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Exam MCIA - Level 1 topic 1 question 12 discussion

Actual exam question from Mulesoft's MCIA - Level 1

Question #: 12
Topic #: 1

An integration Mule application is deployed to a customer-hosted multi-node Mule 4 runtime cluster. The Mule application uses a Listener operation of a JMS connector to receive incoming messages from a JMS queue.
How are the messages consumed by the Mule application?

A. Regardless of the Listener operation configuration, all messages are consumed by ONLY the primary cluster node
B. Depending on the JMS provider's configuration, either all messages are consumed by ONLY the primary cluster node or else ALL messages are consumed by ALL cluster nodes
C. Regardless of the Listener operation configuration, all messages are consumed by ALL cluster nodes
D. Depending on the Listener operation configuration, either all messages are consumed by ONLY the primary cluster node or else EACH message is consumed by ANY ONE cluster node

Show Suggested Answer

Suggested Answer: D 🗳️

by Mulesoft at July 31, 2021, 6:22 p.m.

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gilofernandes

7 months, 1 week ago

Selected Answer: D

In a customer-hosted multi-node runtime cluster, a JMS listener can be configured to decide where the messages are consumed: primary node only or all nodes. D is the correct answer

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godricravenclaw

1 year, 4 months ago

Selected Answer: D

This is the expected behaviour to achieve load balancing. Can be set to isPrimaryNode = true as well.

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Viv2005

1 year, 6 months ago

Selected Answer: D

With listener-based connector (JMS, VM) traffic is distributed automatically or load balanced both in CloudHub and cluster. This means, even if primarynode=false the load distribution will be taken care of.

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sanni27

1 year, 7 months ago

should be D

upvoted 1 times

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majda091983

1 year, 7 months ago

Selected Answer: D

it is D

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mamor

1 year, 8 months ago

Selected Answer: D

D is the answer

upvoted 1 times

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madgeezer

1 year, 10 months ago

Selected Answer: D

D. Depending on the Listener operation configuration, either all messages are consumed by ONLY the primary cluster node or else EACH message is consumed by ANY ONE cluster node

upvoted 1 times

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[Removed]

1 year, 11 months ago

in connector configuration, we have the configuration name "make primary node" if we enable this then this worker is only responsible for processing all the messages to prevent duplicacy, if we didn't enable it then every worker is responsible to process the message Ans D

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rodriguescont

1 year, 11 months ago

Selected Answer: D

D The configurations primaryNodeOnly, shared-subscriptions, and topics may affect if only primary node or the other nodes will process receiving messages.

upvoted 1 times

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razz123098

2 years ago

Selected Answer: D

D is the answer

upvoted 1 times

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sanni27

2 years, 5 months ago

D, because its queue not topic so all the nodes cant consume, only one listener can consume.

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Grump

2 years, 5 months ago

D. I think.

upvoted 2 times

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Pavan_Nagineni

2 years, 9 months ago

D. Depending on the Listener operation configuration, either all messages are consumed by ONLY the primary cluster node or else EACH message is consumed by ANY ONE cluster node

upvoted 3 times

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Mulesoft

2 years, 10 months ago

D is correct - https://dzone.com/articles/deep-dive-into-jms-integration-patterns-with-mules

upvoted 3 times

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