QUESTION: 9

A travel company wants to publish a well-defined booking service API to be shared with its business partners. These business partners have agreed to ONLY consume SOAP services and they want to get the service contracts in an easily consumable way before they start any development. The travel company will publish the initial design documents to Anypoint Exchange, then share those documents with the business partners. When using an API-led approach.
What is the first design document the travel company should deliver to its business partners?

Create a WSDL specification using any XML editor
Create a RAML API specification using any text editor
Create an OAS API specification in Design Center
Create a SOAP API specification in Design Center

Answer(s): A

Explanation:

SOAP API specifications are provided as WSDL. Design center doesn't provide the functionality to create WSDL file. Hence WSDL needs to be created using XML editor

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QUESTION: 10

What is not true about Mule Domain Project?

This allows Mule applications to share resources
Expose multiple services within the Mule domain on the same port
Only available Anypoint Runtime Fabric
Send events (messages) to other Mule applications using VM queues

Answer(s): C

Explanation:

* Mule Domain Project is ONLY available for customer-hosted Mule runtimes, but not for Anypoint Runtime Fabric

* Mule domain project is available for Hybrid and Private Cloud (PCE). Rest all provide application isolation and can't support domain project.
What is Mule Domain Project?

* A Mule Domain Project is implemented to configure the resources that are shared among different projects. These resources can be used by all the projects associated with this domain. Mule applications can be associated with only one domain, but a domain can be associated with multiple projects. Shared resources allow multiple development teams to work in parallel using the same set of reusable connectors. Defining these connectors as shared resources at the domain level allows the team to:
Expose multiple services within the domain through the same port.
Share the connection to persistent storage.
Share services between apps through a well-defined interface.
Ensure consistency between apps upon any changes because the configuration is only set in one place.

* Use domains Project to share the same host and port among multiple projects. You can declare the http connector within a domain project and associate the domain project with other projects. Doing this also allows to control thread settings, keystore configurations, time outs for all the requests made within multiple applications. You may think that one can also achieve this by duplicating the http connector configuration across all the applications. But, doing this may pose a nightmare if you have to make a change and redeploy all the applications.

* If you use connector configuration in the domain and let all the applications use the new domain instead of a default domain, you will maintain only one copy of the http connector configuration. Any changes will require only the domain to the redeployed instead of all the applications.
You can start using domains in only three steps:
1) Create a Mule Domain project
2) Create the global connector configurations which needs to be shared across the applications inside the Mule Domain project
3) Modify the value of domain in mule-deploy.properties file of the applications

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QUESTION: 11

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?

Redirect client requests through an HTTP 303 temporary redirect status code to the fallback API whenever the Order API is unavailable
Set an option in the HTTP Requester component that invokes the order API to instead invoke a fallback API whenever an HTTP 4XX or 5XX response status code is received from Order API
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
Search Anypoint Exchange for a suitable existing fallback API and them implement invocations to their fallback API in addition to the Order API

Answer(s): 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 -
even after a certain number of retries -
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 order to complete the request and access the desired resource.

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

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QUESTION: 12

How are the API implementation , API client, and API consumer combined to invoke and process an API?

The API consumer creates an API implementation , which receives API invocations from an API such that they are processed for an API client
The API consumer creates an API client which sends API invocations to an API such that they are processed by an API implementation
An API client creates an API consumer, which receives API invocation from an API such that they are processed for an API implementation
The API client creates an API consumer which sends API invocations to an API such that they are processed by API implementation

Answer(s): C

Explanation:

The API consumer creates an API client which sends API invocations to an API such that they areprocessed by an API implementation.
This is based on below definitions API client:
· An application component · that accesses a service · by invoking an API of that service by definition of the term API over HTTP API consumer
· A business role, which is often assigned to an individual · that develops API clients, i.e., performs the activities necessary for enabling an API client to invoke APIs API implementation
· An application component · that implements the functionality

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Free MCIA-LEVEL-1-MAINTENANCE Exam Braindumps (page: 3)

QUESTION: 9

Explanation:

QUESTION: 10

Explanation:

QUESTION: 11

Explanation:

QUESTION: 12

Explanation: