使用超级终端配置以太网交换机,必须用RS-232电缆连接交换机的()。
- A.RJ-45端口
- B.控制台端口
- C.并行端口
- D.PSTN 接口
正确答案及解析
正确答案
解析
Cisco设备上的接口有很多种,且具有不同的功能,下面介绍几种常见常用的接口。
Console口:这是Cisco设备的控制台端口,管理员可以通过它对路由器或交换机进行控制和设置,这是互连设备的控制台,决不能用控制线以外的其他线缆插进Console口,以免损坏或烧毁设备。Console口通过连接PC的COM口进行控制操作。
Ethernet接口(以太口):用于连接网络或主机的接口,路由器和交换机上都有。
AUI接口:老式的以太口,通常在路由器上可以见到。它可以通过转接器转换为RJ45口。
Serial接口(串行接口):常用于连接广域网接入,如帧中继、DDN专线等,也通过背对电缆用来进行路由器之间的互连。连在Serial接口上的电缆不能带电拔插,以避免Serial接口被烧坏。
BRI接口:ISDN的基本速率接口,用于ISDN广域网接入的连接。
AUX接口:异步串行接口,主要是用于远程拨号调试。
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