单项选择题
A. ISDN
B. Wireless
C. Frame Relay
D. T1 leased line
E. ATM
F. VPN
单项选择题 The TestKing network is subnetted using 29 bits for the subnet mask. Which wild card mask should be used to configure an extended access list to permit or deny access to an entire subnetwork?（）
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?（）