Mulesoft MCD-LEVEL1 Online Practice Questions and Exam Preparation

Mulesoft MCD-LEVEL1 Online Questions & Answers

• Question 31:

  An SLA based policy has been enabled in API Manager. What is the next step to configure the API proxy to enforce the new SLA policy?

  A. Add new property placeholders and redeploy the API proxy
  B. Add new environment variables and restart the API proxy
  C. Restart the API proxy to clear the API policy cache
  D. Add required headers to the RAML specification and redeploy the new API proxy
  D. Add required headers to the RAML specification and redeploy the new API proxy

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  Explanation/Reference:

  Correct answer is Add required headers to RAML specification and redeploy new API proxy MuleSoft Doc Ref : https://docs.mulesoft.com/api-manager/2.x/tutorial-manage-an-api Steps are as below :

  Add the Required RAML Snippet

  SLA-based rate limiting requires adding a RAML or OAS snippet to your API. This procedure demonstrates adding a RAML snippet.

  Specify the client ID and secret as query parameters.

  Add a section called traits: at the RAML root level to define query parameters:

  traits:

  -client-id-required:

  queryParameters:

  client_id:

  type: string

  client_secret:

  type: string

  Add the client-id-required trait to every method that requires these query parameters:

  /users:

  get:

  is: [client-id-required]

  description: Gets a list of JSONPlaceholder users.

  Step 2 : Add the SLA Tier in API Manager Step 3 : Apply the policy and redeploy Reference: https://docs.mulesoft.com/api-manager/2.x/tutorial-manage-an-api

• Question 32:

  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?

  

  A. payload
  B. payload quantity var
  C. payload color query param
  D. payload quantity var color query param
  B. payload quantity var

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  Explanation/Reference:

  Correct answer is as below. Query parameters are replaced when external HTTP call is invoked. payload producer var

• Question 33:

  An API implementation has been deployed to CloudHub and now needs to be governed. IT will not allocate additional vCore for a new Mule application to act as an API proxy.

  What is the next step to preseive the current vCore usage, but still allow the Mule application to be managed by API Manager?

  A. Register the same API implementation in Runtime Manager to connect to API Manager
  B. Modify the API implementation to use auto-discovery to register with API Manager
  C. Upload the Mule application's JAR file to the API instance in API Manager
  D. Deploy the same API implementation behind a VPC and configure the VPC to connect to API Manager
  B. Modify the API implementation to use auto-discovery to register with API Manager

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  Explanation/Reference:

  Correct answer is Modify the API implementation to use auto-discovery to register with API Manager API Autodiscovery Configuring autodiscovery allows a deployed Mule runtime engine (Mule) application to connect with API Manager to download and manage policies and to generate analytics data. Additionally, with autodiscovery, you can configure your Mule applications to act as their own API proxy. When autodiscovery is correctly configured in your Mule application, you can say that your application's API is tracked by (green dot) or paired to API Manager. You can associate an API in a Mule setup with only one autodiscovery instance at a given time. MuleSoft Doc Ref : https://docs.mulesoft.com/api-manager/2.x/api-auto-discovery-new-concept

• Question 34:

  Refer to the exhibit.

  

  How many private flows does APIKIT generate from the RAML specification?

  A. 1
  B. 2
  C. 3
  D. 4
  D. 4

• Question 35:

  How are query parameters dynamically passed to an outbound REST request using an HTTP Request operation?

  A. As query parameters in the HTTP Request operation
  B. As URI parameters in the HTTP Request operation
  C. In the Mule event's payload
  D. As flow variables
  A. As query parameters in the HTTP Request operation

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  Explanation/Reference:

  In General > Request > Query Parameters, click the plus icon (+) to add a parameter to a request. Type a name and value for the parameter or use a DataWeave expression to define the name and value.

  

• Question 36:

  What execution model is used by For Each and Batch Job scopes?

  A. For Each is single-threaded and Batch Job is multi-threaded
  B. Both are single-threaded
  C. Both are multi-threaded
  D. Batch Job is single-threaded and For Each Is multi-threaded
  A. For Each is single-threaded and Batch Job is multi-threaded

• Question 37:

  Refer to the exhibits.

  

  A Mule application has an HTTP Request that is configured with hardcoded values. To change this, the Mule application is configured to use a properties file named config.yaml.

  What valid expression can the HTTP Request host value be set to so that it is no longer hardcoded?

  A. ${training.host}
  B. ${training:host}
  C. #[training:host]
  D. #[training.host]
  A. ${training.host}

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  Explanation/Reference:

  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

  

• Question 38:

  What is not the function of API Gateway ?

  A. Determine which traffic is authorized to pass through the API to backend services
  B. Meter the traffic flowing through
  C. Logs all transactions , collecting and tracking analytics data
  D. Specify throttling , security and other policies
  D. Specify throttling , security and other policies

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  Explanation/Reference:

  Correct answer is Specify throttling , security and other policies MuleSoft Doc Ref : https://docs.mulesoft.com/api-manager/2.x/api-gateway-capabilities-mule4 API Gateway is responsible for below functions. 1) Determine which traffic is authorized 2) Meter the traffic 3) Logs transaction 4) Apply throttling and other policies (Not specifying. These are specified in API Manager)

  

• Question 39:

  A flow needs to combine and return data from two different data sources. It contains a Database SELECT operation followed by an HTTP Request operation. What is the method to capture both payloads so the payload from the second request does not overwrite that from the first?

  A. Put the Database SELECT operation inside a Cache scope
  B. Put the Database SELECT operation inside a Message Enricher scope
  C. Nothing, previous payloads are combined into the next payload
  D. Save the payload from the Database SELECT operation to a variable
  D. Save the payload from the Database SELECT operation to a variable

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  Explanation/Reference:

  Correct answer is Save the payload from the Database SELECT operation to a variable Response from HTTP request will override the payload and hence response of database SELECT can be lost. Best way to preserve is to assign payload of first operation to variable using TransformMessage.

• Question 40:

  How can you call a subflow from Dataweave?

  A. Not possible in Mule 4
  B. Import function
  C. Lookup function
  D. Include function
  A. Not possible in Mule 4

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  Explanation/Reference:

  This is a trick question.

  You can call only flows from DataWeave using lookup function. Note that lookup function does not support calling subflows.

  A subflow needs a parent context to inherit behaviors from such as exception handling, which a flow does not need

  Hence correct answer is Not possible in Mule 4