traceable pre-restart evidence and a repeat test validates the actual corrective change. That observed result would support another specific correction: Capture timestamped logs, events and relevant manifests before transient state is lost, then verify the suspected cause. The other scenario concerns: A staging issue disappears after a Pod restart but the team closes it without preserving the logs and resource conditions. The current Timberline Foods problem is: A developer uses kubectl exec with unrestricted permissions in a protected production namespace for routine debugging. The evidence required here is: An ordinary support identity can read relevant logs but cannot start arbitrary privileged sessions in production Pods.

C:

The incident can be diagnosed without rebuilding the production image solely to add an interactive shell. That observed result would support another specific correction: Use supported logs, process metadata, or approved ephemeral debugging methods rather than requiring a shell inside production images. The other scenario concerns: An engineer runs a debugging shell inside an immutable distroless container and assumes the application is broken because no shell exists. The current Timberline Foods problem is: A developer uses kubectl exec with unrestricted permissions in a protected production namespace for routine debugging. The evidence required here is: An ordinary support identity can read relevant logs but cannot start arbitrary privileged sessions in production Pods.

D:

The root cause is documented and the corrected rollout completes within its expected progress window. That observed result would support another specific correction: Use rollout status, Deployment conditions and Pod events to isolate scheduling, image or readiness failures. The other scenario concerns: A failed rollout reports a progress deadline but the engineer keeps running apply instead of inspecting deployment conditions. The current Timberline Foods problem is: A developer uses kubectl exec with unrestricted permissions in a protected production namespace for routine debugging. The evidence required here is: An ordinary support identity can read relevant logs but cannot start arbitrary privileged sessions in production Pods.

Question 691

At Silvercrest University, the research computing team is managing a shared container platform with requirements for student workload separation and experiment repeatability. The training lab has documented this issue: A developer uses kubectl exec with unrestricted permissions in a protected production namespace for routine debugging. Which change BEST resolves the specific issue?

  1. Prefer least-privilege read-only inspection and use controlled temporary debug access only when authorized.
  2. Read previous container logs, state and exit codes to identify startup and crash diagnostics.
  3. Inspect waiting container reasons, image pull status and application startup logs before modifying network exposure.
  4. Capture timestamped logs, events and relevant manifests before transient state is lost, then verify the suspected cause.

Explanation

Correct Answer

A:

Prefer least-privilege read-only inspection and use controlled temporary debug access only when authorized. This directly addresses the operational issue: A developer uses kubectl exec with unrestricted permissions in a protected production namespace for routine debugging. The Silvercrest University team should verify its effectiveness rather than assume that an updated manifest or command proves success. The strongest acceptance evidence is: An ordinary support identity can read relevant logs but cannot start arbitrary privileged sessions in production Pods.

Incorrect Answers

B:

Read previous container logs, state and exit codes to identify startup and crash diagnostics. That choice addresses a different foundational issue: A Kubernetes app crashes before emitting normal logs and a trainee assumes there is no way to inspect its last termination. The issue at Silvercrest University is instead: A developer uses kubectl exec with unrestricted permissions in a protected production namespace for routine debugging. It does not establish the required correction; the decisive verification would be: An ordinary support identity can read relevant logs but cannot start arbitrary privileged sessions in production Pods.

C:

Inspect waiting container reasons, image pull status and application startup logs before modifying network exposure. That choice addresses a different foundational issue: A developer tries to debug a crash by changing Service type even though the Pod never starts its container. The issue at Silvercrest University is instead: A developer uses kubectl exec with unrestricted permissions in a protected production namespace for routine debugging. It does not establish the required correction; the decisive verification would be: An ordinary support identity can read relevant logs but cannot start arbitrary privileged sessions in production Pods.

D:

Capture timestamped logs, events and relevant manifests before transient state is lost, then verify the suspected cause. That choice addresses a different foundational issue: A staging issue disappears after a Pod restart but the team closes it without preserving the logs and resource conditions. The issue at Silvercrest University is instead: A developer uses kubectl exec with unrestricted permissions in a protected production namespace for routine debugging. It does not establish the required correction; the decisive verification would be: An ordinary support identity can read relevant logs but cannot start arbitrary privileged sessions in production Pods.

Question 692

At Silvercrest University, the research computing team is managing a shared container platform with requirements for student workload separation and experiment repeatability. The team claims a correction and requests independent validation for: A developer uses kubectl exec with unrestricted permissions in a protected production namespace for routine debugging. Which observed result BEST confirms the intended correction?

  1. The deployed release returns an expected response and related Pods report Ready, not merely Running.
  2. The diagnostic evidence pinpoints the failing revision and confirms the corrected replacement Pods become ready.
  3. An ordinary support identity can read relevant logs but cannot start arbitrary privileged sessions in production Pods.
  4. The root cause is documented and the corrected rollout completes within its expected progress window.

Explanation

Correct Answer

C:

An ordinary support identity can read relevant logs but cannot start arbitrary privileged sessions in production Pods. This demonstrates that the originally documented problem was resolved: A developer uses kubectl exec with unrestricted permissions in a protected production namespace for routine debugging. The corresponding corrective approach is: Prefer least-privilege read-only inspection and use controlled temporary debug access only when authorized. For Silvercrest University, this observed outcome is more meaningful than a completed ticket or configuration claim.

Incorrect Answers

A:

The deployed release returns an expected response and related Pods report Ready, not merely Running. That observed result would support another specific correction: Combine workload status with a legitimate end-to-end probe through the application Service or entry point. The other scenario concerns: A team tests application health only through kubectl get and never checks whether the process is actually serving responses. The current Silvercrest University problem is: A developer uses kubectl exec with unrestricted permissions in a protected production namespace for routine debugging. The evidence required here is: An ordinary support identity can read relevant logs but cannot start arbitrary privileged sessions in production Pods.

B:

The diagnostic evidence pinpoints the failing revision and confirms the corrected replacement Pods become ready. That observed result would support another specific correction: Inspect the current rollout's Pods, conditions and per-container logs to identify the new version's failure. The other scenario concerns: A new release fails readiness but developers only read the old version's logs and conclude the application is healthy. The current Silvercrest University problem is: A developer uses kubectl exec with unrestricted permissions in a protected production namespace for routine debugging. The evidence required here is: An ordinary support identity can read relevant logs but cannot start arbitrary privileged sessions in production Pods.

D:

The root cause is documented and the corrected rollout completes within its expected progress window. That observed result would support another specific correction: Use rollout status, Deployment conditions and Pod events to isolate scheduling, image or readiness failures. The other scenario concerns: A failed rollout reports a progress deadline but the engineer keeps running apply instead of inspecting deployment conditions. The current Silvercrest University problem is: A developer uses kubectl exec with unrestricted permissions in a protected production namespace for routine debugging. The evidence required here is: An ordinary support identity can read relevant logs but cannot start arbitrary privileged sessions in production Pods.

Question 693

At Meadowbrook Finance, the banking platform team is managing a payment application delivery pipeline with requirements for traceable changes and controlled release risk. A platform check finds: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. Which change BEST resolves the specific issue?

  1. Inspect waiting container reasons, image pull status and application startup logs before modifying network exposure.
  2. Inspect the current rollout's Pods, conditions and per-container logs to identify the new version's failure.
  3. Combine workload status with a legitimate end-to-end probe through the application Service or entry point.
  4. Inspect the effective mounted or environment configuration and revision history alongside application logs.

Explanation

Correct Answer

D:

Inspect the effective mounted or environment configuration and revision history alongside application logs. This directly addresses the operational issue: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. The Meadowbrook Finance team should verify its effectiveness rather than assume that an updated manifest or command proves success. The strongest acceptance evidence is: The investigation identifies the changed setting and a corrected configuration restores the expected app behavior.

Incorrect Answers

A:

Inspect waiting container reasons, image pull status and application startup logs before modifying network exposure. That choice addresses a different foundational issue: A developer tries to debug a crash by changing Service type even though the Pod never starts its container. The issue at Meadowbrook Finance is instead: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. It does not establish the required correction; the decisive verification would be: The investigation identifies the changed setting and a corrected configuration restores the expected app behavior.

B:

Inspect the current rollout's Pods, conditions and per-container logs to identify the new version's failure. That choice addresses a different foundational issue: A new release fails readiness but developers only read the old version's logs and conclude the application is healthy. The issue at Meadowbrook Finance is instead: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. It does not establish the required correction; the decisive verification would be: The investigation identifies the changed setting and a corrected configuration restores the expected app behavior.

C:

Combine workload status with a legitimate end-to-end probe through the application Service or entry point. That choice addresses a different foundational issue: A team tests application health only through kubectl get and never checks whether the process is actually serving responses. The issue at Meadowbrook Finance is instead: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. It does not establish the required correction; the decisive verification would be: The investigation identifies the changed setting and a corrected configuration restores the expected app behavior.

Question 694

At Meadowbrook Finance, the banking platform team is managing a payment application delivery pipeline with requirements for traceable changes and controlled release risk. An acceptance check is required after fixing: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. Which observed result BEST confirms the intended correction?

  1. The app remains Running while the fixed endpoint or port mapping restores Service-level client access.
  2. The root cause is documented and the corrected rollout completes within its expected progress window.
  3. The investigation identifies the changed setting and a corrected configuration restores the expected app behavior.
  4. The diagnostic evidence pinpoints the failing revision and confirms the corrected replacement Pods become ready.

Explanation

Correct Answer

C:

The investigation identifies the changed setting and a corrected configuration restores the expected app behavior. This demonstrates that the originally documented problem was resolved: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. The corresponding corrective approach is: Inspect the effective mounted or environment configuration and revision history alongside application logs. For Meadowbrook Finance, this observed outcome is more meaningful than a completed ticket or configuration claim.

Incorrect Answers

A:

The app remains Running while the fixed endpoint or port mapping restores Service-level client access. That observed result would support another specific correction: Check Service port mapping, ready endpoints, and permitted network paths separately from the container's health. The other scenario concerns: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. The current Meadowbrook Finance problem is: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. The evidence required here is: The investigation identifies the changed setting and a corrected configuration restores the expected app behavior.

B:

The root cause is documented and the corrected rollout completes within its expected progress window. That observed result would support another specific correction: Use rollout status, Deployment conditions and Pod events to isolate scheduling, image or readiness failures. The other scenario concerns: A failed rollout reports a progress deadline but the engineer keeps running apply instead of inspecting deployment conditions. The current Meadowbrook Finance problem is: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. The evidence required here is: The investigation identifies the changed setting and a corrected configuration restores the expected app behavior.

D:

The diagnostic evidence pinpoints the failing revision and confirms the corrected replacement Pods become ready. That observed result would support another specific correction: Inspect the current rollout's Pods, conditions and per-container logs to identify the new version's failure. The other scenario concerns: A new release fails readiness but developers only read the old version's logs and conclude the application is healthy. The current Meadowbrook Finance problem is: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. The evidence required here is: The investigation identifies the changed setting and a corrected configuration restores the expected app behavior.

Question 695

At Harborline Logistics, the warehouse platform team is managing a containerized shipping system with requirements for continuous shipment tracing and safe cluster rollouts. An implementation review identifies the following problem: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. Which change BEST resolves the specific issue?

  1. Inspect the effective mounted or environment configuration and revision history alongside application logs.
  2. Use a readiness check reflecting whether the Pod can currently serve legitimate requests and preserve liveness separately.
  3. Compare Deployment Pod labels against Service selectors and the resulting EndpointSlices.
  4. Check Service port mapping, ready endpoints, and permitted network paths separately from the container's health.

Explanation

Correct Answer

A:

Inspect the effective mounted or environment configuration and revision history alongside application logs. This directly addresses the operational issue: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. The Harborline Logistics team should verify its effectiveness rather than assume that an updated manifest or command proves success. The strongest acceptance evidence is: The investigation identifies the changed setting and a corrected configuration restores the expected app behavior.

Incorrect Answers

B:

Use a readiness check reflecting whether the Pod can currently serve legitimate requests and preserve liveness separately. That choice addresses a different foundational issue: An application passes liveness checks yet its dependencies are unavailable and the release immediately receives normal traffic. The issue at Harborline Logistics is instead: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. It does not establish the required correction; the decisive verification would be: The investigation identifies the changed setting and a corrected configuration restores the expected app behavior.

C:

Compare Deployment Pod labels against Service selectors and the resulting EndpointSlices. That choice addresses a different foundational issue: A release's Pods start but users receive errors because the Service selector still points to the previous version label. The issue at Harborline Logistics is instead: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. It does not establish the required correction; the decisive verification would be: The investigation identifies the changed setting and a corrected configuration restores the expected app behavior.

D:

Check Service port mapping, ready endpoints, and permitted network paths separately from the container's health. That choice addresses a different foundational issue: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. The issue at Harborline Logistics is instead: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. It does not establish the required correction; the decisive verification would be: The investigation identifies the changed setting and a corrected configuration restores the expected app behavior.

Question 696

At Harborline Logistics, the warehouse platform team is managing a containerized shipping system with requirements for continuous shipment tracing and safe cluster rollouts. The release reviewer now needs objective evidence for this original issue: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. Which observed result BEST confirms the intended correction?

  1. The root cause is documented and the corrected rollout completes within its expected progress window.
  2. The investigation identifies the changed setting and a corrected configuration restores the expected app behavior.
  3. The diagnostic evidence pinpoints the failing revision and confirms the corrected replacement Pods become ready.
  4. The deployed release returns an expected response and related Pods report Ready, not merely Running.

Explanation

Correct Answer

B:

The investigation identifies the changed setting and a corrected configuration restores the expected app behavior. This demonstrates that the originally documented problem was resolved: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. The corresponding corrective approach is: Inspect the effective mounted or environment configuration and revision history alongside application logs. For Harborline Logistics, this observed outcome is more meaningful than a completed ticket or configuration claim.

Incorrect Answers

A:

The root cause is documented and the corrected rollout completes within its expected progress window. That observed result would support another specific correction: Use rollout status, Deployment conditions and Pod events to isolate scheduling, image or readiness failures. The other scenario concerns: A failed rollout reports a progress deadline but the engineer keeps running apply instead of inspecting deployment conditions. The current Harborline Logistics problem is: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. The evidence required here is: The investigation identifies the changed setting and a corrected configuration restores the expected app behavior.

C:

The diagnostic evidence pinpoints the failing revision and confirms the corrected replacement Pods become ready. That observed result would support another specific correction: Inspect the current rollout's Pods, conditions and per-container logs to identify the new version's failure. The other scenario concerns: A new release fails readiness but developers only read the old version's logs and conclude the application is healthy. The current Harborline Logistics problem is: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. The evidence required here is: The investigation identifies the changed setting and a corrected configuration restores the expected app behavior.

D:

The deployed release returns an expected response and related Pods report Ready, not merely Running. That observed result would support another specific correction: Combine workload status with a legitimate end-to-end probe through the application Service or entry point. The other scenario concerns: A team tests application health only through kubectl get and never checks whether the process is actually serving responses. The current Harborline Logistics problem is: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. The evidence required here is: The investigation identifies the changed setting and a corrected configuration restores the expected app behavior.

Question 697

At Alpine Healthcare, the clinical platform team is managing a healthcare application migration with requirements for patient privacy and high service availability. The training lab has documented this issue: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. Which change BEST resolves the specific issue?

  1. Combine workload status with a legitimate end-to-end probe through the application Service or entry point.
  2. Inspect waiting container reasons, image pull status and application startup logs before modifying network exposure.
  3. Prefer least-privilege read-only inspection and use controlled temporary debug access only when authorized.
  4. Check Service port mapping, ready endpoints, and permitted network paths separately from the container's health.

Explanation

Correct Answer

D:

Check Service port mapping, ready endpoints, and permitted network paths separately from the container's health. This directly addresses the operational issue: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. The Alpine Healthcare team should verify its effectiveness rather than assume that an updated manifest or command proves success. The strongest acceptance evidence is: The app remains Running while the fixed endpoint or port mapping restores Service-level client access.

Incorrect Answers

A:

Combine workload status with a legitimate end-to-end probe through the application Service or entry point. That choice addresses a different foundational issue: A team tests application health only through kubectl get and never checks whether the process is actually serving responses. The issue at Alpine Healthcare is instead: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. It does not establish the required correction; the decisive verification would be: The app remains Running while the fixed endpoint or port mapping restores Service-level client access.

B:

Inspect waiting container reasons, image pull status and application startup logs before modifying network exposure. That choice addresses a different foundational issue: A developer tries to debug a crash by changing Service type even though the Pod never starts its container. The issue at Alpine Healthcare is instead: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. It does not establish the required correction; the decisive verification would be: The app remains Running while the fixed endpoint or port mapping restores Service-level client access.

C:

Prefer least-privilege read-only inspection and use controlled temporary debug access only when authorized. That choice addresses a different foundational issue: A developer uses kubectl exec with unrestricted permissions in a protected production namespace for routine debugging. The issue at Alpine Healthcare is instead: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. It does not establish the required correction; the decisive verification would be: The app remains Running while the fixed endpoint or port mapping restores Service-level client access.

Question 698

At Alpine Healthcare, the clinical platform team is managing a healthcare application migration with requirements for patient privacy and high service availability. The team claims a correction and requests independent validation for: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. Which observed result BEST confirms the intended correction?

  1. The app remains Running while the fixed endpoint or port mapping restores Service-level client access.
  2. The Service resolves to the intended new ready Pods and user requests reach the correct release.
  3. The deployed release returns an expected response and related Pods report Ready, not merely Running.
  4. The Pod is excluded from the Service until its required dependency is ready and then joins the endpoint set.

Explanation

Correct Answer

A:

The app remains Running while the fixed endpoint or port mapping restores Service-level client access. This demonstrates that the originally documented problem was resolved: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. The corresponding corrective approach is: Check Service port mapping, ready endpoints, and permitted network paths separately from the container's health. For Alpine Healthcare, this observed outcome is more meaningful than a completed ticket or configuration claim.

Incorrect Answers

B:

The Service resolves to the intended new ready Pods and user requests reach the correct release. That observed result would support another specific correction: Compare Deployment Pod labels against Service selectors and the resulting EndpointSlices. The other scenario concerns: A release's Pods start but users receive errors because the Service selector still points to the previous version label. The current Alpine Healthcare problem is: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. The evidence required here is: The app remains Running while the fixed endpoint or port mapping restores Service-level client access.

C:

The deployed release returns an expected response and related Pods report Ready, not merely Running. That observed result would support another specific correction: Combine workload status with a legitimate end-to-end probe through the application Service or entry point. The other scenario concerns: A team tests application health only through kubectl get and never checks whether the process is actually serving responses. The current Alpine Healthcare problem is: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. The evidence required here is: The app remains Running while the fixed endpoint or port mapping restores Service-level client access.

D:

The Pod is excluded from the Service until its required dependency is ready and then joins the endpoint set. That observed result would support another specific correction: Use a readiness check reflecting whether the Pod can currently serve legitimate requests and preserve liveness separately. The other scenario concerns: An application passes liveness checks yet its dependencies are unavailable and the release immediately receives normal traffic. The current Alpine Healthcare problem is: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. The evidence required here is: The app remains Running while the fixed endpoint or port mapping restores Service-level client access.

Question 699

At Timberline Foods, the supply-chain applications team is managing a factory inventory cluster with requirements for operational resilience and accurate stock changes. A platform check finds: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. Which change BEST resolves the specific issue?

  1. Prefer least-privilege read-only inspection and use controlled temporary debug access only when authorized.
  2. Check Service port mapping, ready endpoints, and permitted network paths separately from the container's health.
  3. Inspect the effective mounted or environment configuration and revision history alongside application logs.
  4. Compare Deployment Pod labels against Service selectors and the resulting EndpointSlices.

Explanation

Correct Answer

B:

Check Service port mapping, ready endpoints, and permitted network paths separately from the container's health. This directly addresses the operational issue: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. The Timberline Foods team should verify its effectiveness rather than assume that an updated manifest or command proves success. The strongest acceptance evidence is: The app remains Running while the fixed endpoint or port mapping restores Service-level client access.

Incorrect Answers

A:

Prefer least-privilege read-only inspection and use controlled temporary debug access only when authorized. That choice addresses a different foundational issue: A developer uses kubectl exec with unrestricted permissions in a protected production namespace for routine debugging. The issue at Timberline Foods is instead: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. It does not establish the required correction; the decisive verification would be: The app remains Running while the fixed endpoint or port mapping restores Service-level client access.

C:

Inspect the effective mounted or environment configuration and revision history alongside application logs. That choice addresses a different foundational issue: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. The issue at Timberline Foods is instead: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. It does not establish the required correction; the decisive verification would be: The app remains Running while the fixed endpoint or port mapping restores Service-level client access.

D:

Compare Deployment Pod labels against Service selectors and the resulting EndpointSlices. That choice addresses a different foundational issue: A release's Pods start but users receive errors because the Service selector still points to the previous version label. The issue at Timberline Foods is instead: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. It does not establish the required correction; the decisive verification would be: The app remains Running while the fixed endpoint or port mapping restores Service-level client access.

Question 700

At Timberline Foods, the supply-chain applications team is managing a factory inventory cluster with requirements for operational resilience and accurate stock changes. An acceptance check is required after fixing: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. Which observed result BEST confirms the intended correction?

  1. The investigation identifies the changed setting and a corrected configuration restores the expected app behavior.
  2. The deployed release returns an expected response and related Pods report Ready, not merely Running.
  3. The app remains Running while the fixed endpoint or port mapping restores Service-level client access.
  4. The Pod is excluded from the Service until its required dependency is ready and then joins the endpoint set.

Explanation

Correct Answer

C:

The app remains Running while the fixed endpoint or port mapping restores Service-level client access. This demonstrates that the originally documented problem was resolved: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. The corresponding corrective approach is: Check Service port mapping, ready endpoints, and permitted network paths separately from the container's health. For Timberline Foods, this observed outcome is more meaningful than a completed ticket or configuration claim.

Incorrect Answers

A:

The investigation identifies the changed setting and a corrected configuration restores the expected app behavior. That observed result would support another specific correction: Inspect the effective mounted or environment configuration and revision history alongside application logs. The other scenario concerns: A crash occurs only after a recent ConfigMap update and a team blames the container image without comparing live configuration. The current Timberline Foods problem is: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. The evidence required here is: The app remains Running while the fixed endpoint or port mapping restores Service-level client access.

B:

The deployed release returns an expected response and related Pods report Ready, not merely Running. That observed result would support another specific correction: Combine workload status with a legitimate end-to-end probe through the application Service or entry point. The other scenario concerns: A team tests application health only through kubectl get and never checks whether the process is actually serving responses. The current Timberline Foods problem is: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. The evidence required here is: The app remains Running while the fixed endpoint or port mapping restores Service-level client access.

D:

The Pod is excluded from the Service until its required dependency is ready and then joins the endpoint set. That observed result would support another specific correction: Use a readiness check reflecting whether the Pod can currently serve legitimate requests and preserve liveness separately. The other scenario concerns: An application passes liveness checks yet its dependencies are unavailable and the release immediately receives normal traffic. The current Timberline Foods problem is: An app works within one Pod but fails through its Service and a trainee concludes the process must have crashed. The evidence required here is: The app remains Running while the fixed endpoint or port mapping restores Service-level client access.