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This is the mobile group intranet firewall software, don't you know that the computer is not yours? Stolen?
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Computer network refers to a computer system that connects multiple computers and their peripheral devices with independent functions in different geographical locations through communication lines, and realizes resource sharing and information transmission under the management and coordination of network operating systems, network management software and network communication protocols.
A computer network is a collection of computer systems that connect multiple computers with communication lines for the purpose of transmitting information, and a computer network consists of a transmission medium and communication equipment.
The simplest computer network consists of only two computers and a link that connects them, two nodes and one link.
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Computer network: A system that shares resources between geographically disparate computers.
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It's a network system.
Hehe, computer networks are exactly what the name suggests.
Personal understanding: It is a network composed of computers, which is intertwined by multiple computers and can access each other's resources, and can even be used for collaborative computing, such a composition is called a computer network.
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It's a network system, inside the computer.
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Network operating system is a kind of software program that can replace the operating system, is the heart and soul of the network, and is a special operating system that provides services to the network computer.
Through the network, data and various messages can be transmitted to each other, which is divided into server and client. The main function of the server is to manage the sharing of various resources and network devices between the server and the network, and to unify and control the traffic to avoid the possibility of paralysis.
Due to the emergence and development of network computing, one of the main characteristics of modern operating systems is to have the function of surfing the Internet, therefore, except in the early 90s of the 20th century, Novell's netware and other systems are called network operating systems, people generally no longer refer to a certain operating system as a network operating system.
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Network operating systems (NOS) focus on optimizing the characteristics associated with network activity, i.e., managing resources such as shared data files and software applications over the network, while OS focuses on optimizing the interface between the user and the system and the applications running on it.
The operating system is based on the BIOS, a set of software used to run the application software, it mobilizes the functions of the hardware, translates the application software to run, and other software gives orders to the computer through it.
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The network operating system (NOS) is the heart and soul of the network, and it is the operating system that provides network communication and network resource sharing functions to network computers. It is a collection of software that is responsible for managing the entire network resources and making it convenient for network users. Since a network operating system runs on top of a server, it is sometimes referred to as a server operating system.
Network operating systems differ from single-user operating systems (e.g., Windows 98, etc.) or multi-user operating systems running on workstations depending on the type of services provided. In general, the purpose of a network operating system is to make the best possible network-related features. Such as sharing data files, software applications, and sharing hard drives, printers, modems, scanners, and fax machines.
The purpose of the operating system of a computer in general, such as DOS and OS 2, is to allow the user to interact optimally with the system and the various applications running on this operating system.
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An exclamation point appears when the computer cannot connect to the network because the computer has not updated the network card driver.
The steps to resolve the problem are as follows:
1. First click on the computer to open the "System Properties" dialog box.
2. Then click on the "Device Manager" tab on the left side of the "System Properties" dialog box.
3. In the device list of the "Device Manager" tab, find the device that needs to update the driver, and then right-click to open the menu, and click the "Update Driver Software" option in this menu.
4. Then select the first option on the page of the "Update Driver Software" option, let the computer system automatically search for the latest driver on the Internet, and then you can connect to WiFi normally.
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Hello, when using the computer to connect to the network, if Windows cannot connect to the wireless network, we need to find the "wireless network", and then click on the "network installation key" in the properties, enter the network wireless password to complete the Internet access steps, very simple. At this time, if there is a small exclamation mark in the signal bar, then it means that there is a certain problem with network connectivity, although at this time we can still access the Internet, what is the reason for this?
The network connection shows an exclamation point but can access the Internet.
1.If there is such a problem, you need to detect the router and the cat first, the general cat is the number on the left, and the second light is flashing to indicate that there is a signal, if there is no signal, you need to check whether the line connected to the cat is intact.
2.If there is still no signal to access the Internet, you can restart the router or try the modem, if it still can't reset the router parameters and start the connection again, in many cases this is completely effective.
3.If you are connected to a cat or router, you can directly plug in the computer connection without going through the router to detect whether the router is causing the inability to access the Internet, if it is the router that causes you to need to change the router.
4.In many cases, it is the operator's problem, if the error prompt 678 pops up after connection, the remote computer is not responding, and there is still such a problem after restarting the cat or router, you should consult the customer service of the broadband operator to seek a solution.
How to restart the network.
2. In the pop-up window, there is an operation bar on the left side, find and click the "Change adapter settings" option.
3. At this time, you will see the option of "Local Connection". Right-click on the option.
Note: If you are using wifi to connect to the Internet, you can select the icon of the corresponding wireless network.
4. Select the "Disable" option in the pop-up menu options, and then you can turn off the network card.
5. Go back to the network device window again, and you will see that the network card has been disabled.
6. Click the right mouse button again and select the "Enable" option to start the network card in it, and thus complete a network card restart.
How to restart your router with a network lock.
1. Open the browser, then enter the router address in the address bar, press Enter, open the login interface at this time, enter the username and password, generally admin, and click the login button.
2. Then enter the router's settings interface and click on the "System Tools" item in the menu on the left.
3. Then click on the "Restart Router" item in the drop-down menu that opens.
4. Then click the "Restart Router" button on the right side and click the "OK" button.
5. The system will automatically connect after restarting.
If you can't find the cause, it is very difficult to solve the problem even if you use the above methods.
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I believe that many people usually use the computer to surf the Internet, will encounter the situation that the computer suddenly cannot access the Internet, and an exclamation mark will appear on the network connection icon below the computer. Next, I will tell you about the rabbit.
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Either the network connection is restricted, or the IP address is conflicting. You can go to the local connection properties and set the IP address yourself, and that's it.
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If you mean that a yellow exclamation mark appears on the broadband network connection icon of your computer, it is usually caused by IP address conflict, it is recommended that you open the [Network Sharing Center], select [Change Adapter Settings], right-click the local connection properties, double-click IPv4, select Automatically Get IP, then open [Run], enter cmd, and enter [ipconfig ew] in the command prompt to try to get the IP address again.
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Limited local connection means that there is a problem with your local connection.
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These icons represent computers in that area you're on, and they're all in the same computer network.
The home is a community fiber broadband, according to the upstairs, is there so many people in the vicinity using fiber broadband Internet access? Is it in a network segment?
That's right, which of your communities share a main fiber to access the Internet, which will not affect your Internet speed. In the same network segment.
Will there be the name of my computer in someone else's computer? Is it related to sharing? Can I turn it off?
Yes, other people's computers will also have your computer name, you can turn it off, but if you turn it off, you won't be able to access the LAN.
If you want to turn it off, you can disable it in the system startup item. There are many ways to do this, so if you want to turn it off, please contact me.
Hope it helps! o(∩_o~
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Indicates the name and number of computers connected to your local area network, and you can access the computer after some shares are opened.
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Those icons are computers around you that are surfing the Internet.
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A virtual private network (VPN) is a technology that establishes a private network over a public network. The reason why it is called a virtual network is mainly because the connection between any two nodes of the entire VPN network does not have the end-to-end physical link required by the traditional private network, but is a logical network built on the network platform provided by the public network service provider, such as the Internet, ATM (asynchronous transmission mode), frame relay, etc., and user data is transmitted in the logical link. It covers the expansion of private networks that encapsulate, encrypt, and authenticate links across shared or public networks.
VPNs mainly use color tunneling technology, encryption and decryption technology, key management technology, and user and device identity authentication technology.
If you want to use it, keep it, delete it if you don't use it.
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If you have a wireless network, it means that someone is illegally connected to your wireless network, so set and change your wireless network connection back password and the entry password of the answering device.
If you don't have wireless, then there's one possibility:
You've taken your computer to a computer company to install an operating system, and they've used your computer to access their local area network, so the access is automatically recorded on your computer.
Of course, there may be:
1,Installed remote LAN sharing software such as hamachi2,Hacked,But this trace is too obvious.,Rookie.
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That's an online neighbor.
The machine on the same intranet as you, if you should have it at home (if you have a machine), is your machine on the Internet in other places such as work or something, and the computer itself remembers it?
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The solution is as follows:
1. Adopt a direct du press twice
The esc key in the upper left corner of the keyboard, generally dao is fine, if not, then it belongs to the next one.
2. Make sure that the "Auto Arrangement" and "Align to Network" functions are enabled, right-click on the blank space of the desktop, point to the "Arrange Icon", and check whether the "Auto Arrangement" and "Align to Network" are ticked in front of them in the right window, and remove the checks in front of these two items.
3. Right-click on the blank space of the taskbar and select "Properties", switch to the "Start Menu" tab in the pop-up "Taskbar and Start Menu Properties", click the "Customize" button below, and the pop-up "Customize Start Menu" window switches to the "Advanced" tab, pull down the slider, find and tick in front of "Enable Context Menu and Drag & Drop", and click "OK" to exit (note that the XP system enables drag and drop).
4. Click the "Start" menu, select "Run", enter "without quotation marks" in the run window), click OK to open "Group Policy", "Management Template" under the user configuration project in "Windows Components", click "Task Scheduler", and then find "Disable Drag and Drop" in the right window, double-click to open the project, set it to "Not Configured" or "Disabled" and click "OK" to exit, as shown in the following figure:
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1 Short: The system starts normally. This is something we hear every day and it shows that there is nothing wrong with the machine.
2 short: The routine is wrong, please enter the CMOS setup, and reload the new setting inaccurate option. 1 long and 1 short:
There was an error with the RAM or motherboard. Try a different memory, if it still doesn't work, you have to change the motherboard. 1 long and 2 short:
Wrong monitor or display card. 1 long and 3 short: The keyboard gripper is wrong.
Check the motherboard. 1 Long 9 Short: Motherboard flash RAM or EPROM error, BIOS corruption.
Try a different block of flash ram. Constant Ringing (Long Ringing): The memory module is not plugged in tightly or broken.
If it still doesn't work, you can only change the memory to another one. Non-stopping: The power supply and monitor are not properly connected to the graphics card.
Review all the plugs. Repeated short rings: Power supply issues.
No sound, no display: Power issue.
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