History and Evolution of Application Development DSE Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A company has a legacy client-server application where the client contains most of the business logic. They want to move to a web-based architecture to support mobile users. The team is considering whether to use a single-page application (SPA) or a server-rendered web application. Which factor is most critical in this decision?

   • AServer-rendered applications cannot support mobile users, so an SPA is required.
   • BThe choice depends on the need for offline capability, SEO, and the complexity of client-side state management.
   • CThe client-server model is obsolete, so any web architecture is acceptable.
   • DSPAs are always faster and should be chosen for all new web applications.
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2. 2application · medium

   A developer is learning about the history of programming languages and wants to understand why high-level languages were created. They are working on a project that requires complex business logic and frequent updates. Which statement best explains the benefit of high-level languages in this context?

   • AHigh-level languages eliminate the need for compilers or interpreters.
   • BHigh-level languages provide direct control over CPU registers, improving performance.
   • CHigh-level languages are only used for web development, not other applications.
   • DHigh-level languages abstract hardware details, making code easier to write, read, and maintain.
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4. 3application · medium

   A company is redesigning its on-premises client-server application for the cloud. The current application uses a thick client that connects directly to a database server. The new architecture must support remote users over the internet and scale independently. Which design best reflects the evolution from client-server to modern web-based architectures?

   • ADeploy the thick client to each user's device and connect it to a cloud-hosted database.
   • BExpose the database directly to the internet so remote users can query it.
   • CUse a VPN to allow remote users to access the existing client-server application unchanged.
   • DCreate a web application with a REST API backend and a separate database service.
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5. 4application · medium

   A company maintains a legacy monolithic application that was originally built as a client-server system. The team now wants to modernize it to support independent scaling of the user-facing and billing components. The budget is limited, and the team wants to avoid a complete rewrite. Which approach best aligns with the evolution from client-server to modern development practices?

   • AMove the application to a mainframe environment to improve reliability.
   • BKeep the monolith but add a load balancer to distribute traffic to multiple instances of the same application.
   • CRefactor the monolith into two separate services that communicate via REST APIs, then deploy them independently.
   • DRewrite the entire application from scratch using a functional programming language.
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6. 5expert · hard

   A company is redesigning its client-server application to be cloud-native. The application must support global users with low latency. The team is considering a microservices architecture with a content delivery network (CDN). Which design decision is most critical to achieving low latency?

   • AUse a CDN for static content and deploy microservices in multiple regions with a global load balancer.
   • BDeploy microservices only in the region with the most users to save cost.
   • CPlace all microservices in a single region to simplify management.
   • DUse a single large VM to host all microservices and rely on the CDN for everything.
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