Cisco CCNA 200-301 Practice Question

Late collisions on an Ethernet network typically indicate a duplex mismatch between connected devices. When one device is set to full-duplex and the other to half-duplex, the half-duplex device will experience collisions because it tries to detect the carrier before sending, while the full-duplex device transmits without checking. Ensuring both devices are configured with the same duplex settings resolves this issue. While excessive cable length and electromagnetic interference can cause network problems, they are less likely to specifically cause late collisions. Using an incorrect cable category might affect network performance but does not directly result in collisions.