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• Format: Multiple-choice, closed book

• Length: 60 questions

• Duration: 120 minutes (2 hours)

• Pass score: 70%

• Language: English



A MuleSoft Certified Developer – Integration and API Associate (Mule 3) should be able to successfully
work on basic Mule 3 projects with guidance and supervision. The MCD – Integration and API
Associate (Mule 3) exam validates that a developer has the required knowledge and skills to design,
build, test, debug, deploy, and manage basic APIs and integrations: moving from Anypoint Platform to
Anypoint Studio and back. Certified candidates should be able to:

• Use MuleSoft-hosted Anypoint Platform to take a basic API through all the steps of its lifecycle:
design, build, deploy, manage, and govern.

• Use Anypoint Studio to build, test, and debug basic integrations and API implementations.

• Connect to a range of resources — including databases, files, web services, SaaS applications,
and JMS queues.

• Perform basic data transformations using DataWeave.

• Control message flow and handle errors.

• Process batch records.



Explaining application network basics Resources

• Explain MuleSofts proposal for closing the IT delivery gap.

• Describe the role and characteristics of the “modern API.”

• Describe the purpose and roles of a Center for Enablement (C4E).

• Define and describe the benefits of API-led connectivity and
application networks.

• Define and correctly use the terms API, API implementation, API
interface, API consumer, and API invocation.

• Describe the basics of the HTTP protocol and the characteristics of
requests and responses.

• Describe the capabilities and high-level components of Anypoint
Platform for the API lifecycle.

• DEV: FUN3 Module 1

• DEV: FUN3 Module 2

Designing and consuming APIs

• Describe the lifecycle of the “modern API.”

• Use RAML to define API resources, nested resources, and methods.

• Identify when and how to define query parameters vs URI
parameters.

• Use RAML to define API parameters, requests, and responses.

• Use RAML to define reusable data types and format-independent
examples.

• Read a RAML spec and formulate RESTful requests with query
parameters and/or headers as appropriate.

• DEV: FUN3 Module 3

• DEV: DIY3 Practice 3-1 and 4-1

Accessing and modifying Mule messages

• Describe the Mule message data structure.

• Use transformers to set message payloads, message properties, and
flow variables.

• Write MEL expressions to access and modify message payloads,
message properties, and flow variables.

• Enrich Mule messages using the Message Enricher.

• DEV: FUN3 Module 6

• DEV: DIY3 Practice 6-1

Structuring Mule applications

• Parameterize an application using property placeholders.

• Define and reuse global configurations in an application.

• Break an application into multiple flows using private flows, subflows,
and the Flow Reference component.

• Specify what data (payload, message properties, flow variables) is
persisted between flows when a Flow Reference is used.

• Specify what data (payload, message properties, flow variables) is
persisted between flows when a Mule message crosses a transport
boundary.

• Specify what data (payload, message properties, flow variables)
exists in a flow before and after a call in the middle of a flow to an
external resource.

• DEV: FUN3 Module 7

• DEV: DIY3 Practice 7-1 and 7-2

Building API implementation interfaces

• Manually create a RESTful interface for a Mule application.

• Describe the features and benefits of APIkit.

• Use APIkit to create implementation flows from a RAML file.

• Describe how requests are routed through flows generated by APIkit.

• DEV: FUN3 Module 4

• DEV: DIY3 Practice 4-1

Routing messages

• Use the Choice router to route messages based on conditional logic.

• Use the Scatter-Gather router to multicast messages.

• Use Filters to filter Mule messages.

• Validate data using the Validation module.

• DEV: FUN3 Module 10

• DEV: DIY3 Practice 10-1 and 10-2

Handling errors

• Describe the default exception strategy in a Mule application.

• Define a custom global default exception strategy for an application
and identify in what situations it will be used.

• Define exception strategies for flows.

• Combine multiple catch exception strategies in a choice exception
strategy.

• DEV: FUN3 Module 9

• DEV: DIY3 Practice 9-1 and 9-2

Transforming data with DataWeave

• Write DataWeave scripts to convert JSON, XML, and Java data
structures to different data structures and data types.

• Use DataWeave operators.

• Define and use custom data types.

• Apply correct DataWeave syntax to coerce data types.

• Apply correct DataWeave syntax to format strings, numbers, and
dates.

• Call Mule flows from a DataWeave script.

• Call global MEL functions from a DataWeave script.

• DEV: FUN3 Module 11

• DEV: DIY3 Practice 11-1

Using Connectors

• Retrieve data from a Database using the Database connector.

• Retrieve data from a REST service using HTTP Request.

• Use a Web Service Consumer connector to consume SOAP web
services.

• Use the Transform Message component to pass arguments to a
SOAP web service.

• List, read, and write local files using the File connector.

• List, read, and write remote files using the FTP connector.

• Use the JMS connector to publish and listen for JMS messages.

• DEV: FUN3 Module 4

• DEV: FUN3 Module 8

• DEV: FUN3 Module 12

• DEV: DIY3 Practice 4-1, 8-1, 12-1, and 12-2

Processing records

• List and compare and contrast the methods for processing individual
records in a collection.

• Explain how Mule messages are processed by the Foreach scope .

• Use the Foreach scope to process records.

• Explain how Mule messages are processed in a Batch job.

• Use a Batch element with Batch Steps, Batch Filters, and a Batch
Commit to process records.

• Use the Poll component to trigger a flow.

• Describe the features, benefits, and process to use watermarking.

• Configure watermarks in the Poll scope.

• Persist data between flow executions using the Object Store.

• DEV: FUN3 Module 12

• DEV: FUN3 Module 13

• DEV: DIY3 Practice 13-1

Debugging and troubleshooting Mule applications

• Use breakpoints to inspect a Mule message during runtime.

• Install missing dependencies and drivers to a Mule project.

• Read and decipher Mule log error messages.

• DEV: FUN3 Module 6

• DEV: FUN3 all WTs

• DEV: DIY3 Practice 6-1

• DEV: DIY3 all exercises

Deploying and managing APIs and integrations

• Package Mule applications for deployment.

• Deploy applications to CloudHub.

• Use CloudHub properties to ensure deployment success.

• Create and deploy API proxies.

• Connect an API implementation to API Manager using
autodiscovery.

• Use policies, including client ID enforcement, to secure an API.

• Create SLA tiers and apply SLA based policies