Answer:
The correct answer is controlled maintenance.
Step-by-step explanation:
It is the maintenance whose mission is to maintain a certain level of service in the equipment, programming the interventions of their vulnerable points at the most appropriate time. It usually has a systematic character, that is, it intervenes even if the team has not given any symptoms of having a problem.
Some data transmission networks mess up the messages they send, so if the messages are sent in a certain sequence, they are not guaranteed to arrive in that same sequence. To solve this, the protocol must incorporate a mechanism that allows it to reorder the messages at the destination. This mechanism can be the numbering of the fragments, for example.