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Pass Your Exam With 100% Verified MCD-Level-2 Exam Questions [Q21-Q42]

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Pass Your Exam With 100% Verified MCD-Level-2 Exam Questions

MCD-Level-2 Dumps PDF – MCD-Level-2 Real Exam Questions Answers

QUESTION 21
Which pattern can a web API use to notify its client of state changes as soon as they occur?

HTTP Webhock

Shared database trigger

Schedule Event Publisher

ETL data load

Explanation
A web API can use HTTP Webhook to notify its client of state changes as soon as they occur. A webhook is an HTTP callback that allows an API to send real-time notifications to another system or application when an event happens. The client registers a URL with the API where it wants to receive notifications, and then the API sends an HTTP request to that URL with information about the event. References:
https://docs.mulesoft.com/connectors/webhook/webhook-connector

QUESTION 22
The flow is invoicing a target API. The API’s protocol is HTTPS. The TLS configuration in the HTTP Request Configuration global element is set to None. A web client submits a request to
http:localhost:8081/vehicles.

If the certificate of the target API is signed by a certificate authority (CA), what is true about the HTTP Request operation when the flow executes?

The HTTP Request operation will succeed if the CA’S certificate is present in the JRE’s default keystore

The HTTP Request operation will succeed if the CA’s certificate is present in the JRE’s default truststore.

The HTTP Request operation will always succeed regardless of the CA

The HTTP Request operation will always fail regardless of the CA

Explanation
The HTTP Request operation will use the default truststore of the JRE to validate the certificate of the target API. If the CA’s certificate is present in the truststore, the operation will succeed. Otherwise, it will fail with a handshake exception. References: https://docs.mulesoft.com/mule-runtime/4.3/tls-configuration#tls-default

QUESTION 23
Refer to the exhibit.

Based on the code snippet, schema,json file, and payload below, what is the outcome of the given code snippet when a request is sent with the payload?

The Mule flow will execute successfully with status code 200, and the response will be the JSON sent in request

The Mule flow will execute successfully with status code 204

The Mule flow will throw the exception ‘JSON:SCHEMA_NOT_HONOURED

The Mule flow will execute successfully with status code 200m and a response will display the message
” Age in years which must equal to or greater than zero.”

Explanation
Based on the code snippet, schema.json file, and payload below, the outcome of the given code snippet when a request is sent with the payload is that the Mule flow will throw the exception
‘JSON:SCHEMA_NOT_HONOURED’. This is because the payload does not conform to the schema.json file, which specifies that age must be a number greater than or equal to zero. The payload has age as a string with a negative value, which violates the schema. Therefore, the validate-schema operation throws an error with type
‘JSON:SCHEMA_NOT_HONOURED’. References:
https://docs.mulesoft.com/json-module/1.1/json-validate-schema

QUESTION 24
Refer to the exhibit.
What action must be performed to log all the errors raised by the VM Connector?

Add <AsyncLOgger name=’orgroute.extensions vm’ level=ERROR’I> inside the Logger tag

Add <AsyncLOgger name=’orgroute.extensions vm’ level=ERROR’/> inside the Appenders tag

Configure <Logger level-‘ERROR’/> inside the VM Connector configuration

Nothing, as error-level events are automatically logged

Explanation
To log all the errors raised by the VM Connector, the developer needs to add an async logger with the name
‘org.mule.extension.vm’ and the level ‘ERROR’ inside the appenders tag of the log4j2.xml file. This will enable logging all error-level events generated by the VM Connector to the console appender. References:
https://docs.mulesoft.com/mule-runtime/4.3/logging-in-mule#configuring-custom-logging-settings

QUESTION 25
Refer to the exhibit.

A developer generates the base scaffolding for an API in Anypoint Studio.
Which HTTP status code is returned while testing using the API Kit console if no values are entered in client-secret?

HTTP status code:200

HTTP status code:403

HTTP status code:400

HTTP status code:500

Explanation
Based on the code snippet and schema.json file below, when testing using the API Kit console if no values are entered in client-secret, HTTP status code 403 (FORBIDDEN) is returned. This is because client-secret is defined as a required header parameter in schema.json file, which means that it must be present in every request. If no values are entered in client-secret, then it is equivalent to omitting this header parameter, which violates the schema and causes APIKit Router to return HTTP status code 403. References:
https://docs.mulesoft.com/apikit/4.x/apikit-4-headers

QUESTION 26
A custom policy needs to be developed to intercept all cutbound HTTP requests made by Mule applications.
Which XML element must be used to intercept outbound HTTP requests?

It is not possible to intercept outgoing HTTP requests, only inbound requests

http-policy:source

htt-policy:operation

http-policy:processor

Explanation
The http-policy:processor element is used to intercept outbound HTTP requests made by Mule applications. It allows customizing the request before it is sent to the target API and modifying the response after it is received from the target API. References:
https://docs.mulesoft.com/api-manager/2.x/policy-mule4-custom-policy#policy-xml-file

QUESTION 27
In a Mule project, Flow-1 contains a flow-ref to Flow-2 depends on data from Flow-1 to execute successfully.
Which action ensures the test suites and test cases written for Flow-1 and Flow-2 will execute successfully?

Use ‘After Test Case’ to produce the data needed from Flow-1 test cases to pass to Flow-2 test cases

Use ”Before Test Case” To collect data from Flow-1 test cases before running Flow-2 test cases

Chain together the test suites and test cases for Flow-1 and Flow-2

Use ”Set Event to pass the input that is needed, and keep the test cases for Flow-1 and Flow-2 independent

Explanation
To ensure the test suites and test cases written for Flow-1 and Flow-2 will execute successfully, the developer should use a Set Event processor to pass the input that is needed by Flow-2, and keep the test cases for Flow-1 and Flow-2 independent. This way, the developer can isolate the testing of each flow and avoid coupling them together. References: https://docs.mulesoft.com/munit/2.3/munit-test-flow

QUESTION 28
Refer to the exhibit.

A Mule application pom.xml configures the Maven Resources plugin to exclude parsing binary files in the project’s src/main/resources/certs directory.
Which configuration of this plugin achieves a successful build?

Explanation
To configure the Maven Resources plugin to exclude parsing binary files in the project’s src/main/resources/certs directory, option C should be used. This option specifies that any files with .cer or .jks extensions under the certs directory should be excluded from filtering. Filtering is a process of replacing placeholders with actual values in resource files during the build process. Binary files should not be filtered because they may become corrupted or unusable. References:
https://maven.apache.org/plugins/maven-resources-plugin/examples/filter.html
https://maven.apache.org/plugins/maven-resources-plugin/examples/include-exclude.html

QUESTION 29
What is the MuleSoft recommended method to encrypt sensitive property data?

The encryption key and sensitive data should be different for each environment

The encryption key should be identical for all environments

The encryption key should be identical for all environments and the sensitive data should be different for each environment

The encryption key should be different for each environment and the sensitive data should be the same for all environments

Explanation
The MuleSoft recommended method to encrypt sensitive property data is to use the Secure Properties Tool that comes with Anypoint Studio. This tool allows encrypting properties files with a secret key and then decrypting them at runtime using the same key. The encryption key and sensitive data should be different for each environment to ensure security and avoid accidental exposure of sensitive data. References:
https://docs.mulesoft.com/mule-runtime/4.3/secure-configuration-properties

QUESTION 30
A Mule application defines as SSL/TLS keystore properly ’tis,keystore.keyPassword” as secure.
How can this property be referenced to access its value within the application?

#{secure::tiskeystore,keyPassowrd}

${secure::tiskeystore,keyPassowrd}

p{secure::tiskeystore,keyPassowrd}

Explanation
secure::tiskeystore,keyPassowrdShortExplanationofCorrectAnswerOnly:Toreferenceasecurepropertyvaluewithin In this case, the property name is tiskeystore,keyPassword, so the correct syntax is
${secure::tiskeystore,keyPassowrd}. References:
https://docs.mulesoft.com/mule-runtime/4.3/secure-configuration-properties#referencing-secure-properties

QUESTION 31
Mule application A is deployed to CloudHub and is using Object Store v2. Mute application B is also deployed to CloudHub.
Which approach can Mule application B use to remove values from Mule application A’S Object Store?

Object Store v2 REST API

CloudHub Connector

Object Store Connector

CloudHub REST API

Explanation
To remove values from Mule application A’s Object Store v2, Mule application B can use Object Store v2 REST API. This API allows performing operations on Object Store v2 resources using HTTP methods, such as GET, POST, PUT, and DELETE. Mule application B can use the DELETE method to remove values from Mule application A’s Object Store v2 by specifying the object store ID and the key of the value to delete.
References: https://docs.mulesoft.com/object-store/osv2-apis

QUESTION 32
A developer has created the first version of an API designed for business partners to work commodity prices.
What should developer do to allow more than one major version of the same API to be exposed by the implementation?

In Design Center, open the RAML and modify each operation to include the major version number

In Anypoint Studio, generate scaffolding from the RAML, and the modify the <http:listerner> in the generated flows to include a parameter to replace the version number

In Design Center, open the RAML and modify baseUn to include a variable that indicates the version number

In Anypoint Studio, generate scaffolding from the RAML, and then modify the flow names generated by APIKit to include a variable with the major version number

Explanation
To allow more than one major version of the same API to be exposed by the implementation, the developer should modify the baseUri property in the RAML file to include a variable that indicates the version number.
The baseUri property defines the base URL of the API and can include variables that are replaced with actual values when mocking or deploying the API. By using a variable for the version number, the developer can expose different versions of the API using different base URLs and avoid conflicts or confusion. References:
https://docs.mulesoft.com/api-designer/design-modify-raml-specs#baseuri
https://docs.mulesoft.com/api-manager/2.x/api-versioning

QUESTION 33
Refer to the exhibit.

When creating a new project, which API implementation allows for selecting the correct API version and scaffolding the flows from the API specification?

Import a published API

Generate a local RAML from anypoint Studio

Download RAML from Design Center’

Import RAML from local file

Explanation
To create a new project that selects the correct API version and scaffolds the flows from the API specification, the developer should import a published API. This option allows importing an API specification that has been published to Anypoint Exchange or Design Center, and selecting a specific version of that API specification.
The developer can also choose to scaffold flows based on that API specification. References:
https://docs.mulesoft.com/apikit/4.x/apikit-4-new-project-task

QUESTION 34
A developer is working on a project that requires encrypting all data before sending it to a backend application. To accomplish this, the developer will use PGP encryption in the Mule 4 Cryptography module.
What is required to encrypt the data before sending it to the backend application?

The application needs to configure HTTPS TLS context information to encrypt the data

The application needs to both the private and public keys to encrypt the data

The application needs the public key from the backend service to encrypt the data

The application needs the private key from the backend service to encrypt the data

Explanation
To encrypt the data before sending it to the backend application using PGP encryption, the application needs the public key from the backend service. PGP encryption uses a public-key cryptography system, which means that each party has a pair of keys: a public key and a private key. The public key is used to encrypt data, and the private key is used to decrypt data. Therefore, to encrypt data for a specific recipient (the backend service), the application needs to use the recipient’s public key. The recipient can then use its own private key to decrypt the data. References: https://docs.mulesoft.com/mule-runtime/4.3/cryptography-pgp

QUESTION 35
Refer to the exhibit.
What required changes can be made to give a partial successful response in case the United Airlines API returns with a timeout?

Add a Scatter-gather component inside a Try scope.
Set the payload to a default value ‘Error’ inside the error handler using the On Error Propagate scope.

Add Flow Reference components inside a Try scope.
Set the payload to a default value” insider the error handler using the ON Error Continue scope

Add Flow Reference components inside a Try scope
Set the payload to a default value ” inside the error handler using the On Error Propagate scope

Add a Scatter-Gather component inside a Try scope.
Set the payload to a default value ‘Error” inside the error handler using the On Error Continue scope.

Explanation
To give a partial successful response in case the United Airlines API returns with a timeout, the developer should add a Scatter-Gather component inside a Try scope, and set the payload to a default value ‘Error’ inside the error handler using the On Error Continue scope. A Scatter-Gather component allows sending multiple requests concurrently and aggregating the responses into an array. A Try scope allows handling errors that occur within it using an error handler. An On Error Continue scope allows continuing the flow execution after handling an error. Therefore, by using these components, the developer can send requests to both APIs in parallel, handle any timeout errors from United Airlines API, and return a partial response with a default value for that API. References: https://docs.mulesoft.com/mule-runtime/4.3/scatter-gather-concept
https://docs.mulesoft.com/mule-runtime/4.3/try-scope-concept
https://docs.mulesoft.com/mule-runtime/4.3/on-error-continue-concept

QUESTION 36
A heathcare customer wants to use hospital system data, which includes code that was developed using legacy tools and methods. The customer has created reusable Java libraries in order to read the data from the system.
What is the most effective way to develop an API retrieve the data from the hospital system?

Refer to JAR files in the code

Include the libraries writes deploying the code into the runtime

Create the Java code in your project and invoice the data from the code

Install libraries in a local repository and refer to it in the pm.xml file

Explanation
To develop an API that retrieves data from a hospital system using reusable Java libraries, the developer should install libraries in a local repository and refer to it in the pom.xml file. This way, the developer can use Maven to manage dependencies and invoke Java code from Mule applications using Java Module operations.
References:
https://docs.mulesoft.com/mule-runtime/4.3/java-module-reference#add-the-java-module-to-your-project
https://docs.mulesoft.com/mule-runtime/4.3/java-module-reference#invoke-java-code

QUESTION 37
The HTTP Request operation raises an HTTP CONNECTIVITY error.
Which HTTP status code and body are returned to the web client?

HTTP Status Code:200.
Body ‘Error in processing your request

HTTP Status Code:500.
Body ‘The HTTP CONNECTIVITY Error description

HTTP Status Code:500.
Body ‘Error in processing your request

Explanation
When the HTTP Request operation raises an HTTP CONNECTIVITY error, it triggers an on-error-continue handler that sets a payload with ‘Error in processing your request’. Since no status code is explicitly set in this handler, it defaults to 500 (INTERNAL SERVER ERROR). Therefore, the web client receives an HTTP response with status code 500 and body ‘Error in processing your request’. References:
https://docs.mulesoft.com/mule-runtime/4.3/error-handling#on-error-continue

QUESTION 38
A healthcare portal needs to validate the token that it sends to a Mule API. The developer plans to implement a custom policy using the HTTP Policy Transform Extension to match the token received in the header from the heathcare portal.
Which files does the developer need to create in order to package the custom policy?

Deployable ZIP file, YAML configuration file

JSON properties file, YAML configuration file

JSON properties file, XML template file

XML template file, YAML configuration file

Explanation
To package a custom policy using the HTTP Policy Transform Extension, the developer needs to create an XML template file and a YAML configuration file. The XML template file defines the policy logic using Mule components and placeholders for user-defined properties. The YAML configuration file defines the metadata of the policy, such as its name, description, category, parameters, and dependencies. References:
https://docs.mulesoft.com/api-manager/2.x/http-policy-transform#packaging-the-policy

QUESTION 39
Two APIs are deployed to a two-node on-prem cluster. Due to a requirements change, the two APIs must communicate to exchange data asynchronously.

If the two APIs use the same domain, the VM Connector can be leveraged

The VM Connector is used to inter-application communication, so it is not possible to use the VM Connector

Instead of using the VM Connector use <flow-ref>directly

It is not possible to use the VM Connector since the APIs are running in a cluster mode and each mode has it own set of VM Queues

Explanation
To communicate asynchronously between two APIs deployed to a two-node on-prem cluster, the developer can use the VM Connector if the two APIs use the same domain. The VM Connector allows passing messages between different Mule applications within a single Mule runtime instance or across different instances using shared memory or persistent storage. If two APIs are deployed under the same domain, they can share resources such as VM queues and communicate asynchronously using VM Connector operations. References:
https://docs.mulesoft.com/mule-runtime/4.3/vm-connector
https://docs.mulesoft.com/mule-runtime/4.3/shared-resources

QUESTION 40
Which type of cache invalidation does the Cache scope support without having to write any additional code?

Write-through invalidation

White-behind invalidation

Time to live

Notification-based invalidation

Explanation
The Cache scope supports time to live (TTL) as a cache invalidation strategy without having to write any additional code. TTL specifies how long the cached response is valid before it expires and needs to be refreshed. The Cache scope also supports custom invalidation strategies using MEL or DataWeave expressions. References: https://docs.mulesoft.com/mule-runtime/4.3/cache-scope#cache_invalidation

QUESTION 41
When a client and server are exchanging messages during the mTLS handshake, what is being agreed on during the cipher suite exchange?

A protocol

The TLS version

An encryption algorithm

The Public key format

Explanation
A cipher suite is a set of cryptographic algorithms that are used to secure the communication between a client and a server. A cipher suite consists of four components: a key exchange algorithm, an authentication algorithm, an encryption algorithm, and a message authentication code (MAC) algorithm. During the cipher suite exchange, the client and the server agree on which encryption algorithm to use for encrypting and decrypting the data. References: https://docs.mulesoft.com/mule-runtime/4.3/tls-configuration#cipher-suites

QUESTION 42
The Center for Enablement team published a common application as a reusable module to the central Nexus repository.
How can the common application be included in all API implementations?

Download the common application from Naxus and copy it to the src/main/resources folder in the API

Copy the common application’s source XML file and out it in a new flow file in the src/main/mule folder

Add a Maven dependency in the PCM file with multiple-plugin as <classifier>

Add a Maven dependency in the POM file with jar as <classifier>

Explanation
To include a common application as a reusable module in all API implementations, the developer should add a Maven dependency in the POM file with jar as <classifier>. This way, the developer can reuse Mule code from another application by packaging it as a JAR file and adding it as a dependency in the POM file of the API implementation. The classifier element specifies that it is a JAR file. References:
https://docs.mulesoft.com/mule-runtime/4.3/mmp-concept#add-a-maven-dependency-to-the-pom-file

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