第5题: [单项选择]{{B}}Questions 11 to 18are based on the conversation you have just heard.{{/B}} A. He enjoyed using his new camera. B. He left his camera at the airport. C. He left his camera in his friend’s car. D. He lost his camera on his trip. 参考答案:C 答案解析:[听力原文]
W: You must have enjoyed using your new camera on your trip.
M: I would have, but after buy
第7题: [单项选择]随着微型计算机的广泛应用,大量的微型计算机是通过局域网连入到广域网的,而局域网与广域网的互联一般是通过 ______ 设备实现的。 A. Ethernet交换机 B. 路由器 C. 网桥 D. 电话交换机 参考答案:B 答案解析:[知识点] 网络互联技术与互联设备
[评析] 在因特网中,用户计算机需要通过校园网、企业网或ISP联入地区主干网,地区主干网通过国家主干网联入到国家间的高速主干网,这样就形成一种路由器互联的大型、层