单项选择题

Which of the following class networks contains 65，534 hosts？（）

A.Class A
B.Class B
C.Class C
D.Class D

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单项选择题

Given a new implementation， which of the following procedures should be used to determine a default gateway’s IP address？（）

A.The address will always end in 255.
B.The address will always be the first interface’s IP address
C.The address will always be the network with a 1 as the final octet.
D.It is important to consult with the network administrator prior to making assumptions regarding the default gateway’s IP addres

单项选择题

A class B network 129.35 has 4 subnets and a netmask of 255.255.252.0 （11111111.11111111.11111100.00000000）. To which of the following subnets will the class B network deliver a packet of address 129.35.14.04 （10000001.00100011.00001110.00000100）？（）

A.129.35.12.0
B.129.35.16.0
C.129.35.52.0
D.129.35.128.0

单项选择题

A network administrator provides an IP address of 128.135.0.142 and a subnet mask of 255.0.0.0. Once a ping is attempted， it fails. Which of the following options is the most probable cause of the failed ping？（）

A.0 is not valid in an IP address
B.128 is a reserved network
C.The subnet mask should be 255.255.0.0. since it is a class B
D.A network problem has occurred since IP and subnet are valid

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