InIn a retail catalog operation, six telephone operators are employed to process orders using computer terminals. When a terminal breaks down, it needs to be disconnected and taken to a nearby electronic service department. Here is the elaborated explanation:In a retail catalog operation, a bank of six telephone operators are hired to process orders. These operators use computer terminals to complete the orders. When a terminal becomes faulty or breaks down, it must be disconnected and taken to a nearby electronic service department. In the meantime, one of the six telephone operators must complete the order using another terminal in the absence of the one that has broken down.The idea is that, if one of the six terminals is broken, the order processing must continue uninterrupted. Therefore, one of the operators must use a different terminal until the faulty one is fixed and available for use again.