Computer Support/Hardware Troubleshooting/Networks

This lesson covers troubleshooting networks.

Objectives and Skills

Objectives and skills for the troubleshooting networks portion of A+ certification include:

Given a scenario, troubleshoot wired and wireless networks with appropriate tools.

• Common symptoms
  • No connectivity
  • APIPA/link local address
  • Limited connectivity
  • Local connectivity
  • Intermittent connectivity
  • IP conflict
  • Slow transfer speeds
  • Low RF signal
  • SSID not found
• Hardware tools
  • Cable tester
  • Loopback plug
  • Punch down tools
  • Tone generator and probe
  • Wire strippers
  • Crimper
  • Wireless locator
• Command line tools
  • PING
  • IPCONFIG/IFCONFIG
  • TRACERT
  • NETSTAT
  • NBTSTAT
  • NET
  • NETDOM
  • NSLOOKUP

Readings

1. Wikipedia: Cable tester
2. Wikipedia: Punch down tool
3. Wikipedia: Signal generator
4. Wikipedia: Wire stripper
5. Wikipedia: Crimp connection

Multimedia

1. YouTube: Troubleshooting Networks - CompTIA A+ 220-901 - 4.4
2. YouTube: Network Troubleshooting Tools - CompTIA A+ 220-901 - 4.4
3. YouTube: Network Troubleshooting at the Command Line - CompTIA A+ 220-901 - 4.4