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How to study the MuleSoft mcia - Level 1: MuleSoft Certified Integration Architect - Level 1 Exam
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NEW QUESTION # 52
A Mule application uses the Database connector.
What condition can the Mule application automatically adjust to or recover from without needing to restart or redeploy the Mule application?
- A. The credentials for accessing the database have been updated and the previous credentials are no longer valid
- B. The database server was unavailable for four hours due to a major outage but is now fully operational again
- C. One of the stored procedures being called by the Mule application has been renamed
- D. The database server has been updated and hence the database driver library/JAR needs a minor version upgrade
Answer: A
NEW QUESTION # 53
An organization is using Mulesoft cloudhub and develops API's in the latest version. As a part of requirements for one of the API's, third party API needs to be called. The security team has made it clear that calling any external API needs to have include listing As an integration architect please suggest the best way to accomplish the design plan to support these requirements?
- A. Implement the validation of includelisted IP operation
- B. Implement the Any point filter processor to implement the include list IP
- C. Implement includelist IP on the cloudhub VPC firewall to allow the traffic
- D. Implement a proxy for the third party API and enforce the IPinclude list policy and call this proxy from the flow of the API
Answer: D
Explanation:
* Requirement Analysis: The security team requires any external API call to be restricted by an IP include list. This ensures that only specified IP addresses can access the third-party API.
* Design Plan: To fulfill this requirement, implementing a proxy for the third-party API is the best approach. This proxy can enforce the IP include list policy.
* Implementation Steps:
* Create a Proxy API: Set up a new API proxy in Anypoint Platform to act as an intermediary for the third-party API.
* Configure IP Include List Policy: Within the Anypoint API Manager, apply the IP whitelist policy to the proxy API. This policy will ensure that only requests from specified IP addresses are allowed to reach the third-party API.
* Modify Main API Flow: Update the flow of your main API to call the newly created proxy API instead of directly calling the third-party API.
* Testing: Conduct thorough testing to ensure that the proxy API correctly forwards requests to the third-party API only if the requests originate from IPs in the include list.
* Advantages:
* Security: This method ensures that only approved IPs can access the third-party API, adhering to the security team's requirements.
* Manageability: Centralizes the IP restriction management within the API Manager, simplifying maintenance and updates.
References
* MuleSoft Documentation on API Proxies
* MuleSoft Documentation on IP Whitelist Policy
NEW QUESTION # 54
An airline is architecting an API connectivity project to integrate its flight data into an online aggregation website. The interface must allow for secure communication high-performance and asynchronous message exchange.
What are suitable interface technologies for this integration assuming that Mulesoft fully supports these technologies and that Anypoint connectors exist for these interfaces?
- A. SOAP over HTTPS HOP over TLS gRPC over HTTPS
- B. AsyncAPI over HTTPS
AMQP with RabbitMQ JSON/REST over HTTPS - C. CSV over FTP YAM L over TLS JSON over HTTPS
- D. XML over ActiveMQ XML over SFTP XML/REST over HTTPS
Answer: B
Explanation:
For integrating flight data into an online aggregation website with secure, high-performance, and asynchronous message exchange, the most suitable interface technologies supported by MuleSoft are:
* AsyncAPI over HTTPS: AsyncAPI is a specification for asynchronous APIs, which is ideal for high-performance, event-driven communication. Using HTTPS ensures secure communication.
* AMQP with RabbitMQ: AMQP (Advanced Message Queuing Protocol) is a protocol for message-oriented middleware. RabbitMQ is a popular message broker that supports AMQP, allowing for reliable and asynchronous message exchange.
* JSON/REST over HTTPS: JSON is a lightweight data-interchange format, and REST (Representational State Transfer) is an architectural style for designing networked applications. Using HTTPS ensures secure communication.
Implementation Steps:
* Define the AsyncAPI specification for the flight data events and set up the infrastructure to handle these events over HTTPS.
* Set up RabbitMQ and configure AMQP for message queuing. Ensure that your MuleSoft application is capable of consuming and producing messages using the RabbitMQ connector.
* Implement RESTful APIs using JSON over HTTPS to expose the flight data securely.
These technologies collectively ensure secure, asynchronous, and high-performance integration.
References:
* MuleSoft Documentation: AsyncAPI
* MuleSoft Documentation: RabbitMQ Connector
* MuleSoft Documentation: JSON and REST APIs
NEW QUESTION # 55
Refer to the exhibit.
This Mule application is deployed to multiple Cloudhub workers with persistent queue enabled. The retrievefile flow event source reads a CSV file from a remote SFTP server and then publishes each record in the CSV file to a VM queue. The processCustomerRecords flow's VM Listner receives messages from the same VM queue and then processes each message separately.
How are messages routed to the cloudhub workers as messages are received by the VM Listener?
- A. Each message is routed to the SAME Cloudhub worker that retrieved the file, thereby BINDING ALL messages to ONLY that ONE Cloudhub worker
- B. Each message is duplicated to ALL of the Cloudhub workers, thereby SHARING EACH message with ALL the Cloudhub workers.
- C. Each message is routed to ONE of the Cloudhub workers in a DETERMINSTIC round robin fashion thereby EXACTLY BALANCING messages among the cloudhub workers
- D. Each messages routes to ONE of the available Clouhub workers in a NON- DETERMINSTIC non round-robin fashion thereby APPROXIMATELY BALANCING messages among the cloudhub workers
Answer: D
NEW QUESTION # 56
A Mule application is being designed To receive nightly a CSV file containing millions of records from an external vendor over SFTP, The records from the file need to be validated, transformed. And then written to a database. Records can be inserted into the database in any order.
In this use case, what combination of Mule components provides the most effective and performant way to write these records to the database?
- A. Use a DataWeave map operation and an Async scope to insert records one by one into the database.
- B. Use a Parallel for Each scope to Insert records one by one into the database
- C. Use a Scatter-Gather to bulk insert records into the database
- D. Use a Batch job scope to bulk insert records into the database.
Answer: D
Explanation:
Correct answer is Use a Batch job scope to bulk insert records into the database
* Batch Job is most efficient way to manage millions of records.
A few points to note here are as follows :
Reliability: If you want reliabilty while processing the records, i.e should the processing survive a runtime crash or other unhappy scenarios, and when restarted process all the remaining records, if yes then go for batch as it uses persistent queues.
Error Handling: In Parallel for each an error in a particular route will stop processing the remaining records in that route and in such case you'd need to handle it using on error continue, batch process does not stop during such error instead you can have a step for failures and have a dedicated handling in it.
Memory footprint: Since question said that there are millions of records to process, parallel for each will aggregate all the processed records at the end and can possibly cause Out Of Memory.
Batch job instead provides a BatchResult in the on complete phase where you can get the count of failures and success. For huge file processing if order is not a concern definitely go ahead with Batch Job
NEW QUESTION # 57
An Organization has previously provisioned its own AWS VPC hosting various servers. The organization now needs to use Cloudhub to host a Mule application that will implement a REST API once deployed to Cloudhub, this Mule application must be able to communicate securely with the customer-provisioned AWS VPC resources within the same region, without being interceptable on the public internet.
What Anypoint Platform features should be used to meet these network communication requirements between Cloudhub and the existing customer-provisioned AWS VPC?
- A. Use VM queues in the Mule application to allow any non-mule assets within the customer provisioned AWS VPC to subscribed to and receive messages
- B. Configure an external identity provider (IDP) in Anypoint Platform with certificates from the customer provisioned AWS VPC
- C. Add a default API Whitelisting policy to API Manager to automatically whitelist the customer provisioned AWS VPC IP ranges needed by the Mule applicaton
- D. Add a Mulesoft hosted Anypoint VPC configured and with VPC Peering to the AWS VPC
Answer: D
Explanation:
Correct answer is: Add a Mulesoft hosted Anypoint VPC configured and with VPC Peering to the AWS VPC * Connecting to your Anypoint VPC extends your corporate network and allows CloudHub workers to access resources behind your corporate firewall.
* You can connect on-premises data centers through a secured VPN tunnel, or a private AWS VPC through VPC peering, or by using AWS Direct Connect.
MuleSoft Doc Reference : https://docs.mulesoft.com/runtime-manager/virtual-private-cloud
NEW QUESTION # 58
A mule application uses an HTTP request operation to involve an external API.
The external API follows the HTTP specification for proper status code usage.
What is possible cause when a 3xx status code is returned to the HTTP Request operation from the external API?
- A. The request was NOT RECEIVED by the external API
- B. The request was Redirected to a different URL by the external API
- C. The request was not accepted by the external API
- D. The request was ACCEPTED by the external API
Answer: D
NEW QUESTION # 59
An organization is designing multiple new applications to run on CloudHub in a single Anypoint VPC and that must share data using a common persistent Anypoint object store V2 (OSv2).
Which design gives these mule applications access to the same object store instance?
- A. An Anypoint MQ connector configured to directly access the persistent object store
- B. Object store V2 can be shared across cloudhub applications with the configured osv2 connector
- C. The object store V2 rest API configured to access the persistent object store
- D. AVM connector configured to directly access the persistence queue of the persistent object store
Answer: C
NEW QUESTION # 60
What is a defining characteristic of an integration-Platform-as-a-Service (iPaaS)?
- A. On-premises
- B. No-code
- C. A Cloud-based
- D. Code-first
Answer: C
NEW QUESTION # 61
An integration Mute application consumes and processes a list of rows from a CSV file. Each row must be read from the CSV file, validated, and the row data sent to a JMS queue, in the exact order as in the CSV file.
If any processing step for a row falls, then a log entry must be written for that row, but processing of other rows must not be affected.
What combination of Mute components is most idiomatic (used according to their intended purpose) when Implementing the above requirements?
- A. VM connector first Successful scope On Error Propagate scope
- B. Scatter-Gather component On Error Continue scope
- C. Async scope On Error Propagate scope
- D. For Each scope On Error Continue scope
Answer: D
NEW QUESTION # 62
An API has been unit tested and is ready for integration testing. The API is governed by a Client ID Enforcement policy in all environments.
What must the testing team do before they can start integration testing the API in the Staging environment?
- A. They must access the API portal and create an API notebook using the Client ID and Client Secret supplied by the API portal in the Staging environment
- B. They must request access to the Staging environment and obtain the Client ID and Client Secret for that environment to be used for testing the API
- C. They must request access to the API instance in the Staging environment and obtain a Client ID and Client Secret to be used for testing the API
- D. They must be assigned as an API version owner of the API in the Staging environment
Answer: C
Explanation:
Explanation
* It's mentioned that the API is governed by a Client ID Enforcement policy in all environments.
* Client ID Enforcement policy allows only authorized applications to access the deployed API implementation.
* Each authorized application is configured with credentials: client_id and client_secret.
* At runtime, authorized applications provide the credentials with each request to the API implementation.
MuleSoft Reference: https://docs.mulesoft.com/api-manager/2.x/policy-mule3-client-id-based-policies
NEW QUESTION # 63
An external web UI application currently accepts occasional HTTP requests from client web browsers to change (insert, update, or delete) inventory pricing information in an inventory system's database. Each inventory pricing change must be transformed and then synchronized with multiple customer experience systems in near real-time (in under 10 seconds). New customer experience systems are expected to be added in the future.
The database is used heavily and limits the number of SELECT queries that can be made to the database to 10 requests per hour per user.
What is the most scalable, idiomatic (used for its intended purpose), decoupled. reusable, and maintainable integration mechanism available to synchronize each inventory pricing change with the various customer experience systems in near real-time?
- A. Write a Mule application with a Database On Table Row event source configured for the inventory pricing database, with the ID attribute set to an appropriate database column In the same flow, use a Batch Job scope to publish transformed Inventory-pricing records to an Anypoint MQ queue Write other Mule applications to subscribe to the Anypoint MQ queue, transform each received message, and then update the Mule application's corresponding customer experience system(s)
- B. Add a trigger to the inventory-pricing database table so that for each change to the inventory pricing database, a stored procedure is called that makes a REST call to a Mule application Write the Mule application to publish each Mule event as a message to an Anypoint MQ exchange Write other Mule applications to subscribe to the Anypoint MQ exchange, transform each received message, and then update the Mule application's corresponding customer experience system(s)
- C. Write a Mule application with a Database On Table Row event source configured for the inventory pricing database, with the watermark attribute set to an appropriate database column In the same now, use a Scatter-Gather to call each customer experience system's REST API with transformed inventory-pricing records
- D. Replace the external web UI application with a Mule application to accept HTTP requests from client web browsers In the same Mule application, use a Batch Job scope to test if the database request will succeed, aggregate pricing changes within a short time window, and then update both the inventory pricing database and each customer experience system using a Parallel For Each scope
Answer: B
NEW QUESTION # 64
An integration Mute application is being designed to process orders by submitting them to a backend system for offline processing. Each order will be received by the Mute application through an HTTPS POST and must be acknowledged immediately. Once acknowledged, the order will be submitted to a backend system. Orders that cannot be successfully submitted due to rejections from the backend system will need to be processed manually (outside the backend system).
The Mule application will be deployed to a customer-hosted runtime and is able to use an existing ActiveMQ broker if needed.
The backend system has a track record of unreliability both due to minor network connectivity issues and longer outages.
What idiomatic (used for their intended purposes) combination of Mule application components and ActiveMQ queues are required to ensure automatic submission of orders to the backend system, while minimizing manual order processing?
- A. Until Successful componentMuleSoft Object Store ActiveMQ is NOT needed or used
- B. Until Successful component ActiveMQ long retry Queue ActiveMQ Dead Letter Queue for manual processing
- C. An On Error scope Non-persistent VM ActiveMQ Dead Letter Queue for manual processing
- D. An On Error scope MuleSoft Object Store ActiveMQ Dead Letter Queue for manual processing
Answer: C
NEW QUESTION # 65
A new upstream API Is being designed to offer an SLA of 500 ms median and 800 ms maximum (99th percentile) response time. The corresponding API implementation needs to sequentially invoke 3 downstream APIs of very similar complexity. The first of these downstream APIs offers the following SLA for its response time: median: 100 ms, 80th percentile: 500 ms, 95th percentile: 1000 ms. If possible, how can a timeout be set in the upstream API for the invocation of the first downstream API to meet the new upstream API's desired SLA?
- A. Do not set a timeout; the Invocation of this API Is mandatory and so we must wait until it responds
- B. No timeout is possible to meet the upstream API's desired SLA; a different SLA must be negotiated with the first downstream API or invoke an alternative API
- C. Set a timeout of 100 ms; that leaves 400 ms for the other two downstream APIs to complete
- D. Set a timeout of 50 ms; this times out more invocations of that API but gives additional room for retries
Answer: B
Explanation:
Before we answer this question , we need to understand what median (50th percentile) and 80th percentile means. If the 50th percentile (median) of a response time is 500ms that means that 50% of my transactions are either as fast or faster than 500ms.
If the 90th percentile of the same transaction is at 1000ms it means that 90% are as fast or faster and only 10% are slower. Now as per upstream SLA , 99th percentile is 800 ms which means 99% of the incoming requests should have response time less than or equal to 800 ms. But as per one of the backend API , their 95th percentile is 1000 ms which means that backend API will take 1000 ms or less than that for 95% of. requests. As there are three API invocation from upstream API , we can not conclude a timeout that can be set to meet the desired SLA as backend SLA's do not support it.
Let see why other answers are not correct.
1) Do not set a timeout --> This can potentially violate SLA's of upstream API
2) Set a timeout of 100 ms; ---> This will not work as backend API has 100 ms as median meaning only 50% requests will be answered in this time and we will get timeout for 50% of the requests. Important thing to note here is, All APIs need to be executed sequentially, so if you get timeout in first API, there is no use of going to second and third API. As a service provider you wouldn't want to keep 50% of your consumers dissatisfied. So not the best option to go with.
*To quote an example: Let's assume you have built an API to update customer contact details.
- First API is fetching customer number based on login credentials
- Second API is fetching Info in 1 table and returning unique key
- Third API, using unique key provided in second API as primary key, updating remaining details
* Now consider, if API times out in first API and can't fetch customer number, in this case, it's useless to call API 2 and 3 and that is why question mentions specifically that all APIs need to be executed sequentially.
3) Set a timeout of 50 ms --> Again not possible due to the same reason as above Hence correct answer is No timeout is possible to meet the upstream API's desired SLA; a different SLA must be negotiated with the first downstream API or invoke an alternative API
NEW QUESTION # 66
What limits if a particular Anypoint Platform user can discover an asset in Anypoint Exchange?
- A. Design Center and RAML were both used to create the asset
- B. The business groups to which the user belongs
- C. The existence of a public Anypoint Exchange portal to which the asset has been published
- D. The type of the asset in Anypoint Exchange
Answer: B
NEW QUESTION # 67
A set of integration Mule applications, some of which expose APIs, are being created to enable a new business process. Various stakeholders may be impacted by this. These stakeholders are a combination of semi- technical users (who understand basic integration terminology and concepts such as JSON and XML) and technically skilled potential consumers of the Mule applications and APIs.
What is an effective way for the project team responsible for the Mule applications and APIs being built to communicate with these stakeholders using Anypoint Platform and its supplied toolset?
- A. Capture documentation about the Mule applications and APIs inline within the Mule integration flows and use Anypoint Studio's Export Documentation feature to provide an HTML version of this documentation to the stakeholders
- B. Create Anypoint Exchange entries with pages elaborating the integration design, including API notebooks (where applicable) to help the stakeholders understand and interact with the Mule applications and APIs at various levels of technical depth
- C. Use Anypoint Design Center to implement the Mule applications and APIs and give the various stakeholders access to these Design Center projects, so they can collaborate and provide feedback
- D. Use Anypoint Exchange to register the various Mule applications and APIs and share the RAML definitions with the stakeholders, so they can be discovered
Answer: D
Explanation:
Explanation/Reference:
NEW QUESTION # 68
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To prepare for the MCIA-Level-1 exam, candidates can take advantage of MuleSoft's training courses, online resources, and practice exams. MCIA-Level-1 exam is computer-based and consists of multiple-choice questions. Candidates have 120 minutes to complete the exam and must score at least 70% to pass. Upon passing the exam, candidates will receive the MCIA-Level-1 certification, which is valid for two years.
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