Application Architectures and Development Lifecycle DSE Practice Questions (Page 7)

Questions 31–35

1. 31application · medium

   A company is designing a web application where users access data through a browser. The application must separate the user interface, business logic, and data storage to allow independent updates. The security team also requires that the data storage layer not be directly accessible from the client. Which architecture best meets these requirements?

   • AThree-tier architecture with presentation, application, and data tiers.
   • BSingle-tier architecture where all components run on the client device.
   • CTwo-tier client-server architecture where the client directly accesses the database.
   • DPeer-to-peer architecture where each client also acts as a server.
   Reveal Solution Discussion Select an answer first
2. 32expert · medium

   A company is designing a new web application with a separate presentation layer, business logic layer, and data access layer. They want to ensure that security controls are consistently enforced across all layers. Which architectural approach best supports this requirement?

   • AA single-tier architecture with all components on one server
   • BA monolithic architecture where all code is in a single executable
   • CA peer-to-peer architecture where all nodes are equal
   • DA three-tier client-server architecture where each tier is deployed on separate servers
   Reveal Solution Discussion Select an answer first
4. 33expert · hard

   A startup has a monolithic application that is becoming difficult to scale because different modules have different resource demands. The team wants to scale only the payment module independently and deploy updates to it without redeploying the entire application. Which approach best addresses these needs while minimizing initial complexity?

   • AUse a service-oriented architecture with an enterprise service bus for all modules
   • BExtract the payment module into a separate microservice and deploy it independently
   • CRewrite the entire application as a set of microservices from scratch
   • DKeep the monolith and scale the entire application by adding more instances
   Reveal Solution Discussion Select an answer first
5. 34expert · medium

   A company is building a system that must react to user actions in real time, such as updating dashboards and sending notifications. The system also needs to handle spikes in event volume without losing events. Which architectural approach is most suitable?

   • ABatch processing that runs nightly
   • BSynchronous request-response with direct REST calls
   • CEvent-driven architecture with a durable message broker
   • DA monolithic application with a shared database
   Reveal Solution Discussion Select an answer first
6. 35expert · medium

   A team is transitioning from a waterfall model to agile. They want to maintain high quality while delivering features every two weeks. The team is struggling with integration issues at the end of each sprint. Which practice should they adopt to reduce integration problems?

   • AIntegrate code continuously throughout the sprint using a CI pipeline
   • BHave each developer work on a separate branch and merge only at release
   • CUse a single branch with no version control
   • DDelay integration until the end of the sprint to avoid disrupting developers
   Reveal Solution Discussion Select an answer first