毛陽陽10月27日第四周做業

交換機  Switch

路由器  Router

組件  Component

傳輸控制協議  TCP

互聯網協議  IP

萬維網  WWW

入侵檢測和防護系統  IDPS

超文本傳輸控制協議  HTTP

電子郵件  E-mail

文件傳輸協議  FTP

防火牆  Firewall

入侵檢測系統  IDS

網絡安全  Network Safety

開放系統互聯  OSI

A LAN is used for communications in s small community in which resources, such as(printers),software,and servera,are shared. each device connected to(packets)data frames among multiple users of other local area networks. In LANs,(forward)are additional headers appended for local routing.These new-looking packets are known as(address).

 As with most application-layer protocola,SMTP has two sides:a client side, which executes on the senders mail server, and a servee side, which executes on the recipients mail server.

互聯網是一個互聯的計算機網絡組成的全球系統,他使用標準的互聯網協議套件(TCP/IP)爲全球數10億用戶提供服務。

As with most application-layer protocols, SMTP has two sides:a client aide,which executes on the senders mail server,and a server side,which executes on the recipients mail server.

與大多數應用層協議同樣,smtp有兩個方面:一個是在發送者的郵件服務器上執行的客戶端,另外一個是在接收者的郵件服務器上執行的客戶端。

In the star topology,all users are directly connected to a central user through two unidirectional links:onefor uplink and the other for downlink.

在星型拓撲中,全部用戶經過兩個單向鏈路直接鏈接到一個用戶中心:一個用於上行，另外一個用於下行。

A computer network is a group of xomputers that are connected to each other for the purpose of communication.

計算機網絡是爲了通訊而相互鏈接的一組計算機。

WANs are used to connect LANs and other types of networks together,so that users and computers in one location can communicate with users and computers in other locations.

廣域網用於將局域網和其餘類型的網絡鏈接在一塊兒,以便一個位置的用戶和計算機能夠與其餘位置的用戶和計算機通訊。