Why is it difficult and dangerous to replace an existing system?

Systems Architecture
7th Edition
ISBN:9781305080195
Author:Stephen D. Burd
Publisher:Stephen D. Burd
Chapter8: Data And Network Communication Technology
Section: Chapter Questions
Problem 32VE: In __________ communication, signals are transmitted continuously, even when theres no data to send,...
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Why is it difficult and dangerous to replace an existing system?

 

 

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