Application Architectures and Development Lifecycle DSE Practice Questions (Page 11)

Questions 51–55

1. 51application · medium

   An e-commerce platform uses a microservices architecture. When a customer places an order, the order service must notify the inventory service and the shipping service. The team wants to avoid blocking the order service while these notifications are sent, and also wants to allow new services to subscribe to order events without modifying the order service. Which approach should the team use?

   • AUse a shared database where the order service writes order data and other services poll for changes.
   • BUse a message broker to publish order events; inventory and shipping services subscribe to the events.
   • CHave the order service send events to a log file that other services read periodically.
   • DHave the order service call the inventory and shipping services synchronously via REST.
   Reveal Solution Discussion Select an answer first
2. 52foundation · easy

   Which of the following is a core principle of Agile development?

   • ADeliver working software in short, iterative cycles and respond to changing requirements.
   • BFollow a strict, sequential plan with no changes allowed after requirements are set.
   • CDefer all testing until the end of the project.
   • DMinimize communication between team members to reduce overhead.
   Reveal Solution Discussion Select an answer first
4. 53application · medium

   A development team wants to ensure that every code change is automatically built, tested, and packaged before it is reviewed by other developers. Which CI/CD pipeline stage should be added first?

   • AA continuous integration stage that runs unit tests and creates a build artifact
   • BA manual approval step before any code is committed
   • CA deployment stage that pushes every commit to production
   • DA performance testing stage that runs load tests on every commit
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5. 54foundation · easy

   What is the main purpose of acceptance testing?

   • ATo test individual functions in isolation.
   • BTo check that different modules work together correctly.
   • CTo test the system's performance under load.
   • DTo verify that the software meets the business requirements and is ready for release.
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6. 55foundation · easy

   Which of the following is an example of a secure coding practice?

   • AUsing dynamic SQL queries built directly from user input.
   • BHardcoding passwords in source code for simplicity.
   • CDisabling all security features to improve performance.
   • DValidating and sanitizing all user inputs to prevent injection attacks.
   Reveal Solution Discussion Select an answer first