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      Question

      Which of the following best describes 'microservices

      architecture'?
      A An architecture where the entire application is built as a single, unified codebase (monolith) Correct Answer Incorrect Answer
      B An architecture exclusively designed for mobile applications Correct Answer Incorrect Answer
      C An architecture where all services share a single database and communicate via direct function calls Correct Answer Incorrect Answer
      D An architectural style that structures an application as a collection of small, independently deployable services Correct Answer Incorrect Answer
      E An architecture that uses a single programming language across all application components to maintain transparency Correct Answer Incorrect Answer

      Solution

      Microservices decompose applications into loosely coupled services (e.g., separate services for authentication, account management, payments, notifications), each with its own database, deployable independently, and communicating via APIs or message queues (Kafka, RabbitMQ). Benefits: independent scaling, technology flexibility, fault isolation, faster deployment. Many large banks (HDFC, SBI) are migrating from monolithic core banking systems to microservices for digital agility.

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