Network+/Troubleshooting/Network Issues

This lesson covers network issues.

Objectives and Skills

Objectives and skills for the network issues portion of Network+ certification include:

• 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

Multimedia

1. Watch YouTube: Troubleshooting IP Configurations - CompTIA Network+ N10-006 - 4.6.
2. Watch YouTube: Troubleshooting DNS and DHCP - CompTIA Network+ N10-006 - 4.6.
3. Watch YouTube: Troubleshooting Broadcast Storms and Switching Loops - CompTIA Network+ N10-006 - 4.6.
4. Watch YouTube: Troubleshooting Interface Configurations - CompTIA Network+ N10-006 - 4.6.
5. Watch YouTube: Troubleshooting VLAN Assignments - CompTIA Network+ N10-006 - 4.6.
6. Watch YouTube: Troubleshooting Network Connectivity - CompTIA Network+ N10-006 - 4.6.
7. Watch YouTube: Troubleshooting Mismatched MTUs - CompTIA Network+ N10-006 - 4.6.
8. Watch YouTube: Troubleshooting NIC Teaming - CompTIA Network+ N10-006 - 4.6.