50 IBM A1000-005 Practice Questions: Question Bank 2025

An architecture team is defining SOA principles for a new enterprise platform. They want to maximize reuse and reduce consumer breakage when services evolve. Which service characteristic best supports this goal?

A development team is creating a new service that will be consumed by multiple business units. Which artifact is the most appropriate place to document functional capabilities, input/output, and policy expectations in a technology-neutral way?

A consumer needs data from three independent services to render a dashboard. Calling them sequentially increases latency. Which integration approach best reduces round trips while keeping services independent?

An organization is establishing SOA governance to ensure services are discoverable and consistently designed. Which governance mechanism most directly supports service discovery and reuse?

A team designed a service that exposes a single operation called executeRequest with a generic payload containing many optional fields for different use cases. Consumers frequently misinterpret required data and validations. What is the best design improvement?

A retail company needs to ensure that when an order is placed, inventory is reserved and a shipping request is created. These steps span multiple services and must tolerate partial failures without holding long database locks. Which pattern best fits this requirement?

A service owner wants to introduce a new optional field in a response message. Several consumers are not able to upgrade immediately. Which approach best supports backward compatibility?

An enterprise wants consistent enforcement of authentication, authorization, rate limiting, and request logging across dozens of services, without duplicating code in each service. What is the most appropriate architectural solution?

A company uses asynchronous messaging to integrate services. They observe occasional duplicate events (same business action processed twice), causing double shipment. The messaging platform provides at-least-once delivery. What is the best mitigation at the service design level?

An organization has a large service portfolio with multiple versions deployed simultaneously. They need governance controls to ensure consumers do not unknowingly bind to deprecated services and that retirement is predictable. Which governance practice best addresses this?

An enterprise is modernizing its SOA and wants to ensure services are designed around business capabilities rather than existing application modules. Which design approach best supports this goal?

A project team is defining service contracts for multiple consumers. Which practice most directly improves interoperability and reduces consumer breakage over time?

An SOA program needs to ensure that service consumers can discover approved services and understand how to use them. Which governance artifact best supports this requirement?

A retailer integrates with several external shipping providers. The providers have different message formats and protocols, but the retailer wants a consistent internal interface. Which integration pattern best addresses this requirement?

A service operation triggers a long-running business process that may take hours and requires human approval. Consumers should not time out and must be able to check status later. Which design is most appropriate?

A team is troubleshooting intermittent failures in a composite application. Logs show that failures often occur when Service A calls Service B, which then calls Service C. A temporary slowdown in Service C causes cascading timeouts. Which architectural improvement best reduces this failure propagation?

An organization wants to enforce consistent service-level objectives (SLOs), security requirements, and lifecycle controls across many service teams without blocking delivery. Which governance approach best balances control and agility?

A consumer reports that a service call intermittently creates duplicate orders. Investigation shows the consumer retries requests after network timeouts, and the provider sometimes processes both the original request and the retry. What is the best solution?

A regulated enterprise must support auditing for all service invocations, including who invoked a service, what data scope was requested, and the policy decision that allowed it. Which solution is most appropriate?

A company introduces a canonical data model for enterprise messages. Shortly after, multiple teams start embedding application-specific fields into the canonical schema, causing frequent breaking changes and slowing integration. What governance and design action best addresses this issue?

A team is decomposing a monolithic application into services. They want to reduce coupling by ensuring that consumers do not break when a provider changes its internal data model. Which design approach best supports this goal?

A business partner will access an Order service over the internet. The organization requires strong authentication, message integrity, and confidentiality at the message level because messages may traverse intermediaries. Which mechanism best fits these requirements?

A Service Owner wants to ensure consumers can reliably discover the latest approved endpoint and contract for a shared service. Which SOA governance capability most directly addresses this need?

A customer-facing service experiences periodic spikes that cause timeouts in downstream inventory checks. The business wants to preserve customer requests and process them as capacity allows without losing orders. Which integration pattern is most appropriate?

A service team needs to introduce a new optional field in the response payload while maintaining compatibility with existing consumers. Which approach is the best practice?

A company has multiple services using different customer identifiers (CRM ID, billing account number, and loyalty ID). Integration projects frequently require complex mappings. What is the recommended SOA approach to reduce repeated transformations across the enterprise?

An organization wants to ensure that only services that meet policy requirements (logging, encryption, and SLA metadata) can be promoted to production. Which governance mechanism best supports consistent enforcement across teams?

A provider service is frequently updated by an agile team. Multiple consumer applications depend on it and cannot upgrade quickly. Which versioning strategy best minimizes consumer disruption while allowing provider evolution?

A composite business process orchestrates several services (payment, fraud check, inventory, shipping). During partial failures, the business requires that already-completed steps be compensated to restore a consistent outcome without using distributed two-phase commit. What is the most appropriate solution pattern?

A service is experiencing intermittent latency. Operations can see infrastructure metrics are normal, but cannot pinpoint whether delays occur in the service, its dependencies, or a specific consumer pathway. Which capability most directly improves end-to-end diagnosis in an SOA environment?

An SOA team is documenting services for discovery and reuse. Which artifact is MOST important to publish in a service registry to enable consumers to understand how to call a service?

A payment service is consumed by several applications. Consumers must not be impacted when the internal payment provider changes. Which SOA design principle BEST addresses this requirement?

A service operation validates an order, reserves inventory, and creates a shipment in a single call. The operation fails intermittently, and consumers complain they cannot tell which step failed. What is the BEST design improvement?

A consumer needs to call a legacy system that only supports a proprietary protocol and message format. The SOA platform requires standardized service interfaces. Which integration approach BEST enables this without changing consumers?

A service exposes customer profile data to multiple business units. Some fields are sensitive and must be masked for certain consumers. What is the BEST SOA governance mechanism to ensure consistent enforcement?

A team is designing a synchronous service used by mobile clients over unreliable networks. Which design choice MOST improves resilience while remaining synchronous?

Multiple services must publish business events (e.g., OrderCreated) to many consumers, and new consumers will be added frequently. Which integration pattern BEST fits this requirement?

A service interface must evolve to add a new optional field without breaking existing consumers. Which versioning approach is BEST practice in SOA?

A long-running business process spans inventory, billing, and shipping services. Steps can succeed independently, and failures require compensating actions instead of distributed transactions. Which approach is MOST appropriate?

An organization has many services with inconsistent logging, metrics, and SLA reporting. Auditors require end-to-end traceability for customer-impacting transactions across services. What is the BEST governance-driven solution?

A team is introducing SOA to integrate multiple existing applications. Some stakeholders want to start by selecting a specific integration product and then finding use cases for it. What is the recommended first step in SOA adoption?

A service consumer needs to know which operations are available and the required message formats for an internal service. Which artifact most directly provides this information?

A composite application calls three services in sequence. When the second service fails, the third service must not execute, and the caller should receive a single consolidated failure response. Which pattern best fits this requirement?

Two departments independently built services for "Customer" data. The services have different definitions for "active customer" and inconsistent validation rules, causing integration defects. What governance control most directly prevents this situation going forward?

A service team wants to reduce client impact when the underlying implementation changes. They propose that clients call a single endpoint that remains stable while internal services can be replaced or moved. Which architectural approach best supports this goal?

A synchronous order submission service often exceeds its SLA due to a slow downstream credit check. The business can tolerate delayed credit decisions as long as the order is accepted and tracked. Which design change is most appropriate?

An ESB flow must route incoming messages to different service providers based on a value in the message payload (e.g., "region"). Which integration pattern is being applied?

A service exposes a reusable operation that updates customer contact details. Multiple consumer applications require different validation rules. What is the best practice to avoid breaking reuse while supporting variability?

A long-running business process spans multiple services. After step 3 completes, step 4 fails due to a downstream system outage. Rolling back step 3 is not possible because it triggered an external shipment. What is the most appropriate approach to maintain consistency?

A regulated enterprise needs to demonstrate that only approved service versions are deployed and that changes were reviewed for security and compliance. Which governance mechanism best satisfies this audit requirement?