Salesforce Certified MuleSoft Developer (Mule-Dev-201) Exam Questions Instant Access

Question 1

Refer to the exhibit. The main flow contains an HTTP Request in the middle of the flow. The HTTP Listeners and HTTP request use default configurations.

What values are accessible to the Logger at the end of the flow after a web client submit request to http://local:801/order?color=red?

Apayload

Bpayload quantity var

Cpayload color query param

Dpayload quantity var color query param

Answer : B

In this case as outbound call is made using HTTP: POST /child , all attributes will be replaced by this invocation. Hence query parameter will not be accessible at logger.

Question 2

What is the output type of the DataWeave map operator?

AString

BArray

CMap

DObject

Answer : B

Question 3

Refer to the exhibits.

A web client sends sale data in a POST request to the Mule application. The Transform Message component then enrich the payload by prepending a vendor name to the sale data.

What is written to the sales.csv file when the flow executes?

AThe enriched payload in JSON format

BThe enriched payload in XML format

CThe enriched payload in CSV format

DAn error message

Answer : A

Question 4

What HTTP method in a RESTful web service is typically used to completely replace an existing resource?

AGET

BPATCH

CPUT

DPOST

Answer : C

PUT replaces the original version of the resource, whereas the PATCH method supplies a set of instructions to modify the resource

Question 5

Refer to the exhibits.

The Validation component in the private flow throws an error. What response message is returned to a client request to the main flow's HTTP Listener?

AError - private flow

BError - main flow

CSuccess - main flow

DValidation Error

Answer : B

Error in validation component will get processed by Processer level On Error Propagate block and then error will be rethrown which will get processed by flow level error handler which will set payload to 'Error- main flow'. Hence correct answer is Error - main flow

1) Request is received by HTTP listener

2) Try scope gets executed

3) The validator component in the Try scope creates an Error Object because the payload is not null.

4) The On Error Propagate handles the error. The payload is set to ''Error -- Try scope''

6) ''Error -- Try scope'' is returned to the 'On Error Continue' block. Main flow execution stops. Payload is set to 'Error - main flow'

7) ''Error - main flow'' is returned to the requestor in the body of the HTTP request. HTTP Status Code: 200

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Reference Diagram though not exactly same, conditions are similar. They will help you answer any new question on error handling in real exam:

https://docs.mulesoft.com/mule-runtime/4.3/on-error-scope-concept#on-error-continue

Question 6

A flow contains an HTTP Listener as the event source. What is the DataWeave expression to log the Content-Type header using a Logger component?

A#['Content-Type: ' ++ attributes.headers.'content-type']

B#['Content-Type: ' + headers.'content-type']

C#['Content-Type: ' + attributes.headers.'content-type']

D#['Content-Type: ' ++ headers.'content-type']

Answer : A

Option 1 is the only correct choice due to two reasons. 1) Concatenation is always with ++ sign and not with + sign which makes option 2 and 3 wrong 2) hearders can be accessed with attributes. headers and not with only headers which makes option 4 incorrect

Question 7

Refer to the exhibits.

A web client sends a POST request with the payload {"oid": "1000", "itemid": "AC200", "qty": "4" } to the Mule application. The File Write operation throws a FILE:CONNECTIVITY error.

What response message is returned to the web client?

A''FILE:CONNECnvnY'

B'ORDER:NOT_CREATED'

C'OTHER ERROR'

D'File written'

Answer : B