单项选择题Which one of the binary bit patterns below denotes a Class B address?()

A. 0xxxxxxx
B. 10xxxxxx
C. 110xxxxx
D. 1110xxxx
E. 11110xxx


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1.单项选择题What is the IP address range for the first octet in a class B address, in binary form?()

A.00000111-10001111
B.00000011-10011111
C.10000000-10111111
D.11000000-11011111
E.11100000-11101111
F.None of the above

2.单项选择题What is the subnet for the host IP address 201.100.5.68/28?()

A.201.100.5.0
B.201.100.5.32
C.201.100.5.64
D.201.100.5.65
E.201.100.5.31
F.201.100.5.1

3.单项选择题What is the subnet for the host IP address 172.16.210.0/22?()

A. 172.16.42.0
B. 172.16.107.0
C. 172.16.208.0
D. 172.16.252.0
E. 172.16.254.0
F. None of the above


5.单项选择题How many subnetworks and hosts are available per subnet if you apply a /28 mask to the 210.10.2.0 class C network?()

A. 30 networks and 6 hosts.
B. 6 networks and 30 hosts.
C. 8 networks and 32 hosts.
D. 32 networks and 18 hosts.
E. 14 networks and 14 hosts.
F. None of the above

7.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

8.单项选择题How do you express the binary number 10110011 in decimal form?()

A.91
B.155
C.179
D.180
E.201
F.227

9.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?()

A.11001100-00111111-00011000
B.11000110-11000000-00011111
C.11001110-00011111-01100000
D.11001001-00111111-00110010
E.11001100-01111000-00011000
F.11111000-01100111-00011001

10.单项选择题How would the number 172 be expressed in binary form?()

A.10010010
B.10011001
C.10101100
D.10101110

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