单项选择题
A. 255.255.255.224
B. 255.255.255.248
C. 0.0.0.224
D. 0.0.0.8
E. 0.0.0.7
F. 0.0.0.3
单项选择题 A standard IP access list is applied to an Ethernet interface of a router. What does this standard access list filter on?（）
单项选择题 Which IP address and wildcard mask would you use in your ACL to block all the hosts in the subnet 192.168.16.43/28?（）
单项选择题 Which of the following access list statements would deny traffic from a specifichost?（）