多项选择题
A.amount of RAM
B.bridge priority
C.IOS version
D.IP address
E.MAC address
F.speed of the links
单项选择题 Which component of VPN technology ensures that data can be read only by its intended recipient?（）
多项选择题 An inbound access list has been configured on a serial interface to deny packet entry for TCP and UDP ports 21, 23 and 25. What types of packets will be permitted by this ACL? （）
多项选择题 保留给自环测试的IP地址是（）。