A.地址范围：10.0.0.0—10.255.255.255
B.地址范围：172.16.0.0---172.31.255.555
C.地址范围：192.168.0.0---192.168.255.255
D.类地址范围：192.168.0.0---192.168.0.255

A.1
B.2
C.16
D.256

A.aaa accounting network start-stop tacacs+
B.aaa accounting system start-stop tacacs+
C.aaa accounting exec start-stop tacacs+
D.aaa accounting connection start-stop tacacs+

A.直连路由
B.静态路由
C.动态路由
D.默认路由

A.Router（config）#password-encryption
B.Router（config）#service password-encryption
C.Router#service password-encryption
D.Router#password-encryption

A.show ip access-list
B.show access-list
C.list ip interface
D.show ip interface

A.access-list 50 deny 192.168.1.1 0.0.0.255
B.access-list 110 deny ip any any
C.access-list 2500 deny tcp any host 192.168.1.1 eq 22
D.access-list 101 deny tcp any host 192.168.1.1

A.SSID
B.WEP
C.WPA
D.IEEE802.11i/WPA2

A.热点已关闭
B.安全密钥不匹配
C.存在射频信号干扰
D.笔记本电脑的驱动需要升级，以支持新的无线协议

A.检查配置寄存器
B.试图从TFTP服务器启动
C.在Flash中加载镜像文件
D.检查NVRAM中的配置文件

A.0.0.0.240
B.255.255.255.252
C.255.255.255.0
D.255.255.255.224