Salesforce SALESFORCE-MULESOFT-DEVELOPER-I Online Practice Questions and Exam Preparation

Salesforce SALESFORCE-MULESOFT-DEVELOPER-I Online Questions & Answers

• Question 191:

  Refer to the exhibits.

  

  The two Mule configuration files belong to the same Mule project. Each HTTP Listener is configured with the same host string and the port number, path, and operation values are shown in the display names. What is the minimum number of global elements that must be defined to support all these HTTP Listeners?

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

  ---

  Explanation

  In this case three configurations will be required each for port 8000, 6000 and 7000. There would be three global elements defined for HTTP connections. Each HTTP connection will have host and port. One example shown below with host as localhost and port 6000

  

  To use an HTTP listener, you need to declare a configuration with a corresponding connection. This declaration establishes the HTTP server that will listen to requests. Additionally, you can configure a base path that applies to all listeners

  using the configuration.

  https://docs.mulesoft.com/http-connector/1.6/http-listener-ref#http-listener-configuration

• Question 192:

  What is the trait name you would use for specifying client credentials in RAML?

  A. headers
  B. client-id
  C. client-id-required
  D. cannot be specified in RAML
  C. client-id-required

  ---

  Explanation

• Question 193:

  Refer to the exhibits.

  

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

  A. The JSON payload
  B. An error message
  C. Nothing
  D. The payload convert to CVS
  A. The JSON payload

  ---

  Explanation

  Transform Message Add write_date is coverting payload in JSON format and same JSON payload is avaialble to file write processor. However, if the payload is a different format (for example, not CSV) , you can place the transformation inside the Write operation to generate content that will be written without producing a side effect on the message in transit. This is not done in this case. By default, the connector writes whatever is in the message payload. Hence JSON payload will be written to file.

• Question 194:

  What is the purpose of the api:router element in APIkit?

  A. Creates native connectors using a 3rd party Java library
  B. Serves as an API implementation
  C. Validates requests against RAML API specifications and routes them to API implementations
  D. Validates responses returned from API requests and routes them back to the caller
  C. Validates requests against RAML API specifications and routes them to API implementations

  ---

  Explanation

  The APIkit Router is a key message processor that validates requests against the provided definition, enriches messages (for example by adding default values to the messages) and routes requests to a particular flow. Also, the Router raises errors messages if errors occurs while routing, validating or processing the user request.

• Question 195:

  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

  ---

  Explanation

  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

  https://docs.mulesoft.com/api-manager/2.x/tutorial-manage-an-api

• Question 196:

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

  A. GET
  B. PATCH
  C. PUT
  D. POST
  C. PUT

  ---

  Explanation

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

• Question 197:

  A Mule project contains a DataWeave module like WebStore.dwl that defines a function named loginUser. The module file is located in the project's src/main/resources/libs/etl folder.

  What is correct DataWeave code to import all of the WebStore.dwl file's functions and then call the loginUser function for the login "[email protected]"?

  A. 1. 1. import libs.etl 2.2. --3.3. WebStore.loginUser("[email protected]")
  B. 1. 1. import * from libs::etl 2.2. --3.3. WebStore::loginUser("[email protected]")
  C. 1. 1. import libs.etl.WebStore 2.2. --3.3. loginUser("[email protected]")
  D. 1. 1. import * from libs::etl::WebStore 2.2. --3.3. loginUser("[email protected]")
  D. 1. 1. import * from libs::etl::WebStore 2.2. --3.3. loginUser("[email protected]")

  ---

  Explanation

  *

  To use custom modules, you need to import the module or functions you want to use by adding the import directive to the head of your DataWeave script, for example:

  1) Does not identify any functions to import from the String module:

  import dw::core::Strings

  2) To identify a specific function to import from the String module:

  import camelize, capitalize from dw::core::Strings

  3) To import all functions from the String module:

  import * from dw::core::Strings

  The way you import a module impacts the way you need to call its functions from a DataWeave script. If the directive does not list specific functions to import or use * from to import all functions from a function module, you need to specify the

  module when you call the function from your script.

  *

  In given scenario, it's mentioned to import all of the WebStore.dwl So correct answer is:

  https://docs.mulesoft.com/mule-runtime/4.3/dw-functions

• Question 198:

  What is minimal requirement in a flow for a Mule application to compile?

  A. Event Source
  B. Event Processors
  C. Error handlers
  D. Source and processors both
  B. Event Processors

  ---

  Explanation

  Process section is must to get compiles. Process section must have one or more processors

  

• Question 199:

  A RAML specification is defined to manage customers with a unique identifier for each customer record. What URI does MuleSoft recommend to uniquely access the customer identified with the unique ID 1234?

  A. /customers?custid=trueandcustid=1234
  B. /customers/1234
  C. /customers/custid=1234
  D. /customers?operation=getandcustid=1234
  B. /customers/1234

  ---

  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

• Question 200:

  A Database On Table Row listener retrieves data from a CUSTOMER table that contains a primary key userjd column and an increasing kxjin_date_time column. Neither column allows duplicate values.

  How should the listener be configured so it retrieves each row at most one time?

  A. Set the watermark column to the bgin_date_time column
  B. Set the target value to the last retrieved login_date_time value
  C. Set the target value to the last retrieved user_jd value
  D. Set the watermark column to the user_Id column
  A. Set the watermark column to the bgin_date_time column

  ---

  Explanation

  *

  Watermark allows the poll scope to poll for new resources instead of getting the same resource over and over again.

  *

  The database table must be ordered so that the "watermark functionality" can move effectively in the ordered list. Watermark stores the current/last picked up "record id."

  *

  If the Mule application is shut down, it will store the last picked up "record id" in the Java Object Store and the data will continue to exist in the file. This watermark functionality is valuable and enables developers to have increased transparency.

  *

  Developers do not need to create code to handle caching; it is all configurable!

  *

  There are two columns and both are unique but user_id can't guaranty sequence whereas date_time will always be in increasing order and table content can easily be ordered on the basis of last processed date_time. So correct answer is: Set the watermark column to the date_time column