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AWS Certified DevOps Engineer - Professional DOP-C02 Practice Test 33

Question 320

An enterprise maintains separate human IAM users in every AWS account and cannot revoke an employee's cross-account access reliably.

Which underlying service behavior is most important here?

  1. An organization-level condition can restrict regional actions broadly; exceptions are necessary for services whose endpoints or semantics are global.
  2. Federated human identity and permission-set assignment reduce per-account user sprawl and create consistent account-specific role permissions.
  3. Delegated administration separates operational service management from the powerful organizations management account, limiting credential exposure.
  4. An organization trail expands management-event coverage to member accounts and supports consolidated immutable audit operations.

Explanation

Correct Answer

B:

Federated human identity and permission-set assignment reduce per-account user sprawl and create consistent account-specific role permissions. This explains the implementation decision: Use IAM Identity Center federation and permission sets to assign centrally managed workforce access across accounts. Verification should show the following: Disabling a workforce identity removes its assigned access across the intended AWS accounts through the managed identity workflow.

Incorrect Answers

A:

An organization-level condition can restrict regional actions broadly; exceptions are necessary for services whose endpoints or semantics are global. This reasoning supports the alternative topic of guardrail region restriction, for which the relevant intervention is: Apply a carefully scoped AWS Organizations SCP region-deny guardrail with required global-service exceptions. The scenario requires understanding permission sets at scale, where federated human identity and permission-set assignment reduce per-account user sprawl and create consistent account-specific role permissions.

C:

Delegated administration separates operational service management from the powerful organizations management account, limiting credential exposure. This reasoning supports the alternative topic of delegated administration control, for which the relevant intervention is: Register supported delegated administrator accounts for applicable organization-level security services and minimize management-account use. The scenario requires understanding permission sets at scale, where federated human identity and permission-set assignment reduce per-account user sprawl and create consistent account-specific role permissions.

D:

An organization trail expands management-event coverage to member accounts and supports consolidated immutable audit operations. This reasoning supports the alternative topic of organization trail audit scope, for which the relevant intervention is: Create an organization-level multi-Region CloudTrail trail with protected centralized log storage and appropriate ownership. The scenario requires understanding permission sets at scale, where federated human identity and permission-set assignment reduce per-account user sprawl and create consistent account-specific role permissions.

Question 321

A global company creates long-lived IAM users for every employee in every workload account even though it operates a corporate identity provider.

Why would the preferred design resolve the described failure?

  1. STS role assumption requires a matching trust policy as well as caller-side permission; broad trust expands the pool of potential assumers.
  2. ABAC compares attributes at authorization time and scales access policy without a separate policy per resource when tags are trustworthy.
  3. Central federation uses trusted workforce identity and temporary account-role sessions, reducing credential lifecycle sprawl.
  4. Federated short-lived credentials avoid permanent key distribution and can constrain role assumption to a repository and workflow identity.

Explanation

Correct Answer

C:

Central federation uses trusted workforce identity and temporary account-role sessions, reducing credential lifecycle sprawl. This explains the implementation decision: Federate workforce access using IAM Identity Center and account-specific permission sets instead of cloning persistent IAM users. Verification should show the following: A former employee loses assigned account access after corporate deprovisioning without manual removal of dozens of IAM users.

Incorrect Answers

A:

STS role assumption requires a matching trust policy as well as caller-side permission; broad trust expands the pool of potential assumers. This reasoning supports the alternative topic of cross account assume role trust, for which the relevant intervention is: Restrict the target role trust policy to the intended tooling principal and scope its permissions to needed deployment actions. The scenario requires understanding federated human workforce, where central federation uses trusted workforce identity and temporary account-role sessions, reducing credential lifecycle sprawl.

B:

ABAC compares attributes at authorization time and scales access policy without a separate policy per resource when tags are trustworthy. This reasoning supports the alternative topic of abac application teams, for which the relevant intervention is: Implement controlled IAM attribute-based access using principal and resource tags with protections against unauthorized tag changes. The scenario requires understanding federated human workforce, where central federation uses trusted workforce identity and temporary account-role sessions, reducing credential lifecycle sprawl.

D:

Federated short-lived credentials avoid permanent key distribution and can constrain role assumption to a repository and workflow identity. This reasoning supports the alternative topic of temporary build credentials, for which the relevant intervention is: Use a supported OIDC federation trust or other short-lived credential exchange to assume a scoped AWS deployment role. The scenario requires understanding federated human workforce, where central federation uses trusted workforce identity and temporary account-role sessions, reducing credential lifecycle sprawl.

Question 322

An administrator executes a destructive SQL operation at noon and needs a database restored to the last safe point before the mistake.

Why is the recommended approach appropriate to this scenario?

  1. Pilot light reduces steady-state spend by leaving much of the application tier dormant, accepting a longer startup recovery time.
  2. A DR plan is an unproven hypothesis until tested with realistic failures, credentials, dependencies and measurement.
  3. PITR uses managed backups and transaction logs to recover to a chosen time in the retention window rather than only to fixed snapshot times.
  4. Warm standby keeps a functional recovery stack running, shortening restore time relative to rebuilding from backups.

Explanation

Correct Answer

C:

PITR uses managed backups and transaction logs to recover to a chosen time in the retention window rather than only to fixed snapshot times. This explains the implementation decision: Use RDS automated backups and point-in-time recovery to create a new instance from an eligible timestamp, then plan controlled cutover. Verification should show the following: A recovery rehearsal restores pre-error records to an isolated instance and a reconciled cutover procedure is documented.

Incorrect Answers

A:

Pilot light reduces steady-state spend by leaving much of the application tier dormant, accepting a longer startup recovery time. This reasoning supports the alternative topic of pilot light tradeoff, for which the relevant intervention is: Keep critical state and minimal core services replicated in a pilot-light Region and automate scale-out during a disaster. The scenario requires understanding rds point in time recovery, where pITR uses managed backups and transaction logs to recover to a chosen time in the retention window rather than only to fixed snapshot times.

B:

A DR plan is an unproven hypothesis until tested with realistic failures, credentials, dependencies and measurement. This reasoning supports the alternative topic of recovery runbook validation, for which the relevant intervention is: Automate and regularly perform recovery game days that verify resource, data and application restoration against business targets. The scenario requires understanding rds point in time recovery, where pITR uses managed backups and transaction logs to recover to a chosen time in the retention window rather than only to fixed snapshot times.

D:

Warm standby keeps a functional recovery stack running, shortening restore time relative to rebuilding from backups. This reasoning supports the alternative topic of warm standby recovery, for which the relevant intervention is: Maintain a reduced-capacity warm standby with replicated data and automation to scale it during failover. The scenario requires understanding rds point in time recovery, where pITR uses managed backups and transaction logs to recover to a chosen time in the retention window rather than only to fixed snapshot times.

Question 323

An SRE team must see CloudWatch metrics and logs from many application accounts, but copying monitoring access keys between accounts is unacceptable.

Which operational observation best confirms the intended design?

  1. Authorized SRE dashboards query intended source-account metrics and logs while unrelated principals remain denied.
  2. Logs for one request can be retrieved by its correlation identifier across related functions without exposing credentials.
  3. A test error entry increments the metric and the alarm transitions when the specified failure threshold is exceeded.
  4. New matching log records appear at the downstream consumer with expected latency and nonmatching content is filtered as configured.

Explanation

Correct Answer

A:

Authorized SRE dashboards query intended source-account metrics and logs while unrelated principals remain denied. It directly verifies the change: Use CloudWatch cross-account observability with a central monitoring account and approved source-account links where applicable. The test matters because cross-account observability shares selected telemetry with a monitoring account without handing out permanent workload account secrets.

Incorrect Answers

B:

Logs for one request can be retrieved by its correlation identifier across related functions without exposing credentials. That result would help prove log ingestion throughput, where the relevant action is: Emit consistent structured log records with request identifiers, relevant severity and bounded sensitive fields into CloudWatch Logs. It does not establish this case's required outcome. For cross account observability, the decisive verification is: Authorized SRE dashboards query intended source-account metrics and logs while unrelated principals remain denied.

C:

A test error entry increments the metric and the alarm transitions when the specified failure threshold is exceeded. That result would help prove metric filter error counts, where the relevant action is: Create a CloudWatch Logs metric filter using the error pattern, then alarm on the emitted custom metric. It does not establish this case's required outcome. For cross account observability, the decisive verification is: Authorized SRE dashboards query intended source-account metrics and logs while unrelated principals remain denied.

D:

New matching log records appear at the downstream consumer with expected latency and nonmatching content is filtered as configured. That result would help prove kinesis subscription processing, where the relevant action is: Configure CloudWatch Logs subscription filters to a supported streaming destination with suitable IAM and backpressure handling. It does not establish this case's required outcome. For cross account observability, the decisive verification is: Authorized SRE dashboards query intended source-account metrics and logs while unrelated principals remain denied.

Question 324

A CloudFormation stack update is blocked in UPDATE_ROLLBACK_FAILED because a required external resource was removed outside the stack.

What is the most appropriate next step for this team?

  1. Inspect stopped-task reasons, ECR connectivity and the ECS task execution role's image-pull permissions.
  2. Inspect stack events and resource dependencies, repair the root cause, then use supported rollback continuation before a new change set.
  3. Inspect pod events, image reference, registry access and pull credentials before changing cluster scaling.
  4. Correlate Lambda duration, timeout and downstream trace segments to identify whether the new code or dependency is responsible.

Explanation

Correct Answer

B:

Inspect stack events and resource dependencies, repair the root cause, then use supported rollback continuation before a new change set. CloudFormation stack events expose failing resource operations; recovery must restore a valid stack lifecycle before further updates. The relevant operational proof is specific: The stack reaches a stable allowed status with intended resources reconciled and an approved change set can proceed.

Incorrect Answers

A:

Inspect stopped-task reasons, ECR connectivity and the ECS task execution role's image-pull permissions. That would address ecs task startup failure, because the ECS task execution role and network path are needed to fetch container images before the application task can start. However, the stated situation instead concerns cloudformation update rollback. CloudFormation stack events expose failing resource operations; recovery must restore a valid stack lifecycle before further updates.

C:

Inspect pod events, image reference, registry access and pull credentials before changing cluster scaling. That would address eks image pull errors, because image pull failures occur before application readiness and are often unrelated to available compute capacity. However, the stated situation instead concerns cloudformation update rollback. CloudFormation stack events expose failing resource operations; recovery must restore a valid stack lifecycle before further updates.

D:

Correlate Lambda duration, timeout and downstream trace segments to identify whether the new code or dependency is responsible. That would address lambda timeout dependencies, because function timeouts can reflect external service latency, insufficient timeout configuration or resource pressure, requiring evidence rather than guesswork. However, the stated situation instead concerns cloudformation update rollback. CloudFormation stack events expose failing resource operations; recovery must restore a valid stack lifecycle before further updates.

Question 325

An Auto Scaling group must deploy a patched application binary but operators continue updating existing instances manually.

Which operational observation best confirms the intended design?

  1. Injecting a release regression triggers the alarm and restores the last successful deployment while preserving failure evidence.
  2. Hook logs confirm the intended process restart and the post-install health test returns an application-ready response.
  3. The refreshed fleet has the approved AMI ID and sufficient in-service instances throughout the replacement.
  4. The green target group passes readiness and smoke checks before the production listener sends requests to it.

Explanation

Correct Answer

C:

The refreshed fleet has the approved AMI ID and sufficient in-service instances throughout the replacement. It directly verifies the change: Create a new launch template version referencing the tested AMI and perform a managed instance refresh with health thresholds. The test matters because instance refresh reconciles the fleet to a declared immutable template while preserving a minimum healthy percentage.

Incorrect Answers

A:

Injecting a release regression triggers the alarm and restores the last successful deployment while preserving failure evidence. That result would help prove alarm based deployment rollback, where the relevant action is: Associate meaningful CloudWatch alarms with CodeDeploy and configure automatic rollback when application health degrades. It does not establish this case's required outcome. For immutable auto scaling replacement, the decisive verification is: The refreshed fleet has the approved AMI ID and sufficient in-service instances throughout the replacement.

B:

Hook logs confirm the intended process restart and the post-install health test returns an application-ready response. That result would help prove codedeploy lifecycle hooks, where the relevant action is: Configure the appropriate AppSpec lifecycle hooks to stop, install and start the application, then validate the service after installation. It does not establish this case's required outcome. For immutable auto scaling replacement, the decisive verification is: The refreshed fleet has the approved AMI ID and sufficient in-service instances throughout the replacement.

D:

The green target group passes readiness and smoke checks before the production listener sends requests to it. That result would help prove ecs traffic shifted releases, where the relevant action is: Use CodeDeploy blue/green with distinct ECS task sets and ALB target groups, then switch the listener to the healthy replacement. It does not establish this case's required outcome. For immutable auto scaling replacement, the decisive verification is: The refreshed fleet has the approved AMI ID and sufficient in-service instances throughout the replacement.

Question 326

A company must prevent resource launches in unapproved AWS Regions but its engineers can still use any Region with broad IAM roles.

What could most credibly go wrong under these conditions?

  1. An overly broad deny can break global services; no guardrail permits data and compute placement outside approved jurisdictions.
  2. Orphaned IAM users and long-lived credentials remain usable after an employee leaves the organization.
  3. Relying on one account's local Config dashboard hides violations that exist only in other accounts or Regions.
  4. Manual per-account provisioning leaves newly added workloads without mandatory baseline governance controls.

Explanation

Correct Answer

A:

An overly broad deny can break global services; no guardrail permits data and compute placement outside approved jurisdictions. This outcome arises from the mechanism in the situation: An organization-level condition can restrict regional actions broadly; exceptions are necessary for services whose endpoints or semantics are global. The corresponding mitigation is: Apply a carefully scoped AWS Organizations SCP region-deny guardrail with required global-service exceptions.

Incorrect Answers

B:

Orphaned IAM users and long-lived credentials remain usable after an employee leaves the organization. That is a credible concern for permission sets at scale, normally addressed by: Use IAM Identity Center federation and permission sets to assign centrally managed workforce access across accounts. It is not the primary failure mechanism described here. The relevant exposure is: An overly broad deny can break global services; no guardrail permits data and compute placement outside approved jurisdictions.

C:

Relying on one account's local Config dashboard hides violations that exist only in other accounts or Regions. That is a credible concern for multiaccount config aggregation, normally addressed by: Configure an AWS Config aggregator with the required organization and Region coverage and centrally review aggregated compliance. It is not the primary failure mechanism described here. The relevant exposure is: An overly broad deny can break global services; no guardrail permits data and compute placement outside approved jurisdictions.

D:

Manual per-account provisioning leaves newly added workloads without mandatory baseline governance controls. That is a credible concern for stacksets ou deployment, normally addressed by: Use service-managed CloudFormation StackSets with AWS Organizations targeting and automatic OU deployment where appropriate. It is not the primary failure mechanism described here. The relevant exposure is: An overly broad deny can break global services; no guardrail permits data and compute placement outside approved jurisdictions.

Question 327

A Git-based CI workflow outside AWS currently stores a highly privileged IAM access key for deployments in repository secrets.

Which solution should the DevOps engineer implement?

  1. Require an IAM permissions boundary on developer-created roles in addition to appropriately scoped identity policies.
  2. Use a supported OIDC federation trust or other short-lived credential exchange to assume a scoped AWS deployment role.
  3. Attach a least-privilege instance profile IAM role to EC2 and retrieve temporary credentials through the instance metadata service.
  4. Use tightly scoped STS role sessions with appropriate duration and session policies or tags for the incident-specific task.

Explanation

Correct Answer

B:

Use a supported OIDC federation trust or other short-lived credential exchange to assume a scoped AWS deployment role. Federated short-lived credentials avoid permanent key distribution and can constrain role assumption to a repository and workflow identity. The relevant operational proof is specific: Only approved workflow subjects can obtain STS credentials, which expire automatically and cannot access unrelated accounts.

Incorrect Answers

A:

Require an IAM permissions boundary on developer-created roles in addition to appropriately scoped identity policies. That would address permissions boundary delegation, because permissions boundaries limit the maximum permissions of the relevant IAM identity even if a developer grants broader identity-policy statements. However, the stated situation instead concerns temporary build credentials. Federated short-lived credentials avoid permanent key distribution and can constrain role assumption to a repository and workflow identity.

C:

Attach a least-privilege instance profile IAM role to EC2 and retrieve temporary credentials through the instance metadata service. That would address iam roles for workloads, because eC2 instance roles provide automatically rotated temporary credentials to supported workloads without storing AWS keys on disk. However, the stated situation instead concerns temporary build credentials. Federated short-lived credentials avoid permanent key distribution and can constrain role assumption to a repository and workflow identity.

D:

Use tightly scoped STS role sessions with appropriate duration and session policies or tags for the incident-specific task. That would address session scoped access, because temporary role sessions and session restrictions reduce privilege duration and target scope while keeping the actor accountable. However, the stated situation instead concerns temporary build credentials. Federated short-lived credentials avoid permanent key distribution and can constrain role assumption to a repository and workflow identity.

Question 328

An organization has a tested secondary regional API but operators manually edit DNS records during a disaster and regularly misroute traffic.

Which failure mode should the DevOps engineer prioritize?

  1. Without version history an accidental overwrite can permanently replace the only correct configuration state.
  2. Keeping only templates and backups may require provisioning time longer than the business's minute-level RTO.
  3. Encrypted backups that cannot be decrypted in the recovery environment are functionally unavailable during a regional incident.
  4. Manual emergency record edits delay recovery and a poorly scoped automation can direct customers to an unready standby.

Explanation

Correct Answer

D:

Manual emergency record edits delay recovery and a poorly scoped automation can direct customers to an unready standby. This outcome arises from the mechanism in the situation: Automated routing reduces operator error when the primary endpoint fails, but detection time and DNS cache behavior affect actual RTO. The corresponding mitigation is: Define health-aware Route 53 routing and failover runbooks or controlled automation with realistic resolver caching expectations.

Incorrect Answers

A:

Without version history an accidental overwrite can permanently replace the only correct configuration state. That is a credible concern for s3 versioned recovery, normally addressed by: Enable suitable S3 versioning and tightly controlled deletion and recovery procedures on critical configuration objects. It is not the primary failure mechanism described here. The relevant exposure is: Manual emergency record edits delay recovery and a poorly scoped automation can direct customers to an unready standby.

B:

Keeping only templates and backups may require provisioning time longer than the business's minute-level RTO. That is a credible concern for warm standby recovery, normally addressed by: Maintain a reduced-capacity warm standby with replicated data and automation to scale it during failover. It is not the primary failure mechanism described here. The relevant exposure is: Manual emergency record edits delay recovery and a poorly scoped automation can direct customers to an unready standby.

C:

Encrypted backups that cannot be decrypted in the recovery environment are functionally unavailable during a regional incident. That is a credible concern for kms keys in dr region, normally addressed by: Provision or select suitable recovery-Region KMS key policies and copy or re-encrypt recovery artifacts as required. It is not the primary failure mechanism described here. The relevant exposure is: Manual emergency record edits delay recovery and a poorly scoped automation can direct customers to an unready standby.

Question 329

A fleet emits JSON application logs, but responders download every log stream individually to find the error path common to a major outage.

Which action best meets the technical requirement?

  1. Review Amazon Inspector findings with severity, affected resource and exposure context, linking results to deployed artifact versions.
  2. Search CloudTrail management events with time, account, event name and user identity, preserving an appropriate audit trail.
  3. Instrument supported request paths for AWS X-Ray traces and inspect segments to isolate high-latency dependencies.
  4. Use CloudWatch Logs Insights queries to aggregate and filter relevant log fields across selected log groups and time ranges.

Explanation

Correct Answer

D:

Use CloudWatch Logs Insights queries to aggregate and filter relevant log fields across selected log groups and time ranges. Logs Insights supports interactive server-side queries that correlate large log sets without manual stream-by-stream exports. The relevant operational proof is specific: A time-bounded query returns the failing request IDs, exception counts and affected services from multiple streams.

Incorrect Answers

A:

Review Amazon Inspector findings with severity, affected resource and exposure context, linking results to deployed artifact versions. That would address inspector vulnerability context, because inspector discovers supported software vulnerabilities and exposure findings; prioritization requires matching findings to real workload use. However, the stated situation instead concerns cloudwatch logs insights. Logs Insights supports interactive server-side queries that correlate large log sets without manual stream-by-stream exports.

B:

Search CloudTrail management events with time, account, event name and user identity, preserving an appropriate audit trail. That would address cloudtrail management audit, because cloudTrail records AWS API management activity and identity context, connecting resource configuration changes to actor sessions. However, the stated situation instead concerns cloudwatch logs insights. Logs Insights supports interactive server-side queries that correlate large log sets without manual stream-by-stream exports.

C:

Instrument supported request paths for AWS X-Ray traces and inspect segments to isolate high-latency dependencies. That would address x ray trace latency, because distributed traces provide per-service latency context that aggregate endpoint duration cannot identify. However, the stated situation instead concerns cloudwatch logs insights. Logs Insights supports interactive server-side queries that correlate large log sets without manual stream-by-stream exports.

Question 330

A worker fleet has high message receive counts but little progress, and one payload repeatedly returns to the front of processing.

What result would most credibly prove that the control is effective?

  1. The problematic payload reaches the DLQ after policy threshold and normal message processing resumes without duplication.
  2. After repairing the image or registry permissions, the pods pull successfully and pass readiness checks.
  3. Capped connection pools or proxying keep active connections within safe limits and error rates fall under load.
  4. New tasks reach RUNNING with their intended digest after fixing the precise execution-role or network condition.

Explanation

Correct Answer

A:

The problematic payload reaches the DLQ after policy threshold and normal message processing resumes without duplication. It directly verifies the change: Inspect message processing errors and visibility timeout behavior, then isolate repeated failures in a DLQ for analysis. The test matters because sQS may redeliver messages after visibility timeout, so poison payloads must be handled separately from healthy work.

Incorrect Answers

B:

After repairing the image or registry permissions, the pods pull successfully and pass readiness checks. That result would help prove eks image pull errors, where the relevant action is: Inspect pod events, image reference, registry access and pull credentials before changing cluster scaling. It does not establish this case's required outcome. For sqs poison message triage, the decisive verification is: The problematic payload reaches the DLQ after policy threshold and normal message processing resumes without duplication.

C:

Capped connection pools or proxying keep active connections within safe limits and error rates fall under load. That result would help prove rds connection exhaustion, where the relevant action is: Correlate RDS DatabaseConnections, application connection pools and request concurrency to determine the saturation mechanism. It does not establish this case's required outcome. For sqs poison message triage, the decisive verification is: The problematic payload reaches the DLQ after policy threshold and normal message processing resumes without duplication.

D:

New tasks reach RUNNING with their intended digest after fixing the precise execution-role or network condition. That result would help prove ecs task startup failure, where the relevant action is: Inspect stopped-task reasons, ECR connectivity and the ECS task execution role's image-pull permissions. It does not establish this case's required outcome. For sqs poison message triage, the decisive verification is: The problematic payload reaches the DLQ after policy threshold and normal message processing resumes without duplication.

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