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1. Whats the most significant block to high transmission efficiency in packet networks? A. switching B. packetization C. routing D. congestion 2. In a circuit-switched
1. Whats the most significant block to high transmission efficiency in packet networks?
A. switching
B. packetization
C. routing
D. congestion
2. In a circuit-switched Private Branch Exchange (PBX), what component allows it to communicate to Central Office (CO) switches?
A. trunk cards
B. line cards
C. administrative terminal
D. none of the above
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