In what STP state does a port drop all received user traffic and not transmit user traffic but still listen for updated BPDUs?
A) Dropping
B) Listening
C) Blocking
D) Learning
C
Explanation: C) The four main states of IEEE 802.1D STP are blocking, listening, learning, and forwarding. In the blocking state, an interface does nothing with user traffic, including dropping all received traffic; however, it does listen to management BPDU traffic for changes in network topology.
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