The professional nouns involved in the computer network

URL: A Uniform Resource Locator is a concise representation of the location and access methods of resources that can be obtained from the Internet, and is the address of standard resources on the Internet. Each file on the Internet has a unique URL that contains information that indicates the location of the file and how the browser should handle it.

Wireshark(formerly known as Ethereal) is a network packet analysis software. The function of the network packet analysis software is to retrieve the network packet and display the most detailed network packet information as far as possible. Wireshark uses WinPcap as an interface to exchange data messages directly with the network card.

DNS(domain Name System), a distributed database of domain names and IP addresses that are mapped to each other on the Internet, makes it easier for users to access the Internet without remembering the number of IP strings that can be read directly by the machine. The process of obtaining the IP address of the host name through the hostname is called Domain name resolution (or hostname resolution). The DNS protocol runs on top of the UDP protocol, using the port number 53.

Default gateway : Configure the default gateway to create a default path in the IP routing table. A single host can have multiple gateways. The default gateway means that if a host cannot find an available gateway, it sends the packet to the default designated gateway, which handles the packet.

Note: The default gateway for a computer cannot be specified casually and must be specified correctly, or a computer will send the packet to a computer that is not a gateway, so that it cannot communicate with other computers on the network. Default gateway settings are set manually and automatically two ways

intersection line : Also called the inverse line, the line sequence according to one end 568A, one end 568B standard arrangement good line sequence, and with RJ45 Crystal Head clamp well.

The specific line-order method is: 1, White green, 2, green, 3, white orange, 4, blue, 5, white blue, 6, Orange, 7, White Brown, 8, Brown, that is, 568A standard.

The other end on this basis will the eight lines in the line 1th and Line 3 line, 2nd and Line 6 line Exchange position, then the line sequence of the network cable becomes 568B (namely White orange, orange, white green, blue, white blue, green, white brown, brown order) do line standard unchanged, so cross line is done.

crossover lines are typically used for connections to the same device, such as routers and routers, computers, and computers.

RJ45 is a connector for information sockets (i.e., communication leads) in the cabling system, which consists of a plug (connector, crystal Head) and socket (module). RJ is the acronym for Registered Jack, which means "registered sockets".

The RJ45 of a computer network is commonly known as a standard 8-bit modular interface.

The professional nouns involved in the computer network