A systems administrator notices a high number of collisions on a Linux-based server's Ethernet interface which is connected to an office's local area network (LAN). The collisions are resulting in noticeable performance degradation. While investigating the cause, what should the administrator check first in order to resolve the issue?
Collisions occur in networks using a shared medium like Ethernet when two devices attempt to transmit at the same time. They are common in older networks with hubs or in misconfigured networks. The correct answer is 'Switch port duplex settings' because duplex mismatches are a primary cause of network collisions. If one side of the connection is set to full duplex and the other to half duplex, it can lead to a collision domain where each side of the connection expects different behavior regarding data transmission.
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