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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 26

Question 250

An enterprise architecture team faces this design requirement: A global enterprise wants a portfolio-level view of application migrations, owners, blockers and cutover states. What should the solutions architect recommend?

  1. Perform application dependency discovery and group connected workloads into migration waves
  2. Modernize to an appropriately configured Amazon Aurora cluster with multi-AZ storage and tested failover
  3. Track AWS Transform migration wave and server states, and maintain centrally owned application milestones, blockers and cutover decisions
  4. Assess schema, procedural conversion complexity and application query compatibility using suitable database migration assessment tools

Explanation

Correct Answer

C:

A centralized migration tracking layer supports coordination across application teams. The required architecture outcome is: A global enterprise wants a portfolio-level view of application migrations, owners, blockers and cutover states. Validate this choice by checking that Owners can trace migration milestones and blockers for each workload without conflicting local spreadsheets.

Incorrect Answers

A:

Application lists omit runtime call dependencies and produce broken split-wave migrations. The specific problem here is that migration tasks are tracked in separate team documents with no common portfolio state.

B:

Application reliability still depends on one unmanaged database host and manual restores. The specific problem here is that migration tasks are tracked in separate team documents with no common portfolio state.

D:

Database engine migration was assumed to be a simple homogeneous replication job. The specific problem here is that migration tasks are tracked in separate team documents with no common portfolio state.

Question 251

An architecture review recommends this solution: Introduce DynamoDB DAX for supported cacheable read paths and check data freshness requirements. The motivating situation is: A product catalog on DynamoDB receives many repeated eventually consistent key lookups and requires microsecond cache responses. Why is this architecture appropriate for the described workload?

  1. Global Accelerator accelerates supported TCP/UDP applications without serving as an HTTP content cache
  2. Kinesis stream performance depends on provisioned or on-demand capacity and balanced partition keys
  3. DAX offers managed in-memory caching for eligible DynamoDB read workloads
  4. VPC endpoints provide private connectivity to supported AWS services inside defined network and policy controls

Explanation

Correct Answer

C:

This principle explains why the prescribed control is appropriate for the described requirement. The matching design action is: Introduce DynamoDB DAX for supported cacheable read paths and check data freshness requirements. The expected supporting evidence is: The repeated key lookup hits DAX with lower latency while noncacheable paths use the underlying table.

Incorrect Answers

A:

Region-specific public IPs and DNS routing do not provide the needed global anycast transport optimization. The stated evidence instead indicates: Every read request traverses the backing DynamoDB service despite highly reusable cacheable data.

B:

Stream shard limits or skewed partition keys cannot handle incoming record throughput. The stated evidence instead indicates: Every read request traverses the backing DynamoDB service despite highly reusable cacheable data.

D:

Service API traffic depends on public egress or an unintended NAT route despite a private-access requirement. The stated evidence instead indicates: Every read request traverses the backing DynamoDB service despite highly reusable cacheable data.

Question 252

A professional architect is reviewing two independent workstreams. Requirement A: A large retail monolith has tightly coupled inventory, checkout and customer modules that scale as one deployment. Requirement B: A corporation has hundreds of interdependent on-premises services and cannot establish which databases must move together. Select TWO independent changes that meet the named requirements.

  1. Perform application dependency discovery and group connected workloads into migration waves
  2. Identify bounded contexts and isolate independently deployable modules with explicit APIs and data ownership
  3. Classify applications through a defined 7 Rs migration assessment with business value, risk and retirement criteria
  4. Apply the strangler pattern, routing one well-defined capability at a time to a tested new service
  5. Build a governed S3-centered data lake with AWS Glue metadata and appropriate analytics services

Explanation

Correct Answers

A:

This action meets the independently stated requirement B: A corporation has hundreds of interdependent on-premises services and cannot establish which databases must move together. Dependency mapping reduces migration risk by revealing the actual application interaction graph. A direct acceptance check is: Each proposed migration wave includes dependencies required for a functional smoke test.

B:

This action meets the independently stated requirement A: A large retail monolith has tightly coupled inventory, checkout and customer modules that scale as one deployment. Domain-aligned service boundaries require APIs and deliberate data ownership separation. A direct acceptance check is: Inventory changes can deploy without forcing unrelated checkout and customer workflows through full regression.

Incorrect Answers

C:

This action targets a different technical need: Executives request one default migration method for every workload regardless of technical debt or value. It does not replace either required solution in A or B. The 7 Rs decision framework matches migration strategy to application context; verify the two stated requirements independently rather than accepting an unrelated change.

D:

This action targets a different technical need: A legacy monolith must be separated into business capabilities gradually without taking a risky one-time rewrite. It does not replace either required solution in A or B. Incremental strangler migration reduces cutover risk through bounded feature replacement; verify the two stated requirements independently rather than accepting an unrelated change.

E:

This action targets a different technical need: A legacy reporting ETL cluster requires durable raw data sharing and easier scale-out queries across departments. It does not replace either required solution in A or B. A shared governed object-storage lake decouples data retention from individual processing engines; verify the two stated requirements independently rather than accepting an unrelated change.

Question 253

An enterprise architecture team faces this design requirement: A transactional RDS instance becomes slow under concurrency and the team needs to distinguish SQL waits from CPU pressure. What design change should the team implement?

  1. Define service level indicators and targets in CloudWatch dashboards and alarms grounded in request success and p95 latency
  2. Select an appropriate EBS gp3 volume with independently provisioned performance settings and test application throughput
  3. Use CloudWatch Database Insights to identify RDS database load by SQL statements and wait events before changing capacity
  4. Review capacity provider strategy, instance-type resources and task placement requirements

Explanation

Correct Answer

C:

Database performance diagnostics should identify the specific bottleneck before scaling. The required architecture outcome is: A transactional RDS instance becomes slow under concurrency and the team needs to distinguish SQL waits from CPU pressure. Validate this choice by checking that The dominant query wait events can be linked to the observed transaction latency.

Incorrect Answers

A:

Engineers measure host utilization but not the outcomes experienced by users. The specific problem here is that engineers scale CPU without analyzing database lock waits or expensive SQL.

B:

Gp2 capacity-linked performance assumptions lead to wasteful storage growth. The specific problem here is that engineers scale CPU without analyzing database lock waits or expensive SQL.

D:

Cluster compute totals are misleading because the needed task resources are not schedulable. The specific problem here is that engineers scale CPU without analyzing database lock waits or expensive SQL.

Question 254

A deployed environment still does not meet the original requirement: A legacy orchestration service uses long polling and manual rollback scripts for multistep fulfillment. Which missing control accounts for the continuing issue?

  1. The only purpose of a 24/7 server is occasional timer-based work
  2. Shared data and internal method calls prevent independent deployment and scale
  3. A direct S3 SDK rewrite was imposed on workloads that cannot change their file interface
  4. Workflow state and failure recovery are hidden in fragile custom imperative scripts

Explanation

Correct Answer

D:

This is the technical design error aligned with the unmet requirement. Managed workflow orchestration makes retries, errors and compensation explicit. The appropriate correction is: Replace suitable stages with Step Functions orchestration and explicit retry, compensation and visibility states. The control should then be tested by verifying that A forced downstream failure follows tested compensation logic without duplicating completed orders.

Incorrect Answers

A:

The only purpose of a 24/7 server is occasional timer-based work. The stated evidence instead indicates: Workflow state and failure recovery are hidden in fragile custom imperative scripts.

B:

Shared data and internal method calls prevent independent deployment and scale. The stated evidence instead indicates: Workflow state and failure recovery are hidden in fragile custom imperative scripts.

C:

A direct S3 SDK rewrite was imposed on workloads that cannot change their file interface. The stated evidence instead indicates: Workflow state and failure recovery are hidden in fragile custom imperative scripts.

Question 255

An enterprise architecture team faces this design requirement: A global static web application experiences high latency because users repeatedly fetch unchanged assets from one Region. What is the most appropriate design for this workload?

  1. Configure CloudFront caching with appropriate TTL, cache keys and regional origin controls
  2. Configure Global Accelerator listeners and healthy regional ALB or NLB endpoints
  3. Configure EventBridge archives and event replay with selection patterns and measured retention
  4. Add supported RDS read replicas and route eventually consistent reporting reads away from the writer

Explanation

Correct Answer

A:

CloudFront edge caching reduces origin fetches for cacheable content. The required architecture outcome is: A global static web application experiences high latency because users repeatedly fetch unchanged assets from one Region. Validate this choice by checking that Cache hit ratio increases and p95 download latency improves across distant test locations.

Incorrect Answers

B:

Region-specific public IPs and DNS routing do not provide the needed global anycast transport optimization. The specific problem here is that every static asset fetch goes to a distant origin instead of the edge cache.

C:

No event archive exists to replay notifications that failed during downstream processing. The specific problem here is that every static asset fetch goes to a distant origin instead of the edge cache.

D:

Read-only analytical traffic saturates the production database's single writable instance. The specific problem here is that every static asset fetch goes to a distant origin instead of the edge cache.

Question 256

A professional architect is reviewing two independent workstreams. Requirement A: A company has shared Reserved Instances in its payer organization and wants to quantify benefit distribution across linked accounts. Requirement B: A company uses Direct Connect for normal hybrid traffic but needs encrypted emergency connectivity if carrier circuits fail. Choose TWO actions that directly address these separate problems.

  1. Export AWS Cost and Usage Reports to S3 and query them with Athena or a billing data analysis workflow
  2. Use AWS Organizations backup policies with verified account opt-in, vaults and access controls
  3. Configure redundant site-to-site VPN tunnels as the tested backup to the Direct Connect path
  4. Analyze organization-wide RI utilization and coverage using consolidated billing reports
  5. Deploy Route 53 Resolver inbound endpoints and configure corporate conditional DNS forwarding for the private zone

Explanation

Correct Answers

C:

This action meets the independently stated requirement B: A company uses Direct Connect for normal hybrid traffic but needs encrypted emergency connectivity if carrier circuits fail. A tested secondary encrypted tunnel path can carry critical traffic while primary private connectivity is unavailable. A direct acceptance check is: A simulated Direct Connect failure moves approved routes to VPN tunnels and restore reverses route preference.

D:

This action meets the independently stated requirement A: A company has shared Reserved Instances in its payer organization and wants to quantify benefit distribution across linked accounts. Consolidated billing can share eligible reservations across member accounts subject to sharing settings. A direct acceptance check is: Shared applicable discounts and uncovered on-demand baseline are visible by linked account.

Incorrect Answers

A:

This action targets a different technical need: An enterprise wants line-item chargeback for data transfer and service usage across hundreds of accounts. It does not replace either required solution in A or B. The Cost and Usage Report provides detailed billing facts for accountable cost analysis; verify the two stated requirements independently rather than accepting an unrelated change.

B:

This action targets a different technical need: Critical backups must be scheduled consistently across many application accounts and retained by policy. It does not replace either required solution in A or B. Organization backup policies support common baseline definitions but still require functioning target configuration; verify the two stated requirements independently rather than accepting an unrelated change.

E:

This action targets a different technical need: On-premises servers must resolve names in a private Route 53 hosted zone without exposing those records publicly. It does not replace either required solution in A or B. Inbound Resolver endpoints enable hybrid clients to ask VPC-associated private-zone DNS questions; verify the two stated requirements independently rather than accepting an unrelated change.

Question 257

An enterprise architecture team faces this design requirement: An order orchestration needs safe retry handling for transient service failures without rerunning completed prior steps. Which selection is defensible under the given constraints?

  1. Deploy a supported RDS Multi-AZ configuration and verify connection retry and DNS handling
  2. Use ElastiCache Redis/Valkey-compatible cache with a suitable eviction and high-availability design
  3. Define AWS Step Functions state-machine Retry and Catch behavior with idempotent service tasks
  4. Configure EventBridge archives and event replay with selection patterns and measured retention

Explanation

Correct Answer

C:

Step Functions supports explicit state-level retry and error handling but side effects still require idempotency. The required architecture outcome is: An order orchestration needs safe retry handling for transient service failures without rerunning completed prior steps. Validate this choice by checking that A simulated transient error is retried according to policy and a persistent error follows a defined failure branch.

Incorrect Answers

A:

Single-AZ database storage and compute are a single zonal failure domain. The specific problem here is that imperative glue retries all upstream steps and creates duplicate side effects.

B:

Instance-local caches cannot share consistent ephemeral state across horizontally scaled hosts. The specific problem here is that imperative glue retries all upstream steps and creates duplicate side effects.

D:

No event archive exists to replay notifications that failed during downstream processing. The specific problem here is that imperative glue retries all upstream steps and creates duplicate side effects.

Question 258

An architecture review recommends this solution: Run service tasks across multiple AZs with compatible load balancing and spare or scaling capacity. The motivating situation is: A container service must restore capacity after an AZ outage without manually replacing individual EC2 instances. Why does this approach fit the stated design constraints?

  1. Gateway endpoints can avoid NAT traversal for eligible S3 and DynamoDB traffic
  2. Multi-AZ task placement and auto healing support zonal continuity for stateless applications
  3. Pilot light retains critical replicated services while reconstructing additional capacity during recovery
  4. Cross-Region read replicas are asynchronous and may require explicit promotion in recovery

Explanation

Correct Answer

B:

This principle explains why the prescribed control is appropriate for the described requirement. The matching design action is: Run service tasks across multiple AZs with compatible load balancing and spare or scaling capacity. The expected supporting evidence is: The load balancer continues serving from healthy remaining tasks during a forced zone failure.

Incorrect Answers

A:

S3 calls egress through NAT because no supported endpoint route was configured. The stated evidence instead indicates: All containers share a single placement failure domain and cannot be rescheduled in time.

C:

Every component must be rebuilt from scratch after failure, despite a tighter RTO. The stated evidence instead indicates: All containers share a single placement failure domain and cannot be rescheduled in time.

D:

A standard read replica is assumed to be a synchronous multi-Region failover mechanism without promotion. The stated evidence instead indicates: All containers share a single placement failure domain and cannot be rescheduled in time.

Question 259

For the enterprise requirement "A corporate SOC needs one prioritized security findings view across enabled security services and Regions", the team implemented this change: Enable Security Hub delegated administration and finding aggregation for the target accounts and Regions. Which test result proves this architecture satisfies its stated constraint?

  1. An incident view identifies the affected service and response latency rather than just total fleet CPU
  2. Team A reads only its permitted dataset and an attempt to fetch team B's restricted dataset is rejected
  3. Security Hub centrally displays eligible standardized findings with source context preserved
  4. Logs identify blocked and counted requests by rule so false positives can be evaluated

Explanation

Correct Answer

C:

This measures the behavior required by the specific solution, rather than simply checking that it was configured. Security Hub consolidates security posture and findings from participating services. The acceptance condition is linked directly to the scenario: A corporate SOC needs one prioritized security findings view across enabled security services and Regions.

Incorrect Answers

A:

An incident view identifies the affected service and response latency rather than just total fleet CPU. However, this does not establish the required outcome: security Hub centrally displays eligible standardized findings with source context preserved.

B:

Team A reads only its permitted dataset and an attempt to fetch team B's restricted dataset is rejected. However, this does not establish the required outcome: security Hub centrally displays eligible standardized findings with source context preserved.

D:

Logs identify blocked and counted requests by rule so false positives can be evaluated. However, this does not establish the required outcome: security Hub centrally displays eligible standardized findings with source context preserved.

Question 260

An enterprise architecture team faces this design requirement: A business-critical order API has no measured user-facing latency objective and responders cannot tell if changes make availability worse. Which architecture decision best meets that precise requirement?

  1. Define service level indicators and targets in CloudWatch dashboards and alarms grounded in request success and p95 latency
  2. Gate a least-privilege Systems Manager Automation runbook with an aws:approve step and retain change approval and execution records
  3. Evaluate on-demand capacity or auto scaling where appropriate and check hot partition keys
  4. Pair an AWS Config detection rule with controlled Systems Manager Automation remediation and change safeguards

Explanation

Correct Answer

A:

Operational excellence requires observable application SLOs tied to business-critical behavior. The required architecture outcome is: A business-critical order API has no measured user-facing latency objective and responders cannot tell if changes make availability worse. Validate this choice by checking that Release decisions reference tracked error rate and latency burn rather than raw instance uptime alone.

Incorrect Answers

B:

Administrators run sensitive maintenance scripts with no enforced approval or trail. The specific problem here is that engineers measure host utilization but not the outcomes experienced by users.

C:

Capacity planning ignores demand spikes or hot keys that concentrate requests. The specific problem here is that engineers measure host utilization but not the outcomes experienced by users.

D:

Config findings are left as unactioned notifications while risky drift remains exposed. The specific problem here is that engineers measure host utilization but not the outcomes experienced by users.