The figure below shows a three-stage space-division switch with N =400, n=10 and 8 cross bars at the middle stage. Carefully analyze this multistage network and answer the following questions: Centen Emtan N-400 1 10N-400 1. What is the size of each switch in stage 1? 2. What is the size of each switch in stage 2? 3. What is the size of each switch in stage 3? 4. What is the number of crossbar in stage 1? 5. What is the number of crossbar in stage 3? 6. What is the total number of croospoint? 7. What is the possible number of simultaneous connections? 000