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MuleSoft Certified Developer - Level 1

 Certification Guide

The MuleSoft Certified Developer - Level 1 candidates should possess the ability to effectively collaborate on fundamental Mule 4 projects with guidance and supervision. The MuleSoft Certified Developer – Level 1 examination validates that a developer possesses the necessary knowledge and competencies to create, assess, troubleshoot, deploy, and oversee basic APIs and integrations, transitioning between Anypoint Platform and Anypoint Studio.

Key Facts

The exam is made up of 60 multiple choice questions

120 minutes to complete

The passing score is 70%

The exam allows up to 5 attempts, with a 24-hour interval between each.

The cost is USD $400, which includes one free retake. Additional retakes (attempts 3 to 5) are available at half-price but do not include a free retake.

This information will assist you if you’re interested in becoming MuleSoft Certified Developer - Level 1 and includes an overview of the core topics in the exam.

There are 12 areas of knowledge that are covered by the MuleSoft Certified Developer - Level 1 certification.

They are covered by the Anypoint Platform Development: Fundamentals training, but if you are not able to attend, then you will need to ensure you know the areas listed below well.

MuleSoft Certified Developer - Level 1

Certification Contents

The following are the core topic areas covered by the MuleSoft Certified Developer - Level 1 certification, and the exam confirms your ability to perform these tasks.

Explaining application network basics
  • Explain MuleSoft’s 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.
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.
  • Define and describe the benefits of API-led connectivity and application networks.
  • Use RAML to define API parameters, requests, and responses.
  • Use RAML to define API parameters, requests, and responses.
  • Read a RAML spec and formulate RESTful requests with query parameters and/or headers as appropriate.
Accessing and modifying Mule events
  • Describe the Mule event data structure.
  • Use transformers to set event payloads, attributes, and variables.
  • Write DataWeave expressions to access and modify event payloads, attributes, and variables.
  • Enrich Mule events using target parameters.
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, attributes, variables) is persisted between flows when a Flow Reference is used.
  • Specify what data (payload, attributes, variables) is persisted between flows when a Mule event crosses a connection boundary.
  • Specify what data (payload, attributes, variables) exists in a flow before and after a call in the middle of a flow to an external resource.
Building API implementation interfaces
  • Manually create a RESTful interface for a Mule application.
  • Generate a REST Connector from a RAML specification.
  • 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.
Routing events
  • Use the Choice router to route events based on conditional logic.
  • Use the Scatter-Gather router to multicast events.
  • Validate data using the Validation module.
Handling errors
  • Describe the default error handling in a Mule application.
  • Define a custom global default error handler for an application and identify in what situations it will be used.
  • Compare and contrast how the On Error Continue and On Error Propagate scopes work.
  • Create one or more error handlers for a flow.
  • Use the Try scope to specify error handlers for one or more event processors.
  • Describe the data structure of the Mule Error object.
  • Map errors to custom application errors.
Transforming data with DataWeave
  • Write DataWeave scripts to convert JSON, XML, and Java data structures to different data structures and data types.
  • Use DataWeave functions.
  • Define and use DataWeave variables, functions, and modules.
  • 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.
Using Connectors
  • Retrieve data from a Database using the Database connector.
  • Create parameterized SQL queries for the Database connector.
  • Retrieve data from a REST service using HTTP Request or a REST Connector.
  • 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.
Processing records
  • List and compare and contrast the methods for processing individual records in a collection.
  • Explain how Mule events are processed by the For Each scope.
  • Use the For Each scope to process records.
  • Explain how Mule events are processed by the Batch Job scope.
  • Use a Batch Job with Batch Steps and a Batch Aggregator to process records.
  • Use connector listeners to trigger flows.
  • Describe the features, benefits, and process to use watermarking.
  • Use connectors with automatic watermarking capabilities.
  • Use Persist data between flow executions using the Object Store. with automatic watermarking capabilities.
Debugging and troubleshooting Mule applications
  • Use breakpoints to inspect a Mule event during runtime.
  • Install missing Maven dependencies.
  • Read and decipher Mule log error messages.
Reply to a Forum topic
  • 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.

To prepare successfully for the certification exam, we recommend to work through our

MuleSoft Certified Developer - Level 1 Practice Exams

MuleSoft Certified Developer - Level 1
Practice Exams

Test yourself with complete practice exams or focus on a particular topic with the topic exams. Find out if you are ready for the exam.


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