Troubleshooting should include an explanation of how to resolve the issue, and the following:
- Loss of Internet connectivity
- Interface errors
- Split horizon
- DNS issues
- Interference
- Router configurations
- Customer premise equipment
- Smart jack/Network Interface Unit (NIU)
- Demarc
- Loopback
- Channel Service Unit (CSU)/Data Service Unit (DSU)
- Copper line drivers/repeaters
- Company security policy
- Throttling
- Blocking
- Fair access policy/utilization limits
- Satellite issues (latency)
Process/Skill Questions:
- What is your school’s WAN security policy?
- What methods can be used to alleviate DNS issues?