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200-301 · Question #1372
200-301 Question #1372: Real Exam Question with Answer & Explanation
The correct answer is D: duplex mismatch. The exhibit indicates a duplex mismatch on the GigabitEthernet0/0/1 interface, which causes network performance issues.
Submitted by jaden.t· Mar 5, 2026Network Access
Question
Refer to the exhibit. What is the issue with the interface GigabitEthernet0/0/1?
Options
- Aport security
- Bcable disconnect
- Chigh throughput
- Dduplex mismatch
Explanation
The exhibit indicates a duplex mismatch on the GigabitEthernet0/0/1 interface, which causes network performance issues.
Common mistakes.
- A. Port security issues typically involve MAC address violations or interface shutdown due to security breaches, not duplex-related errors.
- B. A cable disconnect would typically show the interface status as 'down/down' or 'notconnect,' which is different from symptoms of duplex mismatch.
- C. High throughput is a desirable outcome, not an issue, although high throughput combined with errors could point to an underlying problem like duplex mismatch.
Concept tested. Network interface duplex mismatch troubleshooting
Reference. https://www.cisco.com/c/en/us/support/docs/lan-switching/ethernet/10574-4.html
Topics
#Duplex mismatch#Ethernet troubleshooting#Interface errors
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