Correct answer is Perform all communication involving service S synchronously from within the For

Each scope, so objects in RESP are in the exact same order as request objects in REQU : Using

Anypoint MQ, you can create two types of queues: Standard queue These queues don’t guarantee a

specific message order. Standard queues are the best fit for applications in which messages must be

delivered quickly. FIFO (first in, first out) queue These queues ensure that your messages arrive in

order. FIFO queues are the best fit for applications requiring strict message ordering and exactly-once

delivery, but in which message delivery speed is of less importance Use of FIFO queue is no where in

the option and also it decreased throughput. Similarly persistent object store is not the preferred

solution approach when you maximizing message throughput. This rules out one of the options.

Scatter Gather does not support ObjectStore. This rules out one of the options. Standard Anypoint

MQ queues don’t guarantee a specific message order hence using another for each block to collect

response wont work as requirement here is to ensure the order. Hence considering all the above

factors the feasible approach is Perform all communication involving service S synchronously from

within the For Each scope, so objects in RESP are in the exact same order as request objects in REQU