Final answer:
FIFO queues indeed maintain the exact order of messages as they are processed in the order they arrive, with the first message sent being the first received and processed.
Step-by-step explanation:
The statement that FIFO (first-in-first-out) queues preserve the exact order in which messages are sent and received is true. FIFO is a method of processing and retrieving data where the oldest entries are processed first. The term literally means that the first element added to the queue is the first one to be removed. This preserves the chronological order of messages or tasks, ensuring that they are handled in the exact sequence they were created. In computer science, this concept is crucial in data structures, networking, and multiprocessing systems where order matters for consistency and reliability.