多项选择题
Which two of the addresses below are available for host addresses on the subnet 192.168.15.19/28?（）
A.192.168.15.17 B.192.168.15.14 C.192.168.15.29 D.192.168.15.16 E.192.168.15.31 F.None of the above
单项选择题 How do you express the binary number 10110011 in decimal form?（）
单项选择题 The MAC address for your PC NIC is: C9-3F-32-B4-DC-19. What is the address of the OUI portion of this NIC card, expressed as a binary number?（）
单项选择题 How would the number 172 be expressed in binary form?（）
