Spring Batch MCQ - Multiple Choice Questions and Answers

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Data processing is an integral part of many modern applications. When it comes to robust, high-volume data and batch processing tasks, Spring Batch stands out as a comprehensive framework in the Spring ecosystem. From simple data imports to complex transformations, Spring Batch is a one-stop solution. 

As you embark on your Spring Batch journey, it's essential to understand its foundational concepts. This MCQ guide serves as a checkpoint for beginners, helping assess their grasp of this powerful framework. Let's dive in!

1. Which module in the Spring framework provides batch processing capabilities?

a) Spring Data

b) Spring MVC

c) Spring Batch

d) Spring Boot

Answer:

c) Spring Batch

Explanation:

Spring Batch is the module designed for batch processing in the Spring framework.

2. What does a Job in Spring Batch represent?

a) A single task

b) A collection of related steps

c) An error handler

d) A database connection

Answer:

b) A collection of related steps

Explanation:

In Spring Batch, a Job represents a complete process and consists of multiple related steps.

3. Which of the following interfaces is responsible for reading input data in Spring Batch?

a) ItemReader

b) ItemProcessor

c) ItemWriter

d) JobLauncher

Answer:

a) ItemReader

Explanation:

ItemReader reads input data, one record at a time, for further processing.

4. Which component in Spring Batch processes data between reading and writing?

a) BatchReader

b) BatchProcessor

c) ItemProcessor

d) DataTransformer

Answer:

c) ItemProcessor

Explanation:

The ItemProcessor takes care of data processing between the read (by ItemReader) and write operations (by ItemWriter).

5. In Spring Batch, where is the metadata, like job execution details, stored?

a) In application properties

b) In main memory

c) In a JobRepository

d) In an XML configuration

Answer:

c) In a JobRepository

Explanation:

JobRepository stores metadata about configured jobs, their instances, and their execution details.

6. Which of the following is NOT a core interface in Spring Batch?

a) Job

b) Step

c) Tasklet

d) Batchlet

Answer:

d) Batchlet

Explanation:

Batchlet is not an interface in Spring Batch. Job, Step, and Tasklet are core interfaces.

7. In a Spring Batch process, if the ItemProcessor returns null, what happens to the current item?

a) It's written to the output.

b) It's passed again to the processor.

c) It's skipped from being written.

d) It triggers an error.

Answer:

c) It's skipped from being written.

Explanation:

If an ItemProcessor returns null, the item will not be passed to the ItemWriter, effectively skipping it.

8. Which component in Spring Batch provides callback methods for before and after job execution?

a) JobLauncher

b) JobExecutionListener

c) JobOperator

d) StepExecutionListener

Answer:

b) JobExecutionListener

Explanation:

JobExecutionListener provides callback methods like beforeJob and afterJob for events during job execution.

9. Which annotation in Spring Batch marks a method to run after a step is completed?

a) @AfterStep

b) @PostStep

c) @StepComplete

d) @EndStep

Answer:

a) @AfterStep

Explanation:

The @AfterStep annotation is used to mark a method that should be executed after a step is completed.

10. What is a Chunk in the Context of Spring Batch?

a) A type of error

b) A single record of data

c) A collection of items processed together

d) A method to save data

Answer:

c) A collection of items processed together

Explanation:

In Spring Batch, a Chunk refers to a set of items that are read, processed, and written together.

11. In which order do the three main interfaces (ItemReader, ItemProcessor, and ItemWriter) of Spring Batch operate?

a) Processor -> Reader -> Writer

b) Reader -> Writer -> Processor

c) Reader -> Processor -> Writer

d) Writer -> Reader -> Processor

Answer:

c) Reader -> Processor -> Writer

Explanation:

In a typical Spring Batch operation, data is first read using ItemReader, then processed with ItemProcessor, and finally written using ItemWriter.

12. Which of the following is not a type of JobExecution status in Spring Batch?

a) STARTED

b) PAUSED

c) COMPLETED

d) FAILED

Answer:

b) PAUSED

Explanation:

PAUSED is not a JobExecution status in Spring Batch. Some of the statuses include STARTED, COMPLETED, and FAILED.

13. What does a FlatFileItemReader in Spring Batch do?

a) Reads items from a flat file

b) Writes items to a flat file

c) Processes items in memory

d) Communicates with a database

Answer:

a) Reads items from a flat file

Explanation:

FlatFileItemReader is designed to read items from a flat file, such as a CSV or a delimited text file.

14. What does the @EnableBatchProcessing annotation do in Spring Batch?

a) Enables batch processing in a Spring application

b) Marks a method for batch processing

c) Schedules a batch job

d) Initializes database connections

Answer:

a) Enables batch processing in a Spring application

Explanation:

The @EnableBatchProcessing annotation enables the necessary configurations for batch processing in a Spring application.

15. Which of the following listeners gets triggered before and after a step execution in Spring Batch?

a) JobExecutionListener

b) StepExecutionListener

c) ChunkListener

d) ReaderListener

Answer:

b) StepExecutionListener

Explanation:

StepExecutionListener provides callbacks for events like beforeStep and afterStep, triggered during the execution of a step.

16. Which component in Spring Batch provides methods to manually start and stop jobs?

a) JobLauncher

b) JobRepository

c) JobOperator

d) StepOperator

Answer:

c) JobOperator

Explanation:

JobOperator provides finer-grained operations for managing jobs, including manually starting and stopping them.

17. What does the JdbcCursorItemReader use to read records in Spring Batch?

a) Flat files

b) In-memory data

c) Database cursors

d) Network streams

Answer:

c) Database cursors

Explanation:

JdbcCursorItemReader uses database cursors to read records efficiently, especially for large datasets.

18. In Spring Batch, how can you skip specific records during processing?

a) Using a custom SkipPolicy

b) By returning null in the ItemProcessor

c) Setting the skipLimit property

d) Both a) and c)

Answer:

d) Both a) and c)

Explanation:

By using a custom SkipPolicy and setting the skipLimit property, Spring Batch can be configured to skip specific records.

19. Which component in Spring Batch provides a way to handle exceptions during processing?

a) ErrorHandler

b) SkipHandler

c) RetryTemplate

d) ExceptionListener

Answer:

c) RetryTemplate

Explanation:

RetryTemplate provides a mechanism to handle exceptions by retrying the operation a specified number of times.

20. In Spring Batch, what's the use of a JobBuilderFactory?

a) To launch a job

b) To store metadata about jobs

c) To create instances of Job

d) To handle exceptions in a job

Answer:

c) To create instances of Job

Explanation:

JobBuilderFactory is a factory class used to create Job instances in Spring Batch.

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