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MuleSoft Certified Platform Architect - Level 1

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Total Questions : 95

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Question # 1

A retail company is using an Order API to accept new orders. The Order API uses a JMS queue to submit orders to a backend order management service. The normal load for orders is being handled using two (2) CloudHub workers, each configured with 0.2 vCore. The CPU load of each CloudHub worker normally runs well below 70%. However, several times during the year the Order API gets four times (4x) the average number of orders. This causes the CloudHub worker CPU load to exceed 90% and the order submission time to exceed 30 seconds. The cause, however, is NOT the backend order management service, which still responds fast enough to meet the response SLA for the Order API. What is the MOST resource-efficient way to configure the Mule application's CloudHub deployment to help the company cope with this performance challenge?

Options:

A.  

Permanently increase the size of each of the two (2) CloudHub workers by at least four times (4x) to one (1) vCore

B.  

Use a vertical CloudHub autoscaling policy that triggers on CPU utilization greater than 70%

C.  

Permanently increase the number of CloudHub workers by four times (4x) to eight (8) CloudHub workers

D.  

Use a horizontal CloudHub autoscaling policy that triggers on CPU utilization greater than 70%

Discussion 0
Question # 2

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 the invocation of the fallback API provides the best resilience?

Options:

A.  

Search Anypoint Exchange for a suitable existing fallback API, and then implement invocations to this fallback API in addition to the Order API

B.  

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

C.  

Redirect client requests through an HTTP 307 Temporary Redirect status code to the fallback API whenever the Order API is unavailable

D.  

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 returned from the Order API

Discussion 0
Question # 3

A company has started to create an application network and is now planning to implement a Center for Enablement (C4E) organizational model. What key factor would lead the company to decide upon a federated rather than a centralized C4E?

Options:

A.  

When there are a large number of existing common assets shared by development teams

B.  

When various teams responsible for creating APIs are new to integration and hence need extensive training

C.  

When development is already organized into several independent initiatives or groups

D.  

When the majority of the applications in the application network are cloud based

Discussion 0
Question # 4

What is a best practice when building System APIs?

Options:

A.  

Document the API using an easily consumable asset like a RAML definition

B.  

Model all API resources and methods to closely mimic the operations of the backend system

C.  

Build an Enterprise Data Model (Canonical Data Model) for each backend system and apply it to System APIs

D.  

Expose to API clients all technical details of the API implementation's interaction wifch the backend system

Discussion 0
Question # 5

A company wants to move its Mule API implementations into production as quickly as possible. To protect access to all Mule application data and metadata, the company requires that all Mule applications be deployed to the company's customer-hosted infrastructure within the corporate firewall. What combination of runtime plane and control plane options meets these project lifecycle goals?

Options:

A.  

Manually provisioned customer-hosted runtime plane and customer-hosted control plane

B.  

MuleSoft-hosted runtime plane and customer-hosted control plane

C.  

Manually provisioned customer-hosted runtime plane and MuleSoft-hosted control plane

D.  

iPaaS provisioned customer-hosted runtime plane and MuleSoft-hosted control plane

Discussion 0
Question # 6

Which of the following best fits the definition of API-led connectivity?

Options:

A.  

API-led connectivity is not just an architecture or technology but also a way to organize people and processes for efficient IT delivery in the organization

B.  

API-led connectivity is a 3-layered architecture covering Experience, Process and System layers

C.  

API-led connectivity is a technology which enabled us to implement Experience, Process and System layer based APIs

Discussion 0
Question # 7

A system API has a guaranteed SLA of 100 ms per request. The system API is deployed to a primary environment as well as to a disaster recovery (DR) environment, with different DNS names in each environment. An upstream process API invokes the system API and the main goal of this process API is to respond to client requests in the least possible time. In what order should the system APIs be invoked, and what changes should be made in order to speed up the response time for requests from the process API?

Options:

A.  

In parallel, invoke the system API deployed to the primary environment and the system API deployed to the DR environment, and ONLY use the first response

B.  

In parallel, invoke the system API deployed to the primary environment and the system API deployed to the DR environment using a scatter-gather configured with a timeout, and then merge the responses

C.  

Invoke the system API deployed to the primary environment, and if it fails, invoke the system API deployed to the DR environment

D.  

Invoke ONLY the system API deployed to the primary environment, and add timeout and retry logic to avoid intermittent failures

Discussion 0
Question # 8

What do the API invocation metrics provided by Anypoint Platform provide?

Options:

A.  

ROI metrics from APIs that can be directly shared with business users

B.  

Measurements of the effectiveness of the application network based on the level of reuse

C.  

Data on past API invocations to help identify anomalies and usage patterns across various APIs

D.  

Proactive identification of likely future policy violations that exceed a given threat threshold

Discussion 0
Question # 9

Once an API Implementation is ready and the API is registered on API Manager, who should request the access to the API on Anypoint Exchange?

Options:

A.  

None

B.  

Both

C.  

API Client

D.  

API Consumer

Discussion 0
Question # 10

A REST API is being designed to implement a Mule application.

What standard interface definition language can be used to define REST APIs?

Options:

A.  

Web Service Definition Language(WSDL)

B.  

OpenAPI Specification (OAS)

C.  

YAML

D.  

AsyncAPI Specification

Discussion 0
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