If a Cisco Gigabit Ethernet port is connected to a device that does not support IEEE autonegotiation, and the interface speed cannot be sensed, what speed is the interface defaulted into?
A) 1 Gbps
B) 10 Mbps
C) 100 Mbps
D) None; the port is shut down
B
Explanation: B) IEEE autonegotiation enables devices to communicate with each other to find the fast speed agreeable between each. If this feature is disabled, Cisco devices have an additional capability to sense port speed. If this is unsuccessful, the port defaults to the lowest speed the port supports, which is 10 Mbps.
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