单项选择题
如下图，两个路由器（Atlanta和Brevard）用串口连接起来。但是他们之间没有数据传输，已知Atlanta配置正确，下图给出部分配置，路由器Brevard上导致该问题的原因是（）。
A.没有设置loopback命令 B.IP地址不正确 C.子网掩码不正确 D.串行链路封装不正确 E.最大传输单元（MTU）设置得太大 F.带宽设置和直连的接口不匹配
You have finished physically installing an access point...
单项选择题You have finished physically installing an access point on the ceiling at your officE.At a minimum, which paramenter must be configured on the access point in order to allow a wireless client to operate on it?（）
A.AES B.PSK C.SSID D.TKIP E.WEP
At which OSI layer is a logical path created between tw...
单项选择题At which OSI layer is a logical path created between two host systems（）。
A.session B.transport C.network D.data link E.physical
根据下图，网络连接到路由器R2被汇总为一条192.168.176.0/21的路由，并发给R1。哪两个数据包目的...
多项选择题
根据下图，网络连接到路由器R2被汇总为一条192.168.176.0/21的路由，并发给R1。哪两个数据包目的地址R1会转发给R2？（）
A.192.168.194.160 B.192.168.183.41 C.192.168.159.2 D.192.168.183.255 E.192.168.179.4 F.192.168.184.45
