Discussion
IEEE 802.5 (the IBM token ring), is operating at .............. and ........... Mbps.
Answer: B
IEEE 802.5 token ring operates at 4 and 16 Mbps.
The token ring standard, based on IBM's design, was specified at 4 Mbps and later at 16 Mbps. Stations pass a token around the ring, and only the holder may transmit.
2, 32 and 64 Mbps are not the standard 802.5 rates (later high-speed token ring at 100 Mbps saw little use), so the other pairs are wrong.
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