Interview questions for Mule software

1) What is Mule Soft?

Mule Soft is an integration platform for connecting enterprise and SaaS applications in the cloud and on-premise.

2) List types of variables in Mule Soft?

Types of variables in MuleSoft are:
• Flow Variable: It is used to either set or removes variables tied to a particular message in the current flow.
• Record Variable: It is used for batch processing flows.
• Session Variable: This variable is used to either set or remove variables tied to a particular message for the complete lifecycle.

3. Name the types of Exception Handling in MuleSoft?

There are five types of Exception Handling in MuleSoft.
• Global Exception Handling.
• Catch Exception Handling.
• Choice Exception Handling.
• Default Exception Handling.
• Rollback Exception Handling.

4. What are the various types of messages in Mule Soft?

Various types of messages in Mule Soft are: 1) echo and log message, 2) bridge message, and 3) build message.

5. What is the advantage of using Mule ESB?

Mule ESB is a lightweight and highly scalable integration framework which enables the developers to start and connect various applications. The Mule manages the exchange between the components, applications transparency and ESB is taken care of by various applications. Mule can easily integrate third-party applications.

6. What is the functionality of Fan-in and Fan-out?

Fan-out: The Fan-Out primitive is used to fire the output terminal once or multiple times. Fan-Out can be used in isolation or as a combination of Fan-Out and Fan-In.
Fan-in: The Fan-In acts as a decision point to continue the flow execution. Until a decision point is reached it receives a number of messages, at which point the last message to be received is propagated to the output terminal. The Fan In primitive can be used in combination with Fan-Out.

7. Name the features in Mule ESB?

An ESB follows a service-oriented approach and is used in the purpose of integration. The features include.
• Message Routing Service.
• Message Transformation Service.
• Set of Service Container.
• Web Service Security.

8. What are all the configurations required for JDBC Adapter implementation?

The configuration of JDBC adapter is not a complex task, it just needs a data source to connect and configure with a database. A security authentication program must be created if the DB has secure access.

9. What is the Difference between SDO and SMO?

SDO: It is a Service Data Object which represents a variable or an object.
SMO: It is a model pattern that is used for SDO Data Objects to represent messages.

10. What is the MuleSoft integration platform?

Mulesoft integration platform helps a developer to connect to their application with ESB. It is a lightweight integration framework. ESB is highly scalable that means it helps in connecting the small application with multiple applications but ESB Will did not fit for all the projects to implement.

11. What is the Difference between Stop and fail?

It is used to stop the particular path inflow without generating any exception.
Fail: Generates a failure in the flow.

12. What is the use of Outbound Endpoint in Mule Soft?

The Outbound Endpoint performs the following things:
• Sending the SOAP messages.
• Writing to file streams.
• Sending email messages.

13. How many types of MuleSoft are there?

We will find 2 types Mule ESB and Cloud Hub, for connecting enterprise and SAAS applications in the on-premises and cloud. Mulesoft allows developers to connect applications together quickly and easily, and it helps in exchanging the data

14.  Mention flow processing strategies in MuleSoft?

MuleSoft has six types of strategy for flow processing:
• A queued asynchronous flow processing
• Custom flow processing
• Tread per processing
• Queued flow processing
• Non-blocking flow processing
• Synchronous flow processing
• Asynchronous flow processing

15. Explain the concept of Correlation Context?

It is a primitive that is used to pass values from request flow to response flow.

16. Why was Mule Designed?

Mule’s core was designed as an event-driven framework combined with a unified representation of messages, expandable with pluggable modules. These modules would provide support for a wide range of transports or add extra features, such as distributed transactions, security, or management. Mule was also designed as a programmatic framework offering programmers the means to graft additional behavior such as specific message processing or custom data transformation.

17. Is MuleSoft a good career option in future?

There is a good prospect for MuleSoft technology in future and similarly IT professional are looking for having a career in same. Having in mind and with our experience/expertise we tried to collate different MuleSoft interview questionswhich are generally asked.

18. What Are Available Esbs Apart From Mule?

There are different ESBs available in the market which is both licensed and open source. They are:
• JBoss Fuse.
• ESBMule.
• ESBTalend.

19. What the various categories of Mule Processors?

There are six categories in Mule Processors.
1. Components.
2. Exception strategies.
3. Business events.
4. Routers.
5. Connectors.
6. Transformers.

20. Explain Mule ESB?

Mule ESB is an architecture developed for programmers. They can integrate a range of applications together using the bus-like infrastructure. Mule ESB can be integrated with HTTP, web service, JMS, etc.

21. What is fan-in?

Fan-in helps in taking a decision to continue flow execution. It be used in combination with fan out.

22. Explain Mule ESB?

Mule ESB is an architecture developed for programmers. They can integrate a range of applications together using the bus-like infrastructure. Mule ESB can be integrated with HTTP, web service, JMS, etc.

23. What is fan-in?

Fan-in helps in taking a decision to continue flow execution. It be used in combination with fan out.

24. What is a fan-out?

Fan out is primitive that can be used to input messages through the output terminal once or more than one time. It can also be used as a combination of both fan-out and fan-in

25. What is a fan-out?

Fan out is primitive that can be used to input messages through the output terminal once or more than one time. It can also be used as a combination of both fan-out and fan-in.

26. Name the types of Exception Handling in MuleSoft?

There are five types of Exception Handling in MuleSoft.
• Global Exception Handling.
• Catch Exception Handling.
• Choice Exception Handling.
• Default Exception Handling.
• Rollback Exception Handling.

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