Final exams in Building 7 on the date of June 20th are postponed because of the electricity problem. The new-fixed date for the exams is June 23rd in Building 7 (the same building) and the rooms for each class are not changed. Students who are going to take the exams in that building on that day please pass the change notice to everyone you know to make sure no one will miss the exams.
Repeat: Final exams on June 20th in Building 7
have been changed to
June 23rd in the same rooms and the same building.
Sorry for the inconvenience the event brings to all of you. Thanks.
第38题: [单项选择]交换式局域网的核心是 (42) 。 A. 路由器 B. 服务器 C. 局域网交换机 D. 带宽 参考答案:C 答案解析:[分析] 本题考查交换式局域网和一些网络设备的功能。 交换式局域网的核心设备是局域网交换机，局域网交换机有多个端口，可以直接连接很多个结点，组成一个局域网。局域网交换机可以在它的多
