Salesforce-MuleSoft-Developer Practice Test Questions

Explanation:

The For Each scope iterates over a collection in the same event thread, processing one element at a time by default. There’s no built-in thread pool or parallelism — it simply blocks until each element is handled before moving to the next.

In contrast, a Batch Job harnesses Mule’s asynchronous engine. It divides incoming records into batches and farm-outs those batches across multiple worker threads (16 by default in Mule 4). Each batch block processes in parallel, dramatically speeding up large-scale data operations.

Incorrect options:

• B. Batch Job isn’t single-threaded.
• C. For Each isn’t multi-threaded by default.
• D. This inverts the actual behavior.

Explanation:

When you run a Mule application in debug mode using Anypoint Studio, the Mule runtime launches a remote debugging process that listens on a specific port for incoming debugger connections. By default, this port is 7777, which is pre-configured in the debugger settings of Anypoint Studio. This port allows Studio’s debugger to attach to the running Mule application and interactively inspect variables, payloads, and execution flow.

This default value (7777) is used unless manually changed in the Studio debugger configuration or overridden via command-line settings. It ensures that developers can set breakpoints and step through flows during development and troubleshooting without additional setup. If multiple Mule apps are debugged at the same time, you may need to modify the port to avoid conflicts.

Knowing this default port is useful when configuring firewalls, managing IDE settings, or setting up remote debugging on different environments. It ensures a smooth and responsive debugging experience during MuleSoft development workflows.

Incorrect Options:

A. 8082 – Common for other services, not Mule debugger.
B. 8080 – Default for HTTP, not debugging.
D. 6666 – Not used by default in Anypoint Studio debugging.

Explanation:

The Logger uses #[ typeOf(payload) ], which returns the Mule payload’s data type:

Given that the Select (Database) connector outputs a list of maps (each row as a map, all rows as an array), the payload entering the Logger is an Array of Objects. In DataWeave terms, that’s an Array.

So the logger prints: Array.

Explanation:

Following RESTful and RAML best practices, each purchase order is modeled as a resource under the /orders base URI, with its unique ID as a path parameter. In your RAML spec you’d declare something like /orders/{orderId}, so a client requests a specific record by substituting its ID directly in the path.

Incorrect options:

A. /orders/{P05555} is the RAML template, not the actual call.
B. /orders/order=P05555 misuses path syntax with an equals sign.
C. /orders?order=P05555 treats the ID as a query parameter instead of a path segment.

Explanation:

On CloudHub, each worker is a dedicated runtime instance managed by MuleSoft’s cloud infrastructure. By design, each worker can run only one Mule application at a time. This ensures resource isolation, security, and performance consistency. This architecture allows scaling by adding more workers per application, but not by running multiple apps on one worker.

If you deploy two Mule applications, each will be assigned its own worker, depending on your configuration. This design simplifies application lifecycle management, logging, monitoring, and fault isolation. Unlike on-prem Mule runtimes (where multiple apps can share a runtime), CloudHub enforces the one-app-per-worker model.

This approach is deliberate to prevent conflicts in resource usage and to maintain high availability and scalability for each application. If you need to run multiple apps, you’ll need multiple workers or deploy them separately. The worker size (0.1 vCores, 1 vCore, etc.) only affects capacity — it doesn’t allow you to host more than one app per worker.

Incorrect Options:

B. At least one – Misleading; only one app can run per worker, not multiple.
C. Depends – No dependency here; the rule is fixed on CloudHub.
D. None of these – Incorrect; option A is valid.

Explanation:

In MuleSoft, when you create a variable using the Set Variable component, the value is stored in the vars object. In this example, the variable named customer is an object with two key-value pairs: {first: "Max", last: "Mule"}. To access nested properties in a variable, you use dot notation. So to get the first name "Max", the correct expression is vars.customer.first.

This value can be used directly in a Logger or any other component that supports expressions. For the Logger's message attribute, setting it to #[vars.customer.first] will evaluate to "Max" at runtime, which is exactly the desired output based on the structure of the customer variable.

Using incorrect syntax like "customer first" or separating keys with spaces instead of dots will result in runtime errors or null values. Following the proper DataWeave expression syntax ensures that values stored in variables can be accurately accessed and used in other parts of the Mule application.

Incorrect Options:

B. "customer first" – Invalid string format; not a DataWeave expression.
C. customer first – Missing vars. and not wrapped in #[ ].
D. vars "customer" "first" – Not valid syntax; incorrect string/property access.

Explanation:

Anypoint Exchange is the MuleSoft product designed for publishing, sharing, and discovering APIs, connectors, templates, and other assets across teams. It acts as a centralized catalog where developers can search, reuse, and collaborate on API resources (Option D).

Why Other Options Are Wrong

A (Runtime Manager): Manages deployment and monitoring, not API sharing.
B (API Notebook): A deprecated tool for testing APIs interactively.
C (API Designer): Used for designing APIs (RAML/OAS), not publishing/sharing.

Explanation:
Correct answer is ${training.host}
How to Configure Properties to Mule 4.X Platform?
1) Go to /src/main/resources project directory.
2) Create a configuration file with the name configuration.yaml inside the newly created config folder.
3) Go To Project > Global Element > Create > General >select the configuration.yaml file create in step- 2)
4) To verify develop a simple flow with HTTP listener which has above entries. Put the logger that prints the values on console.
5) Additional info: Similarly, when you want to access this port in DataWeave you need to use p function

Explanation:
Correct answer is MAJOR
MAJOR version when you make incompatible API changes, MINOR version when you add functionality in a backwards compatible manner, and PATCH version when you make backwards compatible bug fixes.

Explanation:
URI parameter (Path Param) is basically used to identify a specific resource or resources . For eg : the URL to get employee details on the basis of employeeID will be GET /employees/{employeeID} where employees is resource and {employeeID} is URI parameter. Hence option 1is the correct answer