At which Ethernet interface speeds is the default duplex setting half?
A) 1 Gbps
B) 10 Gbps
C) 10 Mbps
D) 100 Mbps
C, D
Explanation: C) When the Ethernet port speed is unknown, 10 Mbps, or 100 Mbps, the default duplex setting is half. When the port speed is 1 Gbps, the default duplex setting is full. When the Ethernet port speed is higher than 1 Gbps, the only option is full duplex.
D) When the Ethernet port speed is unknown, 10 Mbps, or 100 Mbps, the default duplex setting is half. When the port speed is 1 Gbps, the default duplex setting is full. When the Ethernet port speed is higher than 1 Gbps, the only option is full duplex.
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