Interface Instability Caused by a Half-Duplex / Duplex Mismatch

The collisions are worth looking at. It implies a duplex mismatch. Although the router is full-duplex, the other side might be manually configured for a half-duplex. This causes high number of collisions. Just FYI, broadcast storm is when when we see broadcast packet numbers above 3000. There is a 30% formula but I can't recall it.

Answer is B, but don't take my word for it, go learn something Collisions are a strong indicator of half-duplex environment or duplex mismatch Collisions will cause CRC errors and data corruption - another symptom of physical problem (such as duplex mismatch) Frame errors - also a physical layer (duplex mismatch) symptom Input errors - ALSO a physical issue indicator. correlates with duplex mismatch

The correct answer is A. The receive buffer is full due to a broadcast storm. Here's why: In the output of the show interface command, we see 100 input errors and 260 input packets, which indicates that there may be an issue related to receiving data on the interface. Additionally, there are 110 broadcasts and 100 collisions, which suggests that there is likely a broadcast storm or excessive broadcast traffic, overwhelming the receive buffer. Explanation of incorrect options: B (Half-duplex): The interface is operating in Full Duplex, so half-duplex negotiation is not the issue. C (ARP timeout): ARP type and timeout configuration would not reject broadcast packets. D (Small frames): There is no indication that small frames are being rejected based on size.

Correct