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neler13 | CompTIA A+ | Module 4.5 - Troubleshooting Wireless and Wired Connections

By: neler13 | Related Course: CompTIA A+ | Published: February 9, 2018 | Modified: February 9, 2018
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NotepadDigital Tools

Ping send an echo request to devices. If we can ping the server through the switch.  May need to

Ipconfig will give you the IP information.

IPPPA address

Release and renew to get a new IP Address

Release and

If IP address is static you will not be able to ping.

Run a trace route command will go through all the devices to find out why you can not

Net stat to determine what

NBTstat –

NotepadTools - Physical

Cable tester – allows to check if a cable is good.  Make sure the

Loopback plug – to test the port on the interface card to see if the port is working.

Wire strippers – cut and strip wires.

Crimp the cable – Crimper tool.  Get rid of the core.then

Punch down tool – Once you crimp the cable you can not crimp again without harming the cable

Toner probe – tool to follow the signal down our cable that can be traced with the toner probe.

Troubleshooting Wireless and Wired Connections (part 4)

Troubleshooting Wireless and Wired Connections Part 4

Now it’s time to explore Wired Connectivity issues and by demonstration, you’ll learn how to master troubleshooting both digital and physical issues.

We begin with examining several physical tools such as cable tester, wire strippers, and we demonstrate how to use them correctly as well as what issues to look for in handling the correctly in addition to explaining their purpose and what diagnostics they provide.

For example, I handling the cable testing you want to assure all the cable being tested in plugged into the correct port, that the cabling itself is responding correctly because the internal wiring is accurately matched up, which also confirms that the cable is functioning properly.



NotepadTroubleshooting Wireless and Wired

No or Intermittent Connectivity – Not able to connect to our local router.  May be turned off.

1. Wireless out of range/interference

2. Collisions or Network Interference

3.  DNS/Firewall Issues

4.  Loose cable\Bad cable

5. ISP(Internet Service Provider

6. NIC malfunction\bad

7.  Adapter disabled

8.  APIPA – Receiving and IP address 169(means it is not getting  IP Address.  Statically assign ourselves an IP address either turned off or ran out of IP addresses.  Maybe need to expand IP address pool. Another device may have that address to cause the conflict.

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