History and Evolution of Application Development DSE Practice Questions (Page 5)

Questions 21–25

1. 21application · medium

   A company is deploying a web application that experiences unpredictable traffic spikes. The application is currently running on a fixed number of virtual machines. The team wants to adopt a cloud-native approach to handle the variable load efficiently. Which solution is most appropriate?

   • AProvision a larger fixed set of virtual machines to handle the peak load.
   • BKeep the current setup but manually add more VMs during peak times.
   • CDeploy the application as a set of microservices on a container orchestration platform with autoscaling enabled.
   • DUse a single powerful server to handle all traffic spikes.
   Reveal Solution Discussion Select an answer first
2. 22foundation · easy

   In the early history of application development, what was the primary reason for the transition from machine code to assembly language?

   • ATo enable programs to run without direct interaction with the CPU
   • BTo eliminate the need for an assembler or any translation step
   • CTo improve programmer productivity by using mnemonic symbols instead of binary instructions
   • DTo make programs more portable across different hardware platforms
   Reveal Solution Discussion Select an answer first
4. 23expert · hard

   A company has a legacy client-server application that is mission-critical. The current application uses a proprietary protocol and a thick client. They want to modernize it to a web-based architecture, but they have a limited budget and cannot afford downtime. Which approach best minimizes risk while achieving modernization?

   • AGradually replace the thick client with a web interface that communicates with the existing server via an API gateway, using a strangler pattern.
   • BPerform a big-bang rewrite of the entire system to a new web-based architecture.
   • CKeep the thick client but wrap it in a web-based remote desktop solution.
   • DReplace the proprietary protocol with a standard protocol but keep the thick client.
   Reveal Solution Discussion Select an answer first
5. 24application · medium

   A company has a legacy client-server application where the client is a thick desktop application. They want to modernize it to be accessible from any device with a browser. The team wants to minimize changes to the server-side business logic. Which approach best reflects the evolution from client-server to web-based models?

   • ARewrite the server-side logic in a different programming language to be more modern.
   • BDevelop a web application that uses the existing server-side logic via REST APIs, with a responsive front-end.
   • CKeep the thick client but use a remote desktop solution to access it from browsers.
   • DReplace the server with a mainframe to handle more concurrent users.
   Reveal Solution Discussion Select an answer first
6. 25application · medium

   An organization is designing a new application that will be accessed by thousands of remote users over the internet. The application will store data in a centralized database. Which architecture best reflects the evolution from early client-server to modern web-based systems?

   • AA peer-to-peer architecture where each client holds a copy of the database.
   • BA three-tier architecture with a web server, application server, and database server.
   • CA mainframe-based architecture with dumb terminals.
   • DA single-tier architecture where the application and database run on the same machine.
   Reveal Solution Discussion Select an answer first