What is a typical result of using a fine-grained rather than a coarse-grained API deployment model to implement a given business process?
A.
A decrease in the number of connections within the application network supporting the business process
B.
A higher number of discoverable API-related assets in the application network
C.
A better response time for the end user as a result of the APIs being smaller in scope and complexity
D.
An overall tower usage of resources because each fine-grained API consumes less resources
A higher number of discoverable API-related assets in the application network
Explanation: Explanation
Correct Answer: A higher number of discoverable API-related assets in the application
network.
*****************************************
>> We do NOT get faster response times in fine-grained approach when compared to
coarse-grained approach.
>> In fact, we get faster response times from a network having coarse-grained APIs
compared to a network having fine-grained APIs model. The reasons are below.
Fine-grained approach:
1. will have more APIs compared to coarse-grained
2. So, more orchestration needs to be done to achieve a functionality in business process.
3. Which means, lots of API calls to be made. So, more connections will needs to be
established. So, obviously more hops, more network i/o, more number of integration points
compared to coarse-grained approach where fewer APIs with bulk functionality embedded
in them.
4. That is why, because of all these extra hops and added latencies, fine-grained approach
will have bit more response times compared to coarse-grained.
5. Not only added latencies and connections, there will be more resources used up in finegrained
approach due to more number of APIs.
That's why, fine-grained APIs are good in a way to expose more number of resuable assets
in your network and make them discoverable. However, needs more maintenance, taking
care of integration points, connections, resources with a little compromise w.r.t network
hops and response times.
A company deployed an API to a single worker/replica in the shared cloud in the U.S. West Region. What happens when the Availability Zone experiences an outage?
A. CloudHub will auto-redeploy the APL in the U.S. East Region
B. The APT will be unavailable until the availability comes back online, at which time the worker/replica will be auto-restarted
C. CloudHub will auto-redeploy the API in another Availability Zone in the U.S. West Region
D. The Anypoint Platform admin is alerted when the AP] is experiencing an outage and needs the trigger the CI/CD pipeline to redeploy to the US. East Region
Explanation:
In a CloudHub deployment with a single worker/replica located in a specific
Availability Zone (AZ), if an AZ experiences an outage, here’s what happens:
Worker Availability: Since the application is deployed in a single AZ, CloudHub
does not automatically redeploy the application in a different zone or region during
an outage. Thus, if the current AZ is unavailable, the application will be offline.
Auto-Restart upon AZ Recovery: Once the affected AZ is back online, CloudHub
will auto-restart the worker in the same AZ without manual intervention. This ensures that as soon as the AZ is functional, the application resumes
automatically.
An operations team is analyzing the effort needed to set up monitoring of their application network. They are looking at which API invocation metrics can be used to identify and predict trouble without having to write custom scripts or install additional analytics software or tools. Which type of metrics can satisfy this goal of directly identifying and predicting failures?
A. The number and types of API policy violations per day
B. The effectiveness of the application network based on the level of reuse
C. The number and types of past API invocations across the application network
D. The ROI from each APT invocation
Explanation:
To monitor an application network and predict issues without custom scripts,
policy violation metrics are critical. They provide insights into potential problems by
tracking instances where API usage does not conform to defined policies. Here’s why this
approach is suitable:
A company is building an application network using MuleSoft's recommendations for various API layers. What is the main (default) role of a process API in an application network?
A. To secure and optimize the data synchronization processing of large data dumps between back-end systems
B. To manage and process the secure direct communication between a back-end system and an end-user client of mobile device in the application network
C. To automate parts of business processes by coordinating and orchestrating the invocation of other APIs in the application network
D. To secure, Manage, and process communication with specific types of end-user client applications or devices in the application network
Explanation:
What is typically NOT a function of the APIs created within the framework called API-led connectivity?
A.
They provide an additional layer of resilience on top of the underlying backend system,
thereby insulating clients from extended failure of these systems.
B.
They allow for innovation at the user Interface level by consuming the underlying assets
without being aware of how data Is being extracted from backend systems.
C.
They reduce the dependency on the underlying backend systems by helping unlock data
from backend systems In a reusable and consumable way.
D.
They can compose data from various sources and combine them with orchestration logic to create higher level value.
They provide an additional layer of resilience on top of the underlying backend system,
thereby insulating clients from extended failure of these systems.
Explanation: Explanation
Correct Answer: They provide an additional layer of resilience on top of the underlying
backend system, thereby insulating clients from extended failure of these systems.
*****************************************
In API-led connectivity,
>> Experience APIs - allow for innovation at the user interface level by consuming the
underlying assets without being aware of how data is being extracted from backend
systems.
>> Process APIs - compose data from various sources and combine them with
orchestration logic to create higher level value
>> System APIs - reduce the dependency on the underlying backend systems by helping
unlock data from backend systems in a reusable and consumable way.
However, they NEVER promise that they provide an additional layer of resilience on top of
the underlying backend system, thereby insulating clients from extended failure of these
systems.
https://dzone.com/articles/api-led-connectivity-with-mule
In which layer of API-led connectivity, does the business logic orchestration reside?
A.
System Layer
B.
Experience Layer
C.
Process Layer
Process Layer
Explanation: Explanation
Correct Answer: Process Layer
*****************************************
>> Experience layer is dedicated for enrichment of end user experience. This layer is to
meet the needs of different API clients/ consumers.
>> System layer is dedicated to APIs which are modular in nature and implement/ expose
various individual functionalities of backend systems
>> Process layer is the place where simple or complex business orchestration logic is
written by invoking one or many System layer modular APIs
So, Process Layer is the right answer.
Refer to the exhibit.
what is true when using customer-hosted Mule runtimes with the MuleSoft-hosted Anypoint Platform control plane (hybrid deployment)?
A.
Anypoint Runtime Manager initiates a network connection to a Mule runtime in order to deploy Mule applications
B.
The MuleSoft-hosted Shared Load Balancer can be used to load balance API
invocations to the Mule runtimes
C.
API implementations can run successfully in customer-hosted Mule runtimes, even when they are unable to communicate with the control plane
D.
Anypoint Runtime Manager automatically ensures HA in the control plane by creating a new Mule runtime instance in case of a node failure
API implementations can run successfully in customer-hosted Mule runtimes, even when they are unable to communicate with the control plane
Explanation: Explanation
Correct Answer: API implementations can run successfully in customer-hosted Mule
runtimes, even when they are unable to communicate with the control plane.
*****************************************
>> We CANNOT use Shared Load balancer to load balance APIs on customer hosted
runtimes
What is the main change to the IT operating model that MuleSoft recommends to
organizations to improve innovation and clock speed?
A.
Drive consumption as much as production of assets; this enables developers to discover
and reuse assets from other projects and encourages standardization
B.
Expose assets using a Master Data Management (MDM) system; this standardizes
projects and enables developers to quickly discover and reuse assets from other projects
C.
Implement SOA for reusable APIs to focus on production over consumption; this
standardizes on XML and WSDL formats to speed up decision making
D.
Create a lean and agile organization that makes many small decisions everyday; this
speeds up decision making and enables each line of business to take ownership of its
projects
Drive consumption as much as production of assets; this enables developers to discover
and reuse assets from other projects and encourages standardization
Explanation: Explanation
Correct Answer: Drive consumption as much as production of assets; this enables
developers to discover and reuse assets from other projects and encourages
standardization
*****************************************
>> The main motto of the new IT Operating Model that MuleSoft recommends and made
popular is to change the way that they are delivered from a production model to a
production + consumption model, which is done through an API strategy called API-led
connectivity.
>> The assets built should also be discoverable and self-serveable for reusablity across
LOBs and organization.
>> MuleSoft's IT operating model does not talk about SDLC model (Agile/ Lean etc) or
MDM at all. So, options suggesting these are not valid.
References:
https://blogs.mulesoft.com/biz/connectivity/what-is-a-center-for-enablement-c4e/
https://www.mulesoft.com/resources/api/secret-to-managing-it-projects
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