Which strongman helped me write down common network faults and how to troubleshoot them?

1. Some fault causes can be eliminated according to the relevant circumstances. For example, certain information can be used to troubleshoot hardware and focus on software. Step 3:

Troubleshooting: Do a good job of testing and observation at every step, confirm the results of each parameter change, and determine whether the problem is solved. Traces.

2. When troubleshooting network faults, you first need to check whether the network hardware equipment, including routers, switches, network cards, cables, etc., is working normally. For example, check whether the router is turned on, whether the network card is installed correctly, and so on.

3. Step 1: Inspect the cableFirst, check the cable between the computer and the network socket. For the 10 100 network environment, only one tool is needed to check for open circuits, short circuits and wiring.

In the case of Gigabit Ethernet, the cable is also checked for crosstalk and impedance faults.

4. Diagnosis and elimination methods of computer network faults (1) Figure out the performance and specific phenomena of computer network faults, classify the performance of computer network faults, and find relevant information to see if the shed can withstand and find further fault information. (2) Collect faults and fault-related information, and make full preparations for judging the cause of failures.

Summary. Step 1: Check whether the computer network interface is normal, plug the network cable that can access the Internet normally in the same dormitory into your computer network interface, if the network interface light flashes normally, it proves that the network interface is normal; Step 2:

After confirming that the network interface is normal, plug in the network cable computer with a red cross in the lower right corner of the computer logo, at this time, check whether the network cable from the wall information point to the computer is damaged, and can be detected by replacing the network cable. Step 3: Based on the above two steps, there is still a red cross in the lower right corner of the computer, which may be caused by a fault from the wall information point to the switch, and you need to contact the network administrator for maintenance.

Other common network problems and their solutions when the line is confirmed to be fault-free.

Common network failures.

Step 1: Check whether the computer network interface is normal, plug the network cable that can access the Internet normally in the same dormitory into your computer network interface, if the network interface light flashes normally, it proves that the network interface is normal; Step 2: After confirming that the network interface is normal, plug in the network cable computer with a red cross in the lower right corner of the computer, at this time, check whether the wall information point to the computer connection network cable is damaged, and can be detected by replacing the network cable.

Step 3: Based on the above two steps, there is still a red cross in the lower right corner of the computer, which may be caused by a fault from the wall information point to the switch, and you need to contact the network administrator for maintenance. Other common network problems and their solutions when the line is confirmed to be fault-free.

Fellow, I really didn't understand, I can be more specific.

Step 1: Check whether the computer network interface is normal, plug the network cable that can access the Internet normally in the same dormitory into your computer network interface, if the network interface light flashes normally, it proves that the network interface is normal; Step 2: After confirming that the network interface is normal, plug in the network cable computer with a red cross in the lower right corner of the computer, at this time, check whether the wall information point to the computer connection network cable is damaged, and can be detected by replacing the network cable.

Step 3: Based on the above two steps, there is still a red cross in the lower right corner of the computer, which may be caused by a fault from the wall information point to the switch, and you need to contact the network administrator for maintenance. Other common network problems and their solutions when the line is confirmed to be fault-free.