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NEW QUESTION # 53
Select the correct Owner-Layer combinations from below options
- A. 1. App Developers owns and focuses on Experience Layer APIs
2. Central IT owns and focuses on Process Layer APIs
3. LOB IT owns and focuses on System Layer APIs - B. 1. App Developers owns and focuses on Experience Layer APIs
2. LOB IT owns and focuses on Process Layer APIs
3. Central IT owns and focuses on System Layer APIs - C. 1. Central IT owns and focuses on Experience Layer APIs
2. LOB IT owns and focuses on Process Layer APIs
3. App Developers owns and focuses on System Layer APIs
Answer: B
Explanation:
1. App Developers owns and focuses on Experience Layer APIs
2. LOB IT owns and focuses on Process Layer APIs
3. Central IT owns and focuses on System Layer APIs
References:
https://blogs.mulesoft.com/biz/api/experience-api-ownership/
https://blogs.mulesoft.com/biz/api/process-api-ownership/
https://blogs.mulesoft.com/biz/api/system-api-ownership/
NEW QUESTION # 54
Version 3.0.1 of a REST API implementation represents time values in PST time using ISO 8601 hh:mm:ss format. The API implementation needs to be changed to instead represent time values in CEST time using ISO
8601 hh:mm:ss format. When following the semver.org semantic versioning specification, what version should be assigned to the updated API implementation?
- A. 3.1.0
- B. 3.0.2
- C. 3.0.1
- D. 4.0.0
Answer: D
Explanation:
4.0.0
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As per semver.org semantic versioning specification:
Given a version number MAJOR.MINOR.PATCH, increment the:
- MAJOR version when you make incompatible API changes.
- MINOR version when you add functionality in a backwards compatible manner.
- PATCH version when you make backwards compatible bug fixes.
As per the scenario given in the question, the API implementation is completely changing its behavior.
Although the format of the time is still being maintained as hh:mm:ss and there is nochange in schema w.r.t format, the API will start functioning different after this change as the times are going to come completely different.
Example: Before the change, say, time is going as 09:00:00 representing the PST. Now on, after the change, the same time will go as 18:00:00 as Central European Summer Time is 9 hours ahead of Pacific Time.
>> This may lead to some uncertain behavior on API clients depending on how they are handling the times in the API response. All the API clients need to be informed that the API functionality is going to change and will return in CEST format. So, this considered as a MAJOR change and the version of API for this new change would be 4.0.0
NEW QUESTION # 55
What API policy would LEAST likely be applied to a Process API?
- A. JSON threat protection
- B. Client ID enforcement
- C. Rate limiting
- D. Custom circuit breaker
Answer: D
NEW QUESTION # 56
Refer to the exhibit.
What is a valid API in the sense of API-led connectivity and application networks?
A) Java RMI over TCP
B) Java RMI over TCP
C) CORBA over HOP
D) XML over UDP
- A. Option B
- B. Option D
- C. Option C
- D. Option A
Answer: B
Explanation:
XML over HTTP
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>> API-led connectivity and Application Networks urge to have the APIs on HTTP based protocols for building most effective APIs and networks on top of them.
>> The HTTP based APIs allow the platform to apply various varities of policies to address many NFRs
>> The HTTP based APIs also allow to implement many standard and effective implementation patterns that adhere to HTTP based w3c rules.
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NEW QUESTION # 57
The implementation of a Process API must change.
What is a valid approach that minimizes the impact of this change on API clients?
- A. Update the RAML definition of the current Process API and notify API client developers by sending them links to the updated RAML definition
- B. Postpone changes until API consumers acknowledge they are ready to migrate to a new Process API or API version
- C. Implement the Process API changes in a new API implementation, and have the old API implementation return an HTTP status code 301 - Moved Permanently to inform API clients they should be calling the new API implementation
- D. Implement required changes to the Process API implementation so that whenever possible, the Process API's RAML definition remains unchanged
Answer: C
NEW QUESTION # 58
Refer to the exhibit. An organization needs to enable access to their customer data from both a mobile app and a web application, which each need access to common fields as well as certain unique fields.
The data is available partially in a database and partially in a 3rd-party CRM system.
What APIs should be created to best fit these design requirements?
A) A Process API that contains the data required by both the web and mobile apps, allowing these applications to invoke it directly and access the data they need thereby providing the flexibility to add more fields in the future without needing API changes
B) One set of APIs (Experience API, Process API, and System API) for the web app, and another set for the mobile app
C) Separate Experience APIs for the mobile and web app, but a common Process API that invokes separate System APIs created for the database and CRM system
D) A common Experience API used by both the web and mobile apps, but separate Process APIs for the web and mobile apps that interact with the database and the CRM System
- A. Option B
- B. Option D
- C. Option C
- D. Option A
Answer: C
Explanation:
Correct answer: Separate Experience APIs for the mobile and web app, but a common Process API that invokes separate System APIs created for the database and CRM system
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As per MuleSoft's API-led connectivity:
>> Experience APIs should be built as per each consumer needs and their experience.
>> Process APIs should contain all the orchestration logic to achieve the business functionality.
>> System APIs should be built for each backend system to unlock their data.
Reference:
NEW QUESTION # 59
An API has been updated in Anypoint exchange by its API producer from version 3.1.1 to 3.2.0 following accepted semantic versioning practices and the changes have been communicated via the APIs public portal. The API endpoint does NOT change in the new version. How should the developer of an API client respond to this change?
- A. The API producer should be contacted to understand the change to existing functionality
- B. The API producer should be requested to run the old version in parallel with the new one
- C. The API clients need to update the code on their side and need to do full regression
- D. The API client code only needs to be changed if it needs to take advantage of the new features
Answer: D
NEW QUESTION # 60
An organization makes a strategic decision to move towards an IT operating model that emphasizes consumption of reusable IT assets using modern APIs (as defined by MuleSoft).
What best describes each modern API in relation to this new IT operating model?
- A. Each modem API must be treated like a product and designed for a particular target audience (for instance, mobile app developers)
- B. Each modern API must be easy to consume, so should avoid complex authentication mechanisms such as SAML or JWT D
- C. Each modern API must be REST and HTTP based
- D. Each modern API has its own software development lifecycle, which reduces the need for documentation and automation
Answer: A
Explanation:
Correct Answers:
1. Each modern API must be treated like a product and designed for a particular target audience (for instance mobile app developers)
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NEW QUESTION # 61
An organization is implementing a Quote of the Day API that caches today's quote.
What scenario can use the CloudHub Object Store via the Object Store connector to persist the cache's state?
- A. When there are three CloudHub deployments of the API implementation to three separate CloudHub regions that must share the cache state.
- B. When there are two CloudHub deployments of the API implementation by two Anypoint Platform business groups to the same CloudHub region that must share the cache state.
- C. When there is one CloudHub deployment of the API implementation to three CloudHub workers that must share the cache state.
- D. When there is one deployment of the API implementation to CloudHub and another deployment to a customer-hosted Mule runtime that must share the cache state.
Answer: D
NEW QUESTION # 62
An Order API must be designed that contains significant amounts of integration logic and involves the invocation of the Product API.
The power relationship between Order API and Product API is one of "Customer/Supplier", because the Product API is used heavily throughout the organization and is developed by a dedicated development team located in the office of the CTO.
What strategy should be used to deal with the API data model of the Product API within the Order API?
- A. Implement an anti-corruption layer in the Order API that transforms the Product API data model into internal data types of the Order API
- B. Convince the development team of the Product API to adopt the API data model of the Order API such that the integration logic of the Order API can work with one consistent internal data model
- C. Start an organization-wide data modeling initiative that will result in an Enterprise Data Model that will then be used in both the Product API and the Order API
- D. Work with the API data types of the Product API directly when implementing the integration logic of the Order API such that the Order API uses the same (unchanged) data types as the Product API
Answer: A
NEW QUESTION # 63
What is true about where an API policy is defined in Anypoint Platform and how it is then applied to API instances?
- A. The API policy Is defined In API Manager for a specific API Instance, and then ONLY applied to the specific API instance
- B. The API policy is defined in API Manager, and then applied to ALL API instances in the specified environment
- C. The API policy Is defined in API Manager and then automatically applied to ALL API instances
- D. The API policy Is defined In Runtime Manager as part of the API deployment to a Mule runtime, and then ONLY applied to the specific API Instance
Answer: D
NEW QUESTION # 64
An API client calls one method from an existing API implementation. The API implementation is later updated. What change to the API implementation would require the API client's invocation logic to also be updated?
- A. When a new method is added to the resource used by the API client
- B. When a new required field is added to the method called by the API client
- C. When the data type of the response is changed for the method called by the API client
- D. When a child method is added to the method called by the API client
Answer: B
Explanation:
When a new required field is added to the method called by the API client
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>> Generally, the logic on API clients need to be updated when the API contract breaks.
>> When a new method or a child method is added to an API , the API client does not break as it can still continue to use its existing method. So these two options are out.
>> We are left for two more where "datatype of the response if changed" and "a new required field is added".
>> Changing the datatype of the response does break the API contract. However, the question is insisting on the "invocation" logic and not about the response handling logic. The API client can still invoke the API successfully and receive the response but the response will have a different datatype for some field.
>> Adding a new required field will break the API's invocation contract. When adding a new required field, the API contract breaks the RAML or API spec agreement that the API client/API consumer and API provider has between them. So this requires the API client invocation logic to also be updated.
NEW QUESTION # 65
When can CloudHub Object Store v2 be used?
- A. To store key-value pairs with keys up to 300 characters
- B. To store information in Mule 4 Object Store v1
- C. To store payloads with an average size greater than 15MB
- D. To store an unlimited number of key-value pairs
Answer: A
Explanation:
CloudHub Object Store v2 is a managed key-value store provided by MuleSoft to support various use cases where temporary data storage is required. Here's why Option D is correct:
* Key Length Support: Object Store v2 allows storage of keys with a length of up to 300 characters, making it suitable for applications needing flexible and descriptive keys.
* Limitations on Size:
* Object Store v2 is not intended for large payload storage and has a recommended size limit below
10 MB for each value. Payloads exceeding 15 MB may cause performance issues and are better suited to a file storage system or database.
* Option B is incorrect because storing payloads above 15 MB exceeds Object Store's optimal usage specifications.
* Key-Value Limits: Object Store v2 is designed for moderate, transient storage needs, and does not support unlimited storage. Thus, Option A is incorrect.
* Backward Compatibility: Object Store v2 does not support Mule 4 applications running Object Store v1. Option C is incorrect as Object Store v1 and v2 are distinct.
ReferencesFor more on CloudHub Object Store v2, refer to MuleSoft documentation on Object Store limitations and configuration.
NEW QUESTION # 66
A European company has customers all across Europe, and the IT department is migrating from an older platform to MuleSoft. The main requirements are that the new platform should allow redeployments with zero downtime and deployment of applications to multiple runtime versions, provide security and speed, and utilize Anypoint MQ as the message service.
Which runtime plane should the company select based on the requirements without additional network configuration?
- A. Runtime Fabric on VMs / Bare Metal for the runtime plane
- B. Anypoint Runtime Fabric on Self-Managed Kubernetes for the runtime plane
- C. Customer-hosted runtime plane
- D. MuleSoft-hosted runtime plane (CloudHub)
Answer: D
Explanation:
For a European company with requirements such as zero-downtime redeployment, deployment to multiple runtime versions, secure and fast performance, and the use of Anypoint MQ without additional network configuration, CloudHub is the best choice for the following reasons:
* Zero-Downtime Redeployment: CloudHub supports zero-downtime deployment, which allows seamless redeployment of applications without impacting availability.
* Support for Multiple Runtime Versions: CloudHub allows deploying applications across different Mule runtime versions, giving flexibility to test and migrate applications as needed.
* Integrated Anypoint MQ: Anypoint MQ, which is fully integrated with CloudHub, provides reliable messaging across applications. Choosing CloudHub removes the need for additional network configurations, as Anypoint MQ can be directly accessed in this hosted environment.
* Security and Performance: CloudHub offers secure networking, automatic scaling, and optimized performance without requiring a complex setup. This is managed by MuleSoft's infrastructure, meeting the speed and security requirements with minimal overhead.
* Explanation of Incorrect Options:
* Option A and D (Runtime Fabric on VMs or Self-Managed Kubernetes): While Runtime Fabric offers flexibility, it requires more complex network and infrastructure configurations, which is not ideal if the company seeks simplicity.
* Option B (Customer-hosted): This would require additional network and security configuration, which does not align with the requirement of minimizing setup complexity.
ReferencesFor more information on CloudHub's capabilities regarding zero-downtime deployments and integration with Anypoint MQ, refer to MuleSoft documentation on CloudHub.
NEW QUESTION # 67
An IT Security Compliance Auditor is assessing which nonfunctional requirements (NFRs) are already being implemented to meet security measures.
* The Web API has Rate-Limiting SLA
* Basic Authentication - LDAP
* JSON Threat Protection
* TP Allowlist policies applied
Which two NFRs-are enforced?
- A. The API is protected against XML invocation attacks
- B. Username/password supported to validate login credentials
- C. Sensitive data is masked to prevent compromising critical information
- D. The API invocations are coming from a known subnet range
- E. Performance expectations are to be allowed up to 1,000 requests per second
Answer: B,D
Explanation:
* Understanding Nonfunctional Requirements (NFRs):
* The NFRs in this context are related to security measures implemented for the Web API, such as rate limiting, LDAP-based authentication, JSON threat protection, and IP allowlist policies.
* Evaluating the Options:
* Option A (Correct Answer): The IP allowlist policy restricts access to known subnets, ensuring that API invocations come from a defined range of IPs.
* Option B (Correct Answer): Basic Authentication with LDAP enforces a username/password validation, satisfying an NFR for identity verification.
* Option C: Masking sensitive data is not part of the listed NFRs, as none of the mentioned policies address data masking.
* Option D: XML threat protection is not mentioned, so this option is incorrect.
* Option E: While rate-limiting implies performance control, it does not directly enforce a specific performance expectation.
* Conclusion:
* Options A and B are correct as they directly address the implemented security measures related to IP range restrictions and username/password authentication.
Refer to MuleSoft's documentation on API security policies for details on LDAP, rate limiting, and allowlist policies.
NEW QUESTION # 68
When designing an upstream API and its implementation, the development team has been advised to NOT set timeouts when invoking a downstream API, because that downstream API has no SLA that can be relied upon.
This is the only downstream API dependency of that upstream API.
- A. Assume the downstream API runs uninterrupted without crashing. What is the impact of this advice?
- B. The invocation of the downstream API will run to completion without timing out
- C. An SLA for the upstream API CANNOT be provided
- D. A toad-dependent timeout of less than 1000 ms will be applied by the Mule runtime in which the downstream API implementation executes
- E. A default timeout of 500 ms will automatically be applied by the Mule runtime in which the upstream API implementation executes
Answer: E
NEW QUESTION # 69
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