Explain Architectural Patterns (monolithic, Services Oriented, Microservices, and Event Driven) 350-901 Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A large enterprise has many legacy systems built by different teams over the years. They want to expose business functionality (e.g., customer lookup, order processing) as reusable services that can be orchestrated into new composite applications. The company has a central integration team that can manage middleware. They value standardized contracts and centralized governance. Which architectural pattern best fits these requirements?

   • AMicroservices architecture with each service having its own database
   • BMonolithic architecture with a shared database
   • CEvent-driven architecture with a message broker
   • DService-oriented architecture (SOA) with an enterprise service bus (ESB)
   Reveal Solution Discussion Select an answer first
2. 2foundation · easy

   What is a key characteristic of a monolithic application?

   • AServices communicate through a central enterprise service bus.
   • BThe entire application is deployed as a single artifact.
   • CEach component can be scaled independently based on demand.
   • DData is managed independently by each service.
   Reveal Solution Discussion Select an answer first
4. 3expert · hard

   A company is modernizing a legacy monolithic application. The business wants to release new features faster and scale specific components independently. However, the company has a small operations team and limited budget for infrastructure. They are considering a full microservices migration. Which approach best balances the need for faster releases and independent scaling with the operational constraints?

   • AMove to a service-oriented architecture with an ESB
   • BKeep the monolith and add an API gateway to expose its functions as services
   • CMigrate the entire application to microservices in one large project
   • DAdopt a modular monolith first, then gradually extract modules into microservices as needed
   Reveal Solution Discussion Select an answer first
5. 4application · medium

   A logistics company has a fleet of delivery vehicles that send location updates every few seconds. The company wants to process these updates to update a live tracking dashboard and also to trigger alerts if a vehicle deviates from its route. The volume of updates is high and varies throughout the day. The company does not want the tracking dashboard to be affected by the alerting logic. Which architectural pattern is most suitable?

   • AService-oriented architecture with an ESB
   • BMonolithic architecture with a synchronous REST API
   • CEvent-driven architecture with a message broker
   • DMicroservices architecture with synchronous REST calls between services
   Reveal Solution Discussion Select an answer first
6. 5foundation · easy

   In Service-Oriented Architecture (SOA), what is the purpose of a service contract?

   • AIt is a database schema that the service uses to store its data.
   • BIt is a legal document that outlines the service level agreement (SLA).
   • CIt defines the terms of the licensing agreement for the service.
   • DIt specifies the interface, behavior, and data exchange format of the service.
   Reveal Solution Discussion Select an answer first