Mulesoft MCIA-LEVEL1 Online Practice Questions and Exam Preparation

Mulesoft MCIA-LEVEL1 Online Questions & Answers

• Question 21:

  A mule application is deployed to a Single Cloudhub worker and the public URL appears in Runtime Manager as the APP URL.

  Requests are sent by external web clients over the public internet to the mule application App url. Each of these requests routed to the HTTPS Listener event source of the running Mule application.

  Later, the DevOps team edits some properties of this running Mule application in Runtime Manager.

  Immediately after the new property values are applied in runtime manager, how is the current Mule application deployment affected and how will future web client requests to the Mule application be handled?

  A. Cloudhub will redeploy the Mule application to the OLD Cloudhub worker New web client requests will RETURN AN ERROR until the Mule application is redeployed to the OLD Cloudhub worker
  B. CloudHub will redeploy the Mule application to a NEW Cloudhub worker New web client requests will RETURN AN ERROR until the NEW Cloudhub worker is available
  C. Cloudhub will redeploy the Mule application to a NEW Cloudhub worker New web client requests are ROUTED to the OLD Cloudhub worker until the NEW Cloudhub worker is available.
  D. Cloudhub will redeploy the mule application to the OLD Cloudhub worker New web client requests are ROUTED to the OLD Cloudhub worker BOTH before and after the Mule application is redeployed.
  C. Cloudhub will redeploy the Mule application to a NEW Cloudhub worker New web client requests are ROUTED to the OLD Cloudhub worker until the NEW Cloudhub worker is available.

  ---

  CloudHub supports updating your applications at runtime so end users of your HTTP APIs experience zero downtime. While your application update is deploying, CloudHub keeps the old version of your application running. Your domain points to the old version of your application until the newly uploaded version is fully started. This allows you to keep servicing requests from your old application while the new version of your application is starting.

• Question 22:

  A customer wants to use the mapped diagnostic context (MDC) and logging variables to enrich its logging and improve tracking by providing more context in the logs.

  The customer also wants to improve the throughput and lower the latency of message processing.

  As an Mulesoft integration architect can you advise, what should the customer implement to meet these requirements?

  A. Use synchronous logging and use pattern layout with [%MDC] in the log4j2.xml configuration file and then configure the logging variables
  B. Useasync logger at the level greater than INFO and use pattern layout with [%MDC] in the log4j2,xml configuration file and then configure the logging variables
  C. Useasync logger at the level equal to DEBUG orTRACEand use pattern layout with [%MDC] in the log4j2.xml configuration file and then configure the logging variables
  D. Use synchronous logging at the INFO DEBUG or Trace level and use pattern layout with [%MDC] in the log4j2.xml configuration file and then configure the logging variables
  B. Useasync logger at the level greater than INFO and use pattern layout with [%MDC] in the log4j2,xml configuration file and then configure the logging variables

• Question 23:

  An IT integration tram followed an API-led connectivity approach to implement an order- fulfillment business process. It created an order processing AP that coordinates stateful interactions with a variety of microservices that validate, create, and fulfill new product orders

  Which interaction composition pattern did the integration architect who designed this order processing AP| use?

  A. Orchestration
  B. Streaming
  C. Aggregation
  D. Multicasting
  A. Orchestration

• Question 24:

  An ABC Farms project team is planning to build a new API that is required to work with data from different domains across the organization.

  The organization has a policy that all project teams should leverage existing investments by reusing existing APIs and related resources and documentation that other project teams have already developed and deployed.

  To support reuse, where on Anypoint Platform should the project team go to discover and read existing APIs, discover related resources and documentation, and interact with mocked versions of those APIs?

  A. Design Center
  B. API Manager
  C. Runtime Manager
  D. Anypoint Exchange
  D. Anypoint Exchange

  ---

  The mocking service is a feature of Anypoint Platform and runs continuously. You can run the mocking service from the text editor, the visual editor, and from Anypoint Exchange. You can simulate calls to the API in API Designer before publishing the API specification to Exchange or in Exchange after publishing the API specification.

  https://docs.mulesoft.com/design-center/design-mocking-service

• Question 25:

  A global, high-volume shopping Mule application is being built and will be deployed to CloudHub. To improve performance, the Mule application uses a Cache scope that maintains cache state in a CloudHub object store. Web clients will access the Mule application over HTTP from all around the world, with peak volume coinciding with business hours in the web client's geographic location. To achieve optimal performance, what Anypoint Platform region should be chosen for the CloudHub object store?

  A. Choose the same region as to where the Mule application is deployed
  B. Choose the US-West region, the only supported region for CloudHub object stores
  C. Choose the geographically closest available region for each web client
  D. Choose a region that is the traffic-weighted geographic center of all web clients
  A. Choose the same region as to where the Mule application is deployed

  ---

  CloudHub object store should be in same region where the Mule application is deployed.

  This will give optimal performance.

  Before learning about Cache scope and object store in Mule 4 we understand what is in general Caching is and other related things.

  WHAT DOES "CACHING" MEAN?

  Caching is the process of storing frequently used data in memory, file system or database which saves processing time and load if it would have to be accessed from original source location every time.

  In computing, a cache is a high-speed data storage layer which stores a subset of data, so that future requests for that data are served up faster than is possible by accessing the data's primary storage location. Caching allows you to efficiently reuse previously retrieved or computed data.

  How does Caching work?

  The data in a cache is generally stored in fast access hardware such as RAM (Random- access memory) and may also be used in correlation with a software component. A cache's primary purpose is to increase data retrieval performance by reducing the need to access the underlying slower storage layer.

  Caching in MULE 4

  In Mule 4 caching can be achieved in mule using cache scope and/or object-store. Cache scope internally uses Object Store to store the data.

  What is Object Store

  Object Store lets applications store data and states across batch processes, Mule components, and applications, from within an application. If used on cloud hub, the object store is shared between applications deployed on Cluster.

  Cache Scope is used in below-mentioned cases:

  Need to store the whole response from the outbound processor Data returned from the outbound processor does not change very frequently As Cache scope internally handle the cache hit and cache miss scenarios it is more readable

  Object Store is used in below-mentioned cases:

  Need to store custom/intermediary data

  To store watermarks

  Sharing the data/stage across applications, schedulers, batch. If CloudHub object store is in same region where the Mule application is deployed it will aid in fast access of data and give optimal performance.

• Question 26:

  A Mule application is deployed to a cluster of two(2) cusomter-hosted Mule runtimes. Currently the node name Alice is the primary node and node named bob is the secondary node. The mule application has a flow that polls a directory on a file system for new files.

  The primary node Alice fails for an hour and then restarted.

  After the Alice node completely restarts, from what node are the files polled, and what node is now the primary node for the cluster?

  A. Files are polled from Alice node Alice is now the primary node
  B. Files are polled form Bob node Alice is now the primary node
  C. Files are polled from Alice node Bob is the now the primary node
  D. Files are polled form Bob node Bob is now the primary node
  D. Files are polled form Bob node Bob is now the primary node

  ---

  # Mule High Availability Clustering provides basic failover capability for Mule. # When the primary Mule Runtime becomes unavailable, for example, because of a fatal JVM or hardware failure or it's taken offline for maintenance, a backup Mule Runtime immediately becomes the primary node and resumes processing where the failed instance left off. # After a system administrator recovers a failed Mule Runtime server and puts it back online, that server automatically becomes the backup node. In this case, Alice, once up, will become backup --------------------------------------------------------------------------------------------------- -------------------------------------------

  https://docs.mulesoft.com/mule-runtime/4.3/hadr-guide So correct choice is : Files are polled form Bob node Bob is now the primary node

• Question 27:

  An XA transaction Is being configured that involves a JMS connector listening for Incoming JMS messages. What is the meaning of the timeout attribute of the XA transaction, and what happens after the timeout expires?

  A. The time that is allowed to pass between committing the transaction and the completion of the Mule flow After the timeout, flow processing triggers an error
  B. The time that Is allowed to pass between receiving JMS messages on the same JMS connection After the timeout, a new JMS connection Is established
  C. The time that Is allowed to pass without the transaction being ended explicitly After the timeout, the transaction Is forcefully rolled-back
  D. The time that Is allowed to pass for state JMS consumer threads to be destroyed After the timeout, a new JMS consumer thread is created
  C. The time that Is allowed to pass without the transaction being ended explicitly After the timeout, the transaction Is forcefully rolled-back

  ---

  # Setting a transaction timeout for the Bitronix transaction manager Set the transaction timeout either

  In wrapper.conf

  In CloudHub in the Properties tab of the Mule application deployment The default is 60 secs. It is defined as

  mule.bitronix.transactiontimeout = 120

  # This property defines the timeout for each transaction created for this manager. If the transaction has not terminated before the timeout expires it will be automatically rolled back.

  Additional Info around Transaction Management:

  Bitronix is available as the XA transaction manager for Mule applications To use Bitronix, declare it as a global configuration element in the Mule application

  Each Mule runtime can have only one instance of a Bitronix transaction manager, which is shared by all Mule applications

  For customer-hosted deployments, define the XA transaction manager in a Mule domain ?Then share this global element among all Mule applications in the Mule runtime

  

• Question 28:

  An organization uses a set of customer-hosted Mule runtimes that are managed using the Mulesoft-hosted control plane. What is a condition that can be alerted on from Anypoint Runtime Manager without any custom components or custom coding?

  A. When a Mule runtime on a given customer-hosted server is experiencing high memory consumption during certain periods
  B. When an SSL certificate used by one of the deployed Mule applications is about to expire
  C. When the Mute runtime license installed on a Mule runtime is about to expire
  D. When a Mule runtime's customer-hosted server is about to run out of disk space
  A. When a Mule runtime on a given customer-hosted server is experiencing high memory consumption during certain periods

  ---

  Correct answer is When a Mule runtime on a given customer-hosted server is experiencing high memory consumption during certain periods Using Anypoint Monitoring, you can configure two different types of alerts: Basic alerts for servers and Mule apps Limit per organization: Up to 50 basic alerts for users who do not have a Titanium subscription to Anypoint Platform You can set up basic alerts to trigger email notifications when a metric you are measuring passes a specified threshold. You can create basic alerts for the following metrics for servers or Mule apps: For on-premises servers and CloudHub apps: # CPU utilization # Memory utilization # Thread count Advanced alerts for graphs in custom dashboards in Anypoint Monitoring. You must have a Titanium subscription to use this feature. Limit per organization: Up to 20 advanced alerts

• Question 29:

  An organization will deploy Mule applications to Cloudhub, Business requirements mandate that all application logs be stored ONLY in an external splunk consolidated logging service and NOT in Cloudhub. In order to most easily store Mule application logs ONLY in Splunk, how must Mule application logging be configured in Runtime Manager, and where should the log4j2 splunk appender be defined?

  A. Keep the default logging configuration in RuntimeManager Define the splunk appender in ONE global log4j.xml file that is uploaded once to Runtime Manager to support at Mule application deployments.
  B. Disable Cloudhub logging in Runtime Manager Define the splunk appender in EACH Mule application's log4j2.xml file
  C. Disable Cloudhub logging in Runtime Manager Define the splunk appender in ONE global log4j.xml file that is uploaded once to Runtime Manger to support at Mule application deployments.
  D. Keep the default logging configuration in Runtime Manager Define the Splunk appender in EACH Mule application log4j2.xml file
  B. Disable Cloudhub logging in Runtime Manager Define the splunk appender in EACH Mule application's log4j2.xml file

  ---

  By default, CloudHub replaces a Mule application's log4j2.xml file with a CloudHub log4j2.xml file. In CloudHub, you can disable the CloudHub provided Mule application log4j2 file. This allows integrating Mule application logs with custom or third-party log management systems

• Question 30:

  Which productivity advantage does Anypoint Platform have to both implement and manage an AP?

  A. Automatic API proxy generation
  B. Automatic API specification generation
  C. Automatic API semantic versioning
  D. Automatic API governance
  D. Automatic API governance