This video identifies interface and cable issues, such as collisions, errors, mismatch duplex, and speed. This is important for layer 1 troubleshooting.
- [Instructor] While basic troubleshooting isn't something … that must be done on a daily basis, … it is generally extremely important. … Symptoms of an interface, or cabling issue, … can vary from slow connections, to complete loss of service. … Most often, cabling issues will manifest as complete … failure, which makes things much simpler to troubleshoot. … Often, the easiest thing to do is test and replace … network cables between the two connected devices. … If this repairs the issue, then an engineer … can move on with their day. … If there are other symptoms like slow connections, … I'd generally try something simple, like plugging my laptop … into the connection to see if this resolves the issue. … If the cables have been repaired, and the issue persists … with my laptop in place, I'll examine the switchboard. … I'll hop into the CLI of my Catalyst 3550 Switch here. … My endpoint is plugged into Port 24. … I'll start by issuing a show interface fa0/24 command. … On the effective port. …
Note: A complete overview of the exam and registration instructions can be found at https://www.cisco.com/c/en/us/training-events/training-certifications/exams/current-list/ccna-200-301.html.
- Network models
- Network components
- Troubleshooting the interface and cable issues
- Configuring IPv4 and IPv6 addressing
- Switching concepts
- Switching configuration
- Wireless architectures
- Wireless security
Skill Level Intermediate
Networking Foundations: IP Addressingwith Timothy Pintello2h 35m Intermediate
1. Network Fundamentals
2. Network Access
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