6.1. When describing a system, explain why you may have to design the system architecture before the requirements specification is complete.6.4 Draw diagrams showing a conceptual view and a process view of the architectures of the following systems:An automated ticket-issuing system used by passengers at a railway station.A computer-controlled video conferencing system that allows video, audio, and computer data to be visible to several participants at the same time.A robot floor cleaner that is intended to clean relatively clear spaces such as corridors. The cleaner must be able to sense walls and other obstructions.7.2. Assume that the MHC-PMS is being developed using an object-oriented approach. Draw a use case diagram showing at least six possible use cases for this system.
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