Java Skills Audio Quiz Quiz

1. Java Bean Scopes

   Which of the following is a valid scope for a bean in the Spring framework?

   1. singleton
   2. multipletone
   3. singelton
   4. static
   5. unique

2. Microservices vs. Monolithic

   When is it generally preferable to use a microservices architecture over a monolithic architecture?

   1. When your application needs high scalability and independent deployments
   2. When you have only a single, simple process
   3. When there is no need for network communication
   4. When all features must share the same memory space
   5. When database access is not required

3. Microservice Development Considerations

   Which of the following is important to consider when developing a microservice-based application?

   1. Service discovery
   2. Client-facing only interfaces
   3. Ignoring error handling
   4. Single data storage for all services
   5. No need for monitoring

4. Managing Multiple Service Instances

   How can you handle multiple instances of the same service in a distributed Java application?

   1. Using load balancing
   2. Only calling the first instance found
   3. Directly accessing by IP address
   4. Hard coding all endpoints
   5. Manual round robbin

5. Parallel Service Calls in Java

   What approach can be used to make parallel service calls in Java?

   1. Using ExecutorService
   2. Writing nested for loops
   3. Calling services sequentialy
   4. Using synchronized keyword only
   5. Using SingleThreadPool

6. Java Parallel Streams Usage

   When should you consider using parallel streams in Java?

   1. When processing large collections that can be split into independent tasks
   2. When working with single items
   3. When you need to keep order guaranteed
   4. When you want exact exception handling order
   5. When you want everything to run on the main thread

7. Collections in Java

   Which of the following is a valid Java collections class?

   1. HashMap
   2. HashTablez
   3. TreeMep
   4. ArryList
   5. ArrayyQueue

8. Objects as Map Keys

   If you want to use a custom object as a key in a Java HashMap, which methods should you implement or override?

   1. equals() and hashCode()
   2. toString() only
   3. compareTo() and clone()
   4. hashKey() and equals()
   5. finalize() and hashValue()

9. Java Optional Benefits

   What is one primary benefit of using the Optional class in Java?

   1. To avoid NullPointerException
   2. To improve array sorting
   3. To reduce memory consumption always
   4. To automatically create new threads
   5. To speed up file I/O

10. Securing APIs

    Which of the following is a commonly used method to secure APIs in Java applications?

    1. Authentication and authorization
    2. Only using public endpoints
    3. Turning off logging
    4. Allowing all traffic by default
    5. Ignoring encryption