A server’s network interface statistics report a growing number of collisions. You suspect the NIC is negotiating a different link mode than the switch port. Which command reveals the interface’s current speed and duplex settings?
ethtool eth0
ifconfig eth0
ip link show eth0
netstat -i eth0
The ethtool command displays detailed Ethernet device settings, including link speed and duplex mode. ifconfig does not provide duplex information, ip link show reports status but omits duplex details, and netstat -i lists packet statistics but not link characteristics.
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