多项选择题
Given a subnet mask of 255.255.255.224, which of the following addresses can be assigned to network hosts?（）
A.15.234.118.63 B.92.11.178.93 C.134.178.18.56 D.192.168.16.87 E.201.45.116.159 F.217.63.12.192
多项选择题 Which of the following host addresses are member of networks that can be routed across the public Internet? （）
多项选择题 Which connections allow the use of full-duplex Ethernet?（）
单项选择题 What is the purpose of pressing the Ctrl+Break keys during the router password recover procedure?（）
