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A mule application is deployed to a Single Cloudhub worker and the public URL appears in Runtime Manager as the APP URL. Requests are sent by external web clients over the public internet to the mule application App url. Each of these requests routed to the HTTPS Listener event source of the running Mule application. Later, the DevOps team edits some properties of this running Mule application in Runtime Manager. Immediately after the new property values are applied in runtime manager, how is the current Mule application deployment affected and how will future web client requests to the Mule application be handled?
A company is designing an integration Mule application to process orders by submitting them to a back-end system for offline processing. Each order will be received by the Mule application through an HTTP5 POST and must be acknowledged immediately. Once acknowledged the order will be submitted to a back-end system. Orders that cannot be successfully submitted due to the rejections from the back-end system will need to be processed manually (outside the banking system). The mule application will be deployed to a customer hosted runtime and will be able to use an existing ActiveMQ broker if needed. The ActiveMQ broker is located inside the organization's firewall. The back-end system has a track record of unreliability due to both minor network connectivity issues and longer outages. Which combination of Mule application components and ActiveMQ queues are required to ensure automatic submission of orders to the back-end system while supporting but minimizing manual order processing?
A key Cl/CD capability of any enterprise solution is a testing framework to write and run repeatable tests. Which component of Anypoint Platform provides the te6t automation capabilities for customers to use in their pipelines?
According to the National Institute of Standards and Technology (NIST), which cloud computing deployment model describes a composition of two or more distinct clouds that support data and application portability?
A company is planning to migrate its deployment environment from on-premises cluster to a Runtime Fabric (RTF) cluster. It also has a requirement to enable Mule applications deployed to a Mule runtime instance to store and share data across application replicas and restarts. How can these requirements be met?
An organization has an HTTPS-enabled Mule application named Orders API that receives requestsfrom another Mule application named Process Orders. The communication between these two Mule applications must be secured by TLS mutual authentication (two-way TLS). At a minimum, what must be stored in each truststore and keystore of these two Mule applications to properly support two-way TLS between the two Mule applications while properly protecting each Mule application's keys?
An organization is implementing a Quote of the Day API that caches today's quote. What scenario can use the CloudHub Object Store connector to persist the cache's state?
Refer to the exhibit. Anypoint Platform supports role-based access control (RBAC) to features of the platform. An organization has configured an external Identity Provider for identity management with Anypoint Platform. What aspects of RBAC must ALWAYS be controlled from the Anypoint Platform control plane and CANNOT be controlled via the external Identity Provider?
What is required before an API implemented using the components of Anypoint Platform can be managed and governed (by applying API policies) on Anypoint Platform?
An organization is not meeting its growth and innovation objectives because IT cannot deliver projects last enough to keep up with the pace of change required by the business. According to MuleSoft's IT delivery and operating model, which step should the organization lake to solve this problem?

Question 84 - MCIA - Level 1 discussion

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An API implementation is being designed that must invoke an Order API which is known to repeatedly experience downtime. For this reason a fallback API is to be called when the Order API is unavailable. What approach to designing invocation of the fallback API provides the best resilience?

A.
Redirect client requests through an HTTP 303 temporary redirect status code to the fallback APIwhenever the Order API is unavailable
Answers
A.
Redirect client requests through an HTTP 303 temporary redirect status code to the fallback APIwhenever the Order API is unavailable
B.
Set an option in the HTTP Requester component that invokes the order API to instead invoke afallback API whenever an HTTP 4XX or 5XX response status code is received from Order API
Answers
B.
Set an option in the HTTP Requester component that invokes the order API to instead invoke afallback API whenever an HTTP 4XX or 5XX response status code is received from Order API
C.
Create a separate entry for the order API in API manager and then invoke this API as a fallback API if the primary Order API is unavailable
Answers
C.
Create a separate entry for the order API in API manager and then invoke this API as a fallback API if the primary Order API is unavailable
D.
Search Anypoint Exchange for a suitable existing fallback API and them implement invocations to their fallback API in addition to the Order API
Answers
D.
Search Anypoint Exchange for a suitable existing fallback API and them implement invocations to their fallback API in addition to the Order API
Suggested answer: A

Explanation:

* Resilience testing is a type of software testing that observes how applications act under stress. It's meant to ensure the product's ability to perform in chaotic conditions without a loss of core functions or data; it ensures a quick recovery after unforeseen, uncontrollable events.

* In case an API invocation fails ó even after a certain number of retries ó it might be adequate to invoke a different API as a fallback. A fallback API, by definition, will never be ideal for the purpose of the API client, otherwise it would be the primary API.

* Here are some examples for fallback APIs:

- An old, deprecated version of the same API.

- An alternative endpoint of the same API and version (e.g. API in another CloudHub region).

- An API doing more than required, and therefore not as performant as the primary API.

- An API doing less than required and therefore forcing the API Client to offer a degraded service, which is still better than no service at all.

* API clients implemented as Mule applications offer the 'Until Successful Scope and Exception' strategies at their disposal, which together allow configuring fallback actions such as a fallback API invocation.

* All HTTP response status codes within the 3xx category are considered redirection messages. These codes indicate to the user agent (i.e. your web browser) that an additional action is required in orderto complete the request and access the desired resource

Hence correct answer is Redirect client requests through an HTTP 303 temporary redirect status codeto the fallback API whenever the Order API is unavailable

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asked 18/09/2024
jateen chibabhai
41 questions
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