Java Microservices Fundamentals Quiz Quiz

Test your understanding of core concepts, architecture, and practices in Java microservices with accessible questions ideal for beginners.

1. Definition of Microservices

   Which of the following best describes microservices architecture?

   1. A single large module containing all application features
   2. A model where services always use the same programming language
   3. A collection of tightly coupled libraries compiled into a single file
   4. A set of small, independent services focusing on specific business functions
   5. A group of services sharing the same database and codebase

2. Monolithic vs Microservices

   In contrast to microservices, how are features typically organized in a monolithic architecture?

   1. Features are only organized by user interface components
   2. Each feature runs on a different physical server
   3. All features use different programming languages
   4. Features are bundled in a single, tightly coupled unit
   5. Each feature is deployed as a separate process

3. Microservices Communication

   Which communication protocols are commonly used between microservices?

   1. HTTP and messaging queues
   2. File Transfer Protocol exclusively
   3. TCP-only direct calls
   4. Document Object Modules
   5. Universal Serial Bus protocols

4. Benefits of Microservices

   What is one key advantage of using a microservices architecture in Java development?

   1. Developers are restricted to a single database
   2. All code changes must be deployed together
   3. Services cannot be scaled separately
   4. Individual services can be built, tested, and deployed independently
   5. It reduces the need for business logic

5. Scaling in Microservices

   How does microservices architecture facilitate scaling applications?

   1. Scaling is managed manually for each class
   2. Scaling is only possible vertically by adding more CPU
   3. Services are only resized when code is changed
   4. Each microservice can be scaled independently based on demand
   5. The entire application must be scaled at once

6. Modularity in Microservices

   If a payment service in an application is implemented as a microservice, what is a benefit of this modularity?

   1. The entire application requires redeployment for small changes
   2. The payment service is merged into a main codebase
   3. The payment logic can be updated without affecting unrelated services
   4. All microservices must share the same data source
   5. Database changes are needed for any update

7. Service Independence

   Suppose a team wants to use a different programming language for one microservice. What feature of microservices makes this possible?

   1. Monotonic design strategy
   2. Independent development of services
   3. Cross-linked business logics
   4. Tightly coupled deployment
   5. Single codebase requirement

8. Deployment Patterns

   Which statement is true about deploying microservices in contrast with monolithic applications?

   1. All microservices must be deployed at the same time
   2. Microservices cannot be deployed on different servers
   3. Deployment requires stopping all user activity
   4. Each microservice can be deployed without redeploying the entire application
   5. Only the user interface is redeployed

9. Maintaining Microservices

   Why does a microservices architecture typically ease application maintenance?

   1. All code changes must occur in all services
   2. Services cannot be replaced individually
   3. Monolithic style is used for every update
   4. Only full-system updates are allowed
   5. Changes in one service do not impact others directly

10. Communication Example

    If one microservice needs to notify another about order updates, which approach is commonly used?

    1. Embedding the logic in a single large file
    2. Adding code to both services' controllers
    3. Ignoring communication due to autonomy
    4. Directly manipulating the other service's database
    5. Sending a message through a message queue