Reasons why the network has no internet access: 1. Broadband arrears; 2. Poor network cable contact, strengthen the network cable; 3. Router and optical modem failure; 4. Problems with the WiFi itself; 5. Computer system problems; 6 , the IP address is not set properly;
Operating system for this tutorial: Windows 10 system, DELL G3 computer.
The reasons may be: broadband arrears, poor network cable connection, router and optical modem failure, WiFi itself problems, computer system problems, IP address is not set properly, etc.
Broadband networks are generally bound to mobile phone cards. When the mobile phone is in arrears, the broadband network will naturally be unable to access the Internet. This is because the network operator has forcibly closed the network.
When the network cable is loose and the connection is poor, you cannot access the Internet. At this time, when you go to the web page, it will show that you cannot connect to the network.
Because the router and optical modem of the transmission network are faulty, it will also lead to the inability to access the Internet.
The weak WiFi signal causes some computers to be unable to connect to the Internet.
There may be a problem with the system and the network card is broken.
Solution:
You only need to pay a certain fee to resume normal Internet access.
You can choose to reinforce the network cable. If necessary, you can unplug the network cable and plug it in again to solve the problem.
If something goes wrong, just replace the router.
Computer network
Computer network refers to multiple computers and their external devices with independent functions in different geographical locations that are connected through communication lines. In the network operating system, network management software and A computer system that realizes resource sharing and information transfer under the management and coordination of network communication protocols.
The classification of computer networks is the same as the general classification of things. It can be classified according to the different properties and characteristics of things (that is, the attributes of things). In layman's terms, a computer network is composed of multiple computers (or other computer network devices) physically (or logically) connected together through transmission media and software. In general, the computer network basically consists of four parts: computer, network operating system, transmission medium (which can be tangible or intangible, such as the transmission medium of wireless network is space), and corresponding application software.
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