Free Practice Questions for Salesforce MuleSoft-Integration-Architect-I Exam

Explanation

* Clustering is a group of servers or mule runtime which acts as a single unit.

* Mulesoft Enterprise Edition supports scalable clustering to provide high availability for the Mulesoft application.

* In simple terms, virtual servers composed of multiple nodes and they communicate and share information through a distributed shared memory grid.

* By default, Mulesoft ensures the High availability of applications if clustering implemented.

* Let's consider the scenario one of the nodes in cluster crashed or goes down and under maintenance. In such cases, Mulesoft will ensure that requests are processed by other nodes in the cluster. Mulesoft clustering also ensures that the request is load balanced between all the nodes in a cluster.

* Clustering is only supported by on-premise Mule runtime and it is not supported in Cloudhub.

Correct answer is External monitoring tools or log aggregators must be configured to recognize the new nodes

* Rest of the options are automatically taken care of when a new node is added in cluster.

Explanation

Correct answer is Untill Successful scope can be implemented while calling backend API's The Until Successful scope repeatedly triggers the scope's components (including flow references) until they all succeed or until a maximum number of retries is exceeded The scope provides option to control the max number of retries and the interval between retries The scope can execute any sequence of processors that may fail for whatever reason and may succeed upon retry

To securely consume compressed and digitally signed files from a partner's FTPS server, the following inputs are required:

PGP Public Key of the Partner:

Purpose: Used to verify the digital signature of the files received from the partner. This ensures that the files were indeed sent by the partner and have not been tampered with.

Implementation: Import the partner’s PGP public key into the Mule application.

PGP Private Key for the Company:

Purpose: Used to decrypt the files that were encrypted by the partner using the company's public key. This ensures that only the intended recipient (the company) can access the contents of the files.

Implementation: Configure the Mule application to use the company’s PGP private key for decryption.

FTP Username and Password:

Purpose: Used to authenticate and establish a connection to the partner's FTPS server. The credentials ensure that only authorized users can access the server.

Implementation: Provide the FTP credentials in the Mule application's FTPS connector configuration.

By using these inputs, the Mule application can securely connect to the FTPS server, verify the integrity and authenticity of the files using PGP, and decrypt the contents for further processing.

References

MuleSoft FTPS Connector

MuleSoft PGP Module

Explanation

Correct answer is Only MuleSoft provided certificates can be used for server side certificate

* The CloudHub Shared Load Balancer terminates TLS connections and uses its own server-side certificate.

* You would need to use dedicated load balancer which can enable you to define SSL configurations to provide custom certificates and optionally enforce two-way SSL client authentication.

* To use a dedicated load balancer in your environment, you must first create an Anypoint VPC. Because you can associate multiple environments with the same Anypoint VPC, you can use the same dedicated load balancer for your different environments.

Additional Info on SLB Vs DLB:

Table Description automatically generated

To minimize the risk of exposing sensitive data such as credit card information while still allowing it to be converted back to its original value when necessary, tokenization is the most effective approach. Tokenization replaces sensitive data with a non-sensitive equivalent, called a token, which has no exploitable value. This method ensures that the original sensitive data is stored securely and only accessible through a secure tokenization system.

In this scenario, applying a tokenization policy at the API Gateway ensures that sensitive information is replaced with tokens before the data leaves the trusted boundary. This minimizes the risk of matching sensitive data to the original. When the original data is needed, the tokenization system can detokenize the token back to its original value securely.

MuleSoft Documentation on Tokenization

Explanation

Connected Apps

The Connected Apps feature provides a framework that enables an external application to integrate with Anypoint Platform using APIs through OAuth 2.0 and OpenID Connect. Connected apps help users delegate their access without sharing sensitive credentials or giving full control of their accounts to third parties. Actions taken by connected apps are audited, and users can also revoke access at any time. Note that some products do not currently include client IDs in this release of the Connected Apps feature. The Connected Apps feature enables you to use secure authentication protocols and control an app’s access to user data. Additionally, end users can authorize the app to access their Anypoint Platform data.

Mule Ref Doc : https://docs.mulesoft.com/access-management/connected-apps-overview

In a clustered Mule runtime environment, when using a JMS listener to consume messages from a queue destination, it is essential to ensure that messages are appropriately received by all nodes in the cluster. The configuration must support high availability and scalability. Here's why option B is correct:

primaryNodeOnly="false": Setting this parameter to "false" ensures that the JMS listener is active on all nodes in the cluster, not just the primary node. This setting allows multiple instances of the JMS listener to run concurrently across different nodes, enabling them to consume messages from the JMS queue.

Shared Subscription: Using a shared subscription means that all nodes will share the consumption of messages from the queue. This approach prevents duplicate message processing, as each message is delivered to only one listener instance within the cluster. This configuration ensures that message processing is balanced across the nodes, improving throughput and reliability.

To configure the JMS listener in Mule, the XML configuration might look something like this:

xml

This setup ensures that all nodes in the cluster are involved in message processing, leveraging the high availability and load balancing capabilities of the cluster.

References

MuleSoft Documentation on JMS Listener

MuleSoft Clustering Guide

To meet the reliability requirements for Mule applications deployed to a Runtime Fabric (RTF) cluster, where data needs to be shared across application replicas and persist through restarts, the best approach is to use Anypoint Object Store v2. This service is designed to provide persistent storage that can be shared among different application instances and across restarts. Steps include:

Configure Object Store v2: Set up Anypoint Object Store v2 in the Mule application to handle data storage needs.

Persistent Data Handling: Ensure that the configuration allows data to be shared and persist, meeting the requirements for reliability and consistency.

This solution leverages MuleSoft's cloud-based storage service optimized for these use cases, ensuring data integrity and availability.

References

MuleSoft Documentation on Object Store v2

Configuring Persistent Data Storage in MuleSoft

Explanation

* Semantic Versioning is a 3-component number in the format of X.Y.Z, where :

X stands for a major version.

Y stands for a minor version:

Z stands for a patch.

So, SemVer is of the form Major.Minor.Patch Coming to our question , minor version of the API has been changed which is backward compatible. Hence there is no change required on API client end. If they want to make use of new featured that have been added as a part of minor version change they may need to change code at their end. Hence correct answer is The API client code ONLY needs to be changed if it needs to take advantage of new features.