Network+/Troubleshooting/Network Issues
This lesson covers network issues.
Objectives and Skills
[edit | edit source]Objectives and skills for the network issues portion of Network+ certification include:[1]
- Given a scenario, troubleshoot and resolve common network issues
- Incorrect IP configuration/default gateway
- Broadcast storms/switching loop
- Duplicate IP
- Speed and duplex mismatch
- End-to-end connectivity
- Incorrect VLAN assignment
- Hardware failure
- Misconfigured DHCP
- Misconfigured DNS
- Incorrect interface/interface misconfiguration
- Cable placement
- Interface errors
- Simultaneous wired/wireless connections
- Discovering neighboring devices/nodes
- Power failure/power anomalies
- MTU/MTU black hole
- Missing IP routes
- NIC teaming misconfiguration
- Active-active vs active-passive
- Multicast vs broadcast
Readings
[edit | edit source]Multimedia
[edit | edit source]- Watch YouTube: Troubleshooting IP Configurations - CompTIA Network+ N10-006 - 4.6.
- Watch YouTube: Troubleshooting DNS and DHCP - CompTIA Network+ N10-006 - 4.6.
- Watch YouTube: Troubleshooting Broadcast Storms and Switching Loops - CompTIA Network+ N10-006 - 4.6.
- Watch YouTube: Troubleshooting Interface Configurations - CompTIA Network+ N10-006 - 4.6.
- Watch YouTube: Troubleshooting VLAN Assignments - CompTIA Network+ N10-006 - 4.6.
- Watch YouTube: Troubleshooting Network Connectivity - CompTIA Network+ N10-006 - 4.6.
- Watch YouTube: Troubleshooting Mismatched MTUs - CompTIA Network+ N10-006 - 4.6.
- Watch YouTube: Troubleshooting NIC Teaming - CompTIA Network+ N10-006 - 4.6.