單項選擇題You have a Class C network, and you need ten subnets. You wish to have as many addresses available for hosts as possible. Which one of the following subnet masks should you use?()

A. 255.255.255.192
B. 255.255.255.224
C. 255.255.255.240
D. 255.255.255.248
E. None of the above


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1.多項選擇題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

2.單項選擇題How do you express the binary number 10110011 in decimal form?()

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

3.單項選擇題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

4.單項選擇題How would the number 172 be expressed in binary form?()

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

5.單項選擇題How would the number 231 be expressed as a binary number?()

A. 11011011
B. 11110011
C. 11100111
D. 11111001
E. 11010011

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