Mulesoft-Certified Platform Architect - Level 1

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Mulesoft-Certified Platform Architect - Level 1

An API implementation is deployed on a single worker on CloudHub and invoked by external API clients (outside of CloudHub).
How can an alert be set up that is guaranteed to trigger AS SOON AS that API implementation stops responding to API invocations?

Implement a heartbeat/health check within the API and invoke it from outside the Anypoint Platform and alert when the heartbeat does not respond. ✘ Configure a "worker not responding" alert in Anypoint Runtime Manager. ✘ Handle API invocation exceptions within the calling API client and raise an alert from that API client when the API is unavailable. ✘ Create an alert for when the API receives no requests within a specified time period. ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

The implementation of a Process API must change.
What is a valid approach that minimizes the impact of this change on API clients?

Update the RAML definition of the current Process API and notify API client developers by sending them links to the updated RAML definition. ✘ Postpone changes until API consumers acknowledge they are ready to migrate to a new Process API or API version. ✘ Implement required changes to the Process API implementation so that, whenever possible, the Process API's RAML definition remains unchanged. ✘ Implement the Process API changes in a new API implementation, and have the old API implementation return an HTTP status code 301 - MovedPermanently to inform API clients they should be calling the new API implementation. ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

A System API is designed to retrieve data from a backend system that has scalability challenges.
What API policy can best safeguard the backend system?

IP whitelist ✘ SLA-based rate limiting ✘ OAuth 2 token enforcement ✘ Client ID enforcement ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

What best describes the Fully Qualified Domain Names (FQDNs), also known as DNS entries, created when a Mule application is deployed to the CloudHub Shared Worker Cloud?

A fixed number of FQDNs are created, IRRESPECTIVE of the environment and VPC design ✘ The FQDNs are determined by the application name chosen, IRRESPECTIVE of the region ✘ The FQDNs are determined by the application name, but can be modified by an administrator after deployment ✘ The FQDNs are determined by both the application name and the Anypoint Platform organization ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

When using CloudHub with the Shared Load Balancer, what is managed EXCLUSIVELY by the API implementation (the Mule application) and NOT by Anypoint Platform?

The assignment of each HTTP request to a particular CloudHub worker ✘ The logging configuration that enables log entries to be visible in Runtime Manager ✘ The SSL certificates used by the API implementation to expose HTTPS endpoints ✘ The number of DNS entries allocated to the API implementation ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

How can the application of a rate limiting API policy be accurately reflected in the RAML definition of an API?

By refining the resource definitions by adding a description of the rate limiting policy behavior ✘ By refining the request definitions by adding a remainingRequests query parameter with description, type, and example ✘ By refining the response definitions by adding the x-ratelimit-* response headers with description, type, and example ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

An organization has several APIs that accept JSON data over HTTP POST. The APIs are all publicly available and are associated with several mobile applications and web applications.
The organization does NOT want to use any authentication or compliance policies for these APIs, but at the same time, is worried that some bad actor could send payloads that could somehow compromise the applications or servers running the API implementations.

What out-of-the-box Anypoint Platform policy can address exposure to this threat?

Shut out bad actors by using HTTPS mutual authentication for all API invocations. ✘ Apply an IP blacklist policy to all APIs; the blacklist will include all bad actors. ✘ Apply a Header injection and removal policy that detects the malicious data before it is used. ✘ Apply a JSON threat protection policy to all APIs to detect potential threat vectors. ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

An API experiences a high rate of client requests (TPS) with small message payloads.
How can usage limits be imposed on the API based on the type of client application?

Use an SLA-based rate limiting policy and assign a client application to a matching SLA tier based on its type. ✘ Use a spike control policy that limits the number of requests for each client application type. ✘ Use a cross-origin resource sharing (CORS) policy to limit resource sharing between client applications, configured by the client application type. ✘ Use a rate limiting policy and a client ID enforcement policy, each configured by the client application type. ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

A code-centric API documentation environment should allow API consumers to investigate and execute API client source code that demonstrates invoking one or more APIs as part of representative scenarios.
What is the most effective way to provide this type of code-centric API documentation environment using Anypoint Platform?

Enable mocking services for each of the relevant APIs and expose them via their Anypoint Exchange entry ✘ Ensure the APIs are well documented through their Anypoint Exchange entries and API Consoles and share these pages with all API consumers ✘ Create API Notebooks and include them in the relevant Anypoint Exchange entries ✘ Make relevant APIs discoverable via an Anypoint Exchange entry ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

10.

What is a best practice when building System APIs?

Document the API using an easily consumable asset like a RAML definition ✘ Model all API resources and methods to closely mimic the operations of the backend system ✘ Build an Enterprise Data Model (Canonical Data Model) for each backend system and apply it to System APIs ✘ Expose to API clients all technical details of the API implementation's interaction with the backend system ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

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