QUESTION 2

(a) RPC uses transient communication, whereas Message Oriented Middleware uses persistent communication. Analyse this statement by explaining how Message Oriented Middleware works and comparing it to RPC.

(b) Explain why high-level message passing systems are preferred in Distributed Systems. What would happen if low-level communication was used instead?

(c) With the aid of a diagram, explain how Remote Procedure Calls are able to hide the explicit calls to send and receive via the use of Stubs.