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Amazon AWS Certified Solutions Architect - Professional SAP-C02 Bundle

Exam Code: AWS Certified Solutions Architect - Professional SAP-C02

Exam Name AWS Certified Solutions Architect - Professional SAP-C02

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Corresponding Certification: AWS Certified Solutions Architect - Professional

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Amazon AWS Certified Solutions Architect - Professional SAP-C02 Practice Test 38

Question 370

An enterprise architecture team faces this design requirement: A shared EFS file system slows a data-processing batch even though compute workers are mostly idle. What should the solutions architect recommend?

  1. Configure CloudFront caching with appropriate TTL, cache keys and regional origin controls
  2. Publish a Lambda version and configure weighted alias routing with deployment alarms
  3. Adjust stream capacity mode or shard count and confirm partition key distribution
  4. Evaluate EFS throughput and performance modes and provision an appropriate supported throughput setting

Explanation

Correct Answer

D:

EFS throughput characteristics must match concurrent IO patterns and required sustained rate. The required architecture outcome is: A shared EFS file system slows a data-processing batch even though compute workers are mostly idle. Validate this choice by checking that File-system throughput reaches target under representative concurrent processing without exhausted credits.

Incorrect Answers

A:

Every static asset fetch goes to a distant origin instead of the edge cache. The specific problem here is that the shared file system's throughput mode or credit availability constrains parallel clients.

B:

The function's unqualified ARN always invokes latest code for all users, bypassing version routing. The specific problem here is that the shared file system's throughput mode or credit availability constrains parallel clients.

C:

Stream shard limits or skewed partition keys cannot handle incoming record throughput. The specific problem here is that the shared file system's throughput mode or credit availability constrains parallel clients.

Question 371

A professional architect is reviewing two independent workstreams. Requirement A: A transactional RDS workload must automatically fail over within the Region on an AZ failure. Requirement B: A reporting dashboard overloads a relational database primary with read queries but still requires strongly controlled write ownership. Choose TWO remedies that meet A and B respectively.

  1. Define API Gateway throttling limits and usage or monitoring controls that match allowed request rates
  2. Add supported RDS read replicas and route eventually consistent reporting reads away from the writer
  3. Use weighted Route 53 or application load balancer traffic shifting with monitored cutover and rollback criteria
  4. Use ElastiCache Redis/Valkey-compatible cache with a suitable eviction and high-availability design
  5. Deploy a supported RDS Multi-AZ configuration and verify connection retry and DNS handling

Explanation

Correct Answers

B:

This action meets the independently stated requirement B: A reporting dashboard overloads a relational database primary with read queries but still requires strongly controlled write ownership. RDS read replicas scale read throughput but are asynchronous relative to the primary. A direct acceptance check is: Writer CPU usage decreases while lag-tolerant reporting requests use replica endpoints.

E:

This action meets the independently stated requirement A: A transactional RDS workload must automatically fail over within the Region on an AZ failure. RDS Multi-AZ provides standby capacity for automated intra-Region failover, not read scaling by itself. A direct acceptance check is: Zonal failover promotes a standby and the application reconnects after the expected interruption.

Incorrect Answers

A:

This action targets a different technical need: A shared API must protect downstream capacity during a request spike without losing monitoring of throttled clients. It does not replace either required solution in A or B. API Gateway throttle controls bound request rates but callers should handle 429 responses; verify the two stated requirements independently rather than accepting an unrelated change.

C:

This action targets a different technical need: A brownfield workload must shift gradually from a legacy load balancer to a new service while preserving rollback. It does not replace either required solution in A or B. Weighted routing can support staged migration when health checks and client caching are considered; verify the two stated requirements independently rather than accepting an unrelated change.

D:

This action targets a different technical need: A high-throughput session API must share ephemeral session data among multiple application instances without database round trips. It does not replace either required solution in A or B. A shared in-memory cache reduces backend read pressure when expiry and failure behavior are designed; verify the two stated requirements independently rather than accepting an unrelated change.

Question 372

A deployed environment still does not meet the original requirement: A global web application must fail over to a secondary Region if the primary public endpoint becomes unhealthy. What design flaw is the best match for the reported condition?

  1. Individual Security Hub instances were not centrally delegated or aggregated
  2. Only source-region S3 versioning is enabled, but no replication rule or role exists
  3. The backup Region exists but DNS routing never changes after primary endpoint failure
  4. Synchronous request-to-database coupling loses or rejects work whenever the database is unavailable

Explanation

Correct Answer

C:

This is the technical design error aligned with the unmet requirement. Route 53 health-check failover can redirect future DNS resolutions between operational regional endpoints. The appropriate correction is: Use Route 53 failover records with health checks and independently deployed regional stacks. The control should then be tested by verifying that A synthetic endpoint failure directs new DNS resolutions to the secondary healthy stack within the planned TTL behavior.

Incorrect Answers

A:

Individual Security Hub instances were not centrally delegated or aggregated. The stated evidence instead indicates: The backup Region exists but DNS routing never changes after primary endpoint failure.

B:

Only source-region S3 versioning is enabled, but no replication rule or role exists. The stated evidence instead indicates: The backup Region exists but DNS routing never changes after primary endpoint failure.

D:

Synchronous request-to-database coupling loses or rejects work whenever the database is unavailable. The stated evidence instead indicates: The backup Region exists but DNS routing never changes after primary endpoint failure.

Question 373

A deployed environment still does not meet the original requirement: A producer account encrypts S3 objects under its KMS key and a distinct consumer role must decrypt those objects cross-account. What explains why the stated requirement was not met?

  1. Individual IAM users were being created per account instead of using centralized workforce federation
  2. The remote principal has S3 object access but lacks required key-policy and IAM decrypt permission
  3. Summary monthly bills lack the resource-level usage detail needed for chargeback
  4. Individual Security Hub instances were not centrally delegated or aggregated

Explanation

Correct Answer

B:

This is the technical design error aligned with the unmet requirement. Cross-account KMS use requires authorization from the key-owning account and the requesting principal. The appropriate correction is: Update the key policy and consumer IAM permissions for the cross-account principal, alongside S3 access authorization. The control should then be tested by verifying that The consumer role reads approved encrypted objects but cannot decrypt other protected datasets.

Incorrect Answers

A:

Individual IAM users were being created per account instead of using centralized workforce federation. The stated evidence instead indicates: The remote principal has S3 object access but lacks required key-policy and IAM decrypt permission.

C:

Summary monthly bills lack the resource-level usage detail needed for chargeback. The stated evidence instead indicates: The remote principal has S3 object access but lacks required key-policy and IAM decrypt permission.

D:

Individual Security Hub instances were not centrally delegated or aggregated. The stated evidence instead indicates: The remote principal has S3 object access but lacks required key-policy and IAM decrypt permission.

Question 374

For the enterprise requirement "A distributed transaction takes too long but the application log contains no per-hop timing breakdown", the team implemented this change: Instrument eligible application components with AWS X-Ray tracing or supported distributed tracing correlation. Which evidence confirms the intended behavior under test?

  1. Unauthorized execution is blocked and approved changes have associated audit evidence
  2. A test transaction shows the slow downstream dependency and request trace span timing
  3. Restored datasets pass consistency and application startup checks within the recovery target
  4. An incident view identifies the affected service and response latency rather than just total fleet CPU

Explanation

Correct Answer

B:

This measures the behavior required by the specific solution, rather than simply checking that it was configured. Distributed tracing provides span-level request-path visibility across instrumented services. The acceptance condition is linked directly to the scenario: A distributed transaction takes too long but the application log contains no per-hop timing breakdown.

Incorrect Answers

A:

Unauthorized execution is blocked and approved changes have associated audit evidence. However, this does not establish the required outcome: a test transaction shows the slow downstream dependency and request trace span timing.

C:

Restored datasets pass consistency and application startup checks within the recovery target. However, this does not establish the required outcome: a test transaction shows the slow downstream dependency and request trace span timing.

D:

An incident view identifies the affected service and response latency rather than just total fleet CPU. However, this does not establish the required outcome: a test transaction shows the slow downstream dependency and request trace span timing.

Question 375

A deployed environment still does not meet the original requirement: Internal mTLS certificates for services must be issued under a private organizational trust root with controlled rotation. Which underlying cause should be investigated first?

  1. An overly broad assumed-role session is not constrained to the vendor's assigned resources
  2. Public ACM-issued certificates were wrongly assumed to provide a corporate private CA chain
  3. Static budgets cannot explain or detect each atypical spend pattern promptly
  4. Disjoint local-account trails leave central auditors with incomplete visibility

Explanation

Correct Answer

B:

This is the technical design error aligned with the unmet requirement. AWS Private CA supports private certificate authorities for internal certificate issuance. The appropriate correction is: Use AWS Private CA to issue private certificates with a managed trust chain and documented renewal. The control should then be tested by verifying that A client trusts the correct private CA chain and rejects a certificate issued outside that trust.

Incorrect Answers

A:

An overly broad assumed-role session is not constrained to the vendor's assigned resources. The stated evidence instead indicates: Public ACM-issued certificates were wrongly assumed to provide a corporate private CA chain.

C:

Static budgets cannot explain or detect each atypical spend pattern promptly. The stated evidence instead indicates: Public ACM-issued certificates were wrongly assumed to provide a corporate private CA chain.

D:

Disjoint local-account trails leave central auditors with incomplete visibility. The stated evidence instead indicates: Public ACM-issued certificates were wrongly assumed to provide a corporate private CA chain.

Question 376

For the enterprise requirement "Customer-uploaded S3 objects must appear in a second Region for durability and region-isolation objectives", the team implemented this change: Enable S3 Cross-Region Replication with correct versioning, role permissions and ownership controls. Which result specifically demonstrates the fix works?

  1. A drilled failover boots recoverable instances and meets tested recovery objectives and dependency order
  2. Accepted messages remain durable during database downtime and are eventually processed when consumers recover
  3. Newly created and eligible changed objects arrive in the destination bucket with expected encryption
  4. The delegated administrator can manage enrolled member security coverage within its supported scope

Explanation

Correct Answer

C:

This measures the behavior required by the specific solution, rather than simply checking that it was configured. Cross-Region Replication asynchronously copies eligible objects between configured buckets. The acceptance condition is linked directly to the scenario: Customer-uploaded S3 objects must appear in a second Region for durability and region-isolation objectives.

Incorrect Answers

A:

A drilled failover boots recoverable instances and meets tested recovery objectives and dependency order. However, this does not establish the required outcome: newly created and eligible changed objects arrive in the destination bucket with expected encryption.

B:

Accepted messages remain durable during database downtime and are eventually processed when consumers recover. However, this does not establish the required outcome: newly created and eligible changed objects arrive in the destination bucket with expected encryption.

D:

The delegated administrator can manage enrolled member security coverage within its supported scope. However, this does not establish the required outcome: newly created and eligible changed objects arrive in the destination bucket with expected encryption.

Question 377

A deployed environment still does not meet the original requirement: Legal and nonproduction workloads require different organizational guardrails but must share central billing. What explains why the stated requirement was not met?

  1. Each business unit manually maintains duplicative IAM users in workload accounts
  2. No archive or retention mechanism was configured before the subscriber outage
  3. All accounts share one indiscriminate service-control policy despite different risk profiles
  4. New accounts are assembled by ad hoc scripts with inconsistent security baselines

Explanation

Correct Answer

C:

This is the technical design error aligned with the unmet requirement. Organizational units help assign governance boundaries to related member accounts. The appropriate correction is: Use distinct AWS Organizations organizational units and apply targeted service control policies per OU. The control should then be tested by verifying that Production account requests are governed by the intended production policy and sandbox accounts by their own boundaries.

Incorrect Answers

A:

Each business unit manually maintains duplicative IAM users in workload accounts. The stated evidence instead indicates: All accounts share one indiscriminate service-control policy despite different risk profiles.

B:

No archive or retention mechanism was configured before the subscriber outage. The stated evidence instead indicates: All accounts share one indiscriminate service-control policy despite different risk profiles.

D:

New accounts are assembled by ad hoc scripts with inconsistent security baselines. The stated evidence instead indicates: All accounts share one indiscriminate service-control policy despite different risk profiles.

Question 378

For the enterprise requirement "A rarely used API experiences extreme idle hours and unpredictable spikes, making always-on EC2 capacity uneconomic", the team implemented this change: Evaluate a serverless API Gateway and Lambda architecture with cold-start and concurrency testing. Which outcome is the most meaningful acceptance test?

  1. A simulated interruption causes bounded rework and lowers total compute cost without losing final results
  2. The resulting image has verified packages, a traceable version and permitted availability in target accounts
  3. The API meets latency SLOs under bursts and incurs low idle compute spend without permanently allocated hosts
  4. Storage-class distribution follows observed access and availability constraints without extensive manual classification

Explanation

Correct Answer

C:

This measures the behavior required by the specific solution, rather than simply checking that it was configured. Serverless consumption models can reduce idle infrastructure charges for intermittent traffic. The acceptance condition is linked directly to the scenario: A rarely used API experiences extreme idle hours and unpredictable spikes, making always-on EC2 capacity uneconomic.

Incorrect Answers

A:

A simulated interruption causes bounded rework and lowers total compute cost without losing final results. However, this does not establish the required outcome: the API meets latency SLOs under bursts and incurs low idle compute spend without permanently allocated hosts.

B:

The resulting image has verified packages, a traceable version and permitted availability in target accounts. However, this does not establish the required outcome: the API meets latency SLOs under bursts and incurs low idle compute spend without permanently allocated hosts.

D:

Storage-class distribution follows observed access and availability constraints without extensive manual classification. However, this does not establish the required outcome: the API meets latency SLOs under bursts and incurs low idle compute spend without permanently allocated hosts.

Question 379

A deployed environment still does not meet the original requirement: Two Regions are deployed but customer requests stay routed to the failed primary endpoint indefinitely. What original architectural gap most directly explains the failure?

  1. Passive regional copies exist without health-driven endpoint selection
  2. Resource-based trust was not evaluated beyond local IAM identity permission reports
  3. The application is exposed to one database host or zonal compute failure
  4. Availability claims rest only on architecture diagrams, not controlled chaos evidence

Explanation

Correct Answer

A:

This is the technical design error aligned with the unmet requirement. DNS failover needs a health-signal and routing policy that actually switches answers. The appropriate correction is: Configure and verify Route 53 failover records with endpoint health checks and explicit secondary routing. The control should then be tested by verifying that After a simulated endpoint failure, new DNS queries return the secondary healthy Region.

Incorrect Answers

B:

Resource-based trust was not evaluated beyond local IAM identity permission reports. The stated evidence instead indicates: Passive regional copies exist without health-driven endpoint selection.

C:

The application is exposed to one database host or zonal compute failure. The stated evidence instead indicates: Passive regional copies exist without health-driven endpoint selection.

D:

Availability claims rest only on architecture diagrams, not controlled chaos evidence. The stated evidence instead indicates: Passive regional copies exist without health-driven endpoint selection.

Question 380

A deployed environment still does not meet the original requirement: An application accesses S3 heavily from private VPC subnets and pays large NAT Gateway processing charges for those requests. What design flaw is the best match for the reported condition?

  1. The CDN forwards every request to origin due to ineffective cache keys or caching headers
  2. Stable compute baseline is paid at on-demand rates without analyzed commitments
  3. S3 calls egress through NAT because no supported endpoint route was configured
  4. Single-AZ database storage and compute are a single zonal failure domain

Explanation

Correct Answer

C:

This is the technical design error aligned with the unmet requirement. Gateway endpoints can avoid NAT traversal for eligible S3 and DynamoDB traffic. The appropriate correction is: Add an S3 gateway VPC endpoint and route supported S3 traffic privately rather than through NAT. The control should then be tested by verifying that NAT processed-byte charges for eligible S3 traffic fall while S3 requests still succeed under endpoint policy.

Incorrect Answers

A:

The CDN forwards every request to origin due to ineffective cache keys or caching headers. The stated evidence instead indicates: S3 calls egress through NAT because no supported endpoint route was configured.

B:

Stable compute baseline is paid at on-demand rates without analyzed commitments. The stated evidence instead indicates: S3 calls egress through NAT because no supported endpoint route was configured.

D:

Single-AZ database storage and compute are a single zonal failure domain. The stated evidence instead indicates: S3 calls egress through NAT because no supported endpoint route was configured.