单项选择题

AclassBnetwork129.35has4subnetsandanetmaskof255.255.252……

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

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单项选择题AnetworkadministratorprovidesanIPaddressof128.135.0.142andasubnetmaskof255.0.0.0.Onceapingisattempted，itfails.Whichofthefollowingoptionsisthemostprobablecauseofthefailedping？（）

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

单项选择题WhichofthefollowingoptionsisrepresentativeofaClassBaddress？（）

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