150 words and 2 drawings

question 1. When describing a system, explain why you may have to design thesystem architecture before the requirements specification iscomplete.= 150 WORDS
question 2. Draw diagrams showing a conceptual view and a process view of thearchitectures 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 thesame time.A robot floor cleaner that is intended to clean relatively clearspaces such as corridors. The cleaner must be able to sense walls andother obstructions.
question 3. Assume that the Mental care system is being developed using anobject-oriented approach. Draw a use case diagram showing at least sixpossible use cases for this system.
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APA formatted



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