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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

Certification Provider: Amazon

Corresponding Certification: AWS Certified Solutions Architect - Professional

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Amazon AWS Certified Solutions Architect - Professional SAP-C02 Practice Test 37

Question 360

An enterprise architecture team faces this design requirement: Payment message consumers can fail repeatedly on one malformed message and must isolate it without blocking all valid messages. Which action would resolve the problem without adding unrelated capabilities?

  1. Configure SQS redrive policy with an appropriate dead-letter queue and maxReceiveCount
  2. Send eligible reads through the Aurora reader endpoint and provision suitable replica capacity
  3. Tune CloudFront cache policies and origin behavior to increase cache hits while honoring freshness limits
  4. Configure Route 53 failover routing with suitable health checks and a tested secondary target

Explanation

Correct Answer

A:

SQS dead-letter queues preserve failed messages for separate inspection and remediation. The required architecture outcome is: Payment message consumers can fail repeatedly on one malformed message and must isolate it without blocking all valid messages. Validate this choice by checking that A poison message goes to the DLQ after configured attempts while valid following messages proceed.

Incorrect Answers

B:

Every reporting query was sent to the cluster writer endpoint despite available readers. The specific problem here is that repeated retries of one failed message prevent useful error isolation and redrive workflow.

C:

The CDN forwards every request to origin due to ineffective cache keys or caching headers. The specific problem here is that repeated retries of one failed message prevent useful error isolation and redrive workflow.

D:

DNS simple routing cannot automatically reflect the application's health. The specific problem here is that repeated retries of one failed message prevent useful error isolation and redrive workflow.

Question 361

For the enterprise requirement "An application accesses S3 heavily from private VPC subnets and pays large NAT Gateway processing charges for those requests", the team implemented this change: Add an S3 gateway VPC endpoint and route supported S3 traffic privately rather than through NAT. Which observation should be required before the change is approved?

  1. A simulated interruption causes bounded rework and lowers total compute cost without losing final results
  2. Origin request count and cacheable transferred bytes fall without serving stale protected content
  3. NAT processed-byte charges for eligible S3 traffic fall while S3 requests still succeed under endpoint policy
  4. A rotation completes, the application authenticates with the new value, and old credentials are not exposed

Explanation

Correct Answer

C:

This measures the behavior required by the specific solution, rather than simply checking that it was configured. Gateway endpoints can avoid NAT traversal for eligible S3 and DynamoDB traffic. The acceptance condition is linked directly to the scenario: An application accesses S3 heavily from private VPC subnets and pays large NAT Gateway processing charges for those requests.

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: nAT processed-byte charges for eligible S3 traffic fall while S3 requests still succeed under endpoint policy.

B:

Origin request count and cacheable transferred bytes fall without serving stale protected content. However, this does not establish the required outcome: nAT processed-byte charges for eligible S3 traffic fall while S3 requests still succeed under endpoint policy.

D:

A rotation completes, the application authenticates with the new value, and old credentials are not exposed. However, this does not establish the required outcome: nAT processed-byte charges for eligible S3 traffic fall while S3 requests still succeed under endpoint policy.

Question 362

A deployed environment still does not meet the original requirement: An internal monolithic API has independently scalable request handlers and low idle traffic. Which failure mechanism should the team correct?

  1. Tight synchronous coupling propagates a noncritical downstream failure to the primary transaction
  2. The only purpose of a 24/7 server is occasional timer-based work
  3. Dedicated EC2 servers remain the scaling bottleneck for stateless containerized workloads
  4. Always-on monolith capacity is required merely to handle infrequent independent endpoints

Explanation

Correct Answer

D:

This is the technical design error aligned with the unmet requirement. Serverless APIs can separate scaling from continuously provisioned application servers. The appropriate correction is: Extract suitable endpoints to API Gateway and Lambda with explicit authentication, throttling and timeout controls. The control should then be tested by verifying that Isolated handlers scale according to request demand and meet p95 latency and authorization targets.

Incorrect Answers

A:

Tight synchronous coupling propagates a noncritical downstream failure to the primary transaction. The stated evidence instead indicates: Always-on monolith capacity is required merely to handle infrequent independent endpoints.

B:

The only purpose of a 24/7 server is occasional timer-based work. The stated evidence instead indicates: Always-on monolith capacity is required merely to handle infrequent independent endpoints.

C:

Dedicated EC2 servers remain the scaling bottleneck for stateless containerized workloads. The stated evidence instead indicates: Always-on monolith capacity is required merely to handle infrequent independent endpoints.

Question 363

A deployed environment still does not meet the original requirement: A central audit account needs immutable delivery of logs from all workload accounts and Regions. What original architectural gap most directly explains the failure?

  1. Every backup copy resides in the same administration boundary as the threatened workloads
  2. Events remain confined to local account buses because cross-account bus authorization is absent
  3. Local activity trails are not consolidated into the audit security boundary
  4. Each application team is provisioning its own disconnected backbone gateway

Explanation

Correct Answer

C:

This is the technical design error aligned with the unmet requirement. An organization trail and protected storage form a centralized account-wide auditing design. The appropriate correction is: Use organization-wide CloudTrail and central log storage with restrictive bucket access and retention controls. The control should then be tested by verifying that A new workload account's API activity appears in the central log bucket and member administrators cannot erase it.

Incorrect Answers

A:

Every backup copy resides in the same administration boundary as the threatened workloads. The stated evidence instead indicates: Local activity trails are not consolidated into the audit security boundary.

B:

Events remain confined to local account buses because cross-account bus authorization is absent. The stated evidence instead indicates: Local activity trails are not consolidated into the audit security boundary.

D:

Each application team is provisioning its own disconnected backbone gateway. The stated evidence instead indicates: Local activity trails are not consolidated into the audit security boundary.

Question 364

For the enterprise requirement "An Aurora-backed API has too many queries on the writer and wants to distribute read-only reporting traffic", the team implemented this change: Send eligible reads through the Aurora reader endpoint and provision suitable replica capacity. What would most directly validate the implementation?

  1. Read latency and writer CPU improve under reporting load without routing writes to read replicas
  2. Terminating all instances in one zone leaves healthy targets and Auto Scaling replaces lost capacity
  3. p95 latency and unit costs improve in a representative arm64 canary with all native libraries working
  4. New DNS lookups return the secondary endpoint after a primary health check changes to unhealthy

Explanation

Correct Answer

A:

This measures the behavior required by the specific solution, rather than simply checking that it was configured. Aurora reader endpoints balance connections to read replicas for read workloads. The acceptance condition is linked directly to the scenario: An Aurora-backed API has too many queries on the writer and wants to distribute read-only reporting traffic.

Incorrect Answers

B:

Terminating all instances in one zone leaves healthy targets and Auto Scaling replaces lost capacity. However, this does not establish the required outcome: read latency and writer CPU improve under reporting load without routing writes to read replicas.

C:

P95 latency and unit costs improve in a representative arm64 canary with all native libraries working. However, this does not establish the required outcome: read latency and writer CPU improve under reporting load without routing writes to read replicas.

D:

New DNS lookups return the secondary endpoint after a primary health check changes to unhealthy. However, this does not establish the required outcome: read latency and writer CPU improve under reporting load without routing writes to read replicas.

Question 365

A deployed environment still does not meet the original requirement: A global network has rising cross-AZ and inter-Region transfer bills despite healthy compute utilization. What explains why the stated requirement was not met?

  1. Passive regional copies exist without health-driven endpoint selection
  2. Potential savings from the same infrastructure change are double counted in separate reports
  3. Teams purchase more RIs independently without measuring existing shared coverage
  4. Workload service calls repeatedly cross paid network boundaries without quantified need

Explanation

Correct Answer

D:

This is the technical design error aligned with the unmet requirement. Placement and traffic pattern matter to data transfer costs as much as raw compute prices. The appropriate correction is: Analyze transfer usage in CUR and network metrics; redesign unnecessary cross-AZ chatty application flows. The control should then be tested by verifying that Data-transfer charges drop while latency and resilience objectives still pass.

Incorrect Answers

A:

Passive regional copies exist without health-driven endpoint selection. The stated evidence instead indicates: Workload service calls repeatedly cross paid network boundaries without quantified need.

B:

Potential savings from the same infrastructure change are double counted in separate reports. The stated evidence instead indicates: Workload service calls repeatedly cross paid network boundaries without quantified need.

C:

Teams purchase more RIs independently without measuring existing shared coverage. The stated evidence instead indicates: Workload service calls repeatedly cross paid network boundaries without quantified need.

Question 366

An architecture review recommends this solution: Use Cost Optimization Hub for supported consolidated recommendations and track deduplicated savings. The motivating situation is: Finance collects optimizer suggestions from Compute Optimizer, Trusted Advisor and cost dashboards but counts the same recommendation more than once. Which statement explains why the recommendation solves the specific problem?

  1. Consolidated savings recommendations should not be summed blindly across sources
  2. Enhanced networking capabilities require compatible instance types and operating-system drivers
  3. EBS storage billing continues for allocated volumes until they are deleted or otherwise changed
  4. Placement and traffic pattern matter to data transfer costs as much as raw compute prices

Explanation

Correct Answer

A:

This principle explains why the prescribed control is appropriate for the described requirement. The matching design action is: Use Cost Optimization Hub for supported consolidated recommendations and track deduplicated savings. The expected supporting evidence is: Finance reports one adjusted opportunity per overlapping recommendation source.

Incorrect Answers

B:

Unsupported drivers or unsuitable instance networking features cap throughput. The stated evidence instead indicates: Potential savings from the same infrastructure change are double counted in separate reports.

C:

Unattached volumes are treated as free merely because they are not mounted. The stated evidence instead indicates: Potential savings from the same infrastructure change are double counted in separate reports.

D:

Workload service calls repeatedly cross paid network boundaries without quantified need. The stated evidence instead indicates: Potential savings from the same infrastructure change are double counted in separate reports.

Question 367

A deployed environment still does not meet the original requirement: A legacy application has a few-hour RTO but cannot justify running the complete secondary stack continuously. What design flaw is the best match for the reported condition?

  1. Every component must be rebuilt from scratch after failure, despite a tighter RTO
  2. Repeated retries of one failed message prevent useful error isolation and redrive workflow
  3. A backup exists but no restore procedure or measured restore duration has been proven
  4. The destination bucket is present but replication cannot use the destination KMS key

Explanation

Correct Answer

A:

This is the technical design error aligned with the unmet requirement. Pilot light retains critical replicated services while reconstructing additional capacity during recovery. The appropriate correction is: Maintain a pilot-light copy of the essential data and core services and automate remaining capacity restoration. The control should then be tested by verifying that A drill scales the secondary stack from its minimal footprint within the agreed RTO.

Incorrect Answers

B:

Repeated retries of one failed message prevent useful error isolation and redrive workflow. The stated evidence instead indicates: Every component must be rebuilt from scratch after failure, despite a tighter RTO.

C:

A backup exists but no restore procedure or measured restore duration has been proven. The stated evidence instead indicates: Every component must be rebuilt from scratch after failure, despite a tighter RTO.

D:

The destination bucket is present but replication cannot use the destination KMS key. The stated evidence instead indicates: Every component must be rebuilt from scratch after failure, despite a tighter RTO.

Question 368

For the enterprise requirement "Two regional Transit Gateways must exchange approved network prefixes without provisioning a separate VPC-to-VPC peering mesh", the team implemented this change: Establish a Transit Gateway peering attachment and add the appropriate static routes in both Transit Gateway route tables. Which evidence confirms the intended behavior under test?

  1. Traffic uses translated unique endpoint addresses and return packets reach the original client correctly
  2. Queries from on-premises resolvers return the expected private-zone records through inbound endpoint addresses
  3. Employees sign in using enterprise identities and receive only the mapped roles in assigned accounts
  4. Traffic crosses the regional peering attachment only for specifically installed and approved prefixes

Explanation

Correct Answer

D:

This measures the behavior required by the specific solution, rather than simply checking that it was configured. Transit Gateway peering requires explicit routing between the regional gateways. The acceptance condition is linked directly to the scenario: Two regional Transit Gateways must exchange approved network prefixes without provisioning a separate VPC-to-VPC peering mesh.

Incorrect Answers

A:

Traffic uses translated unique endpoint addresses and return packets reach the original client correctly. However, this does not establish the required outcome: traffic crosses the regional peering attachment only for specifically installed and approved prefixes.

B:

Queries from on-premises resolvers return the expected private-zone records through inbound endpoint addresses. However, this does not establish the required outcome: traffic crosses the regional peering attachment only for specifically installed and approved prefixes.

C:

Employees sign in using enterprise identities and receive only the mapped roles in assigned accounts. However, this does not establish the required outcome: traffic crosses the regional peering attachment only for specifically installed and approved prefixes.

Question 369

A deployed environment still does not meet the original requirement: Business records must remain tamper-resistant during the retention period even if a security administrator compromises a backup account. Which root cause is most consistent with the observation?

  1. No event archive exists to replay notifications that failed during downstream processing
  2. Records use ordinary simple routing without failover health awareness
  3. Backup administrators can freely delete critical recovery points despite required immutability
  4. Every component must be rebuilt from scratch after failure, despite a tighter RTO

Explanation

Correct Answer

C:

This is the technical design error aligned with the unmet requirement. Backup Vault Lock compliance controls can enforce retained recovery-point immutability. The appropriate correction is: Configure protected AWS Backup Vault Lock compliance settings with appropriate retention and access governance. The control should then be tested by verifying that An unauthorized attempt to delete a protected recovery point is denied before retention expires.

Incorrect Answers

A:

No event archive exists to replay notifications that failed during downstream processing. The stated evidence instead indicates: Backup administrators can freely delete critical recovery points despite required immutability.

B:

Records use ordinary simple routing without failover health awareness. The stated evidence instead indicates: Backup administrators can freely delete critical recovery points despite required immutability.

D:

Every component must be rebuilt from scratch after failure, despite a tighter RTO. The stated evidence instead indicates: Backup administrators can freely delete critical recovery points despite required immutability.

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.