交换机。 Switch 路由器。 Router 组件 assembly
传输控制协议 Transmission control protocol
互联网协议 Internet Protocol
万维网 Web
入侵检测和防御系统 Intrusion detection and defense system
超文本传输控制协议 Hypertext transfer control protocol
电子邮件 E-mail
文件传输协议 File transfer protocol
防火墙 firewall
入侵系统检测Intrusion system detection
网络安全 network security
开放系统互联 Open system interconnection
2. Choose the proper words to fill in the blanks.（选词填空）
A LAN is used for communications in a small community in which resources, such as address software, and servers, are shared. Each device connected to a LAN has a unique frames,Tivo or more LANS of the same type can also be connected to(Printers)data frames among siple users of other local area networks. In LANS, forword are additional headers appended for local routing. These new-looking packets are known as(packets)
Words to be chosen from：（可选词）
Packets, address, frames, printers, forward
faupslate the following English into Chinese.（将下面英语句子翻译为中文）(/)The Intemet is