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The simplest network can be imagined as a single line of bus, and each computer can communicate by sending packets to the bus. However, as the number of computers in the network grows, this is not feasible and creates many problems: 1, bandwidth

To monitor the company's intranet machine, the boss recommended using Zabbix, online understanding, but also found some information, began to install Special thanks to Dream ~ from here set sail blog, to my installation help a lot. First, the

To produce a phenomenon: Three printers, can be a single when testing, when normal business, the number of data, three printers are responsible for the category at the same time the data needs to be printed, there is a printer exception, in the

Data communication is a communication mode and communication service that transmits information between two terminals according to a certain communication protocol. It can realize the data information transmission between computer and computer,

Whether you are sharing ADSL dial-up Internet access or through a broadband router directly to the Internet, we are likely to encounter the network when the intermittent disconnection phenomenon. In the face of this type of network failure

Since the computer was upgraded from Windows XP to Windows 7, managing documents has become much easier, such as Win7 viewing files, as follows: XP system, you can only press the back button to see the previous level of the directory WIndows7 is

POP3 (Post Office Protocol 3), the 3rd version of the Post Office agreement, provides a way to connect personal computers to the Internet's mail server and electronic protocols for downloading e-mail. It is the first offline protocol standard for

File sharing In the last century is also at the edge of it technology, but it is convenient for the geek who have computers to dial into the internet. Today, however, file sharing has become the daily work of millions of users around the world, and

Definition of a firewall With the rapid development of computer network technology, the problem of network security has become more and more prominent in front of various users. Only from the author's information shows that at present on the

Memory can not be read and written, I think you must have seen such a similar problem. The company has been having this problem lately: And sometimes any icon on the desktop is not complete, from the Event Viewer there are a lot of inexplicable

This article will introduce some practical knowledge, that is how to configure the security policy in the firewall. However, it should be noted that the specific configuration of the firewall is not uniform, do not say that different brands, is the

The operating system needs reloading. The first thing to figure out is, what does this mean by "reloading"? In fact, the so-called "reload" refers to reinstall the operating system, from the current situation, estimated that few ordinary users will

I am configured under Windows 2003 and are similar in XP and other versions of Windows systems. Normally, you should first open the Device Manager to check whether the NIC driver is mounted, the operation path is: Right click on the desktop "My

Firewalls are a barrier to network security: A firewall (as a blocking point, control point) can greatly improve the security of an internal network and reduce risk by filtering unsafe services. Because only a carefully chosen application protocol

The new semester arrived, many students have to match the machine, the new computer security defense done? Can you refuse to be a hacker's chicken? Unfortunately, many beginners do not know or ignore the sensitive port shielding, such as 135 ports,

Process Analysis: 1, system calls need a user space to the kernel space conversion, different platforms have different instructions to complete such a conversion, this instruction is also called operating system into (operating Systemtrap)

The content of the system call here is a lot to tell, and it's time to go to kernel to see how a service routine is implemented. Shutdown and restart commands are shutdown,reboot,init,poweroff,halt,telinit in Linux. They are all achieved through sys_

Experimental requirements: 1. Create VLAN 2.VLAN Division Correct 3. Broadcast Request MAC address Open Here is the topology map and the required equipment: I. Creating a VLAN Here is the command and configuration: LSW1: system-view Oct 20

"Single Arm Routing" Function: Realize communication between different VLAN Implementation method: Configure the Sub-interface, encapsulate different VLAN separately "VTP" Chinese name: Virtual LAN Relay protocol Role: Unified Management VLAN

Delete unnecessary documents + empty Recycle Bin If you've just formatted the hard drive and installed the Windows2000 user, then this step won't be necessary for you because there's almost no junk file in your system. But if you check, there will