Network+/Troubleshooting/Network Issues

This lesson covers network issues.

Objectives and Skills

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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

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Multimedia

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  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.

Activities

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References

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