Computer Network Composition Components

Node: The node is mainly the network address (IP) of the device, so the above diagram of the General PC, Linux Server, ADSL modem and network printer, and so on, can be referred to as an individual node! is the hub in the middle a node? Because he does not have an IP, the hub is not a node.

Server host: In the direction of network connection, the host that provides the data to "respond" to the user can be referred to as a server. For example, Yahoo is a WWW server, Kunshan FTP (http://ftp.ksu.edu.tw/) is a file server and so on.

Workstation (workstation) or client: Any device that can be entered into a computer network can be a workstation, which, if it is initiated online, proactively initiates an online request for data, which can be called a client. For example, the general PC opens the browser to Yahoo for news data, that the general PC is the client.

NET card (network Interface card, NIC): Built-in or outside the host of a device, mainly provide online cards, most of the current use of RJ-45 connectors with Ethernet network card. In general, node has more than one network card to achieve the function of network online.

Network interface: The network interface designed by the software, mainly in the provision of network address (IP) tasks. A NIC can match at least one network interface, and each host also has an internal network interface, that is loopback (LO) this cycle test interface!

Network form or Topology (topology): How each node links above the network, generally speaking is the physical connection. For example, it is shown in a way known as Star, which is a kind of topology in which a form of each node is connected in a radial manner, mainly through an intermediate connection device.

Gateway (route) or gate: With more than two network interfaces, you can connect more than two different network segments, such as the IP-sharing device is a common gateway device. Does the ADSL modem above count as a gateway? In fact, because the modem is usually regarded as a network card device in the host, we can use the dial-up software on the general PC to simulate the modem as a physical network card (PPP), so he is not a gateway device!

Computer Network Composition Components