Message queues are good for situations when a producer wants to connect to a certain consumer by both attaching to the same queue when producers are servers and consumers are clients in a client-server architecture when producers push their data to a broker and the broker pushes data to a group of subscribers when producers and consumer know from which queue they will write or read Which ones are true regarding descriptive models of distributed computing? Architectural model describes roles and responsibilities of participating entities Physical model specifies how the entities map to the physical infrastructure. Fundamental model abstracts away details and only have entities and the interaction among them Architectural model specifies failure models and security aspects in the form of some layered construct