A.Class AB.Class BC.Class CD.Class DWhichofthefollowing……

单项选择题Givenanewimplementation，whichofthefollowingproceduresshouldbeusedtodetermineadefaultgateway’sIPaddress？（）

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AclassBnetwork129.35has4subnetsandanetmaskof255.255.252.0（11111111.11111111.11111100.00000000）.TowhichofthefollowingsubnetswilltheclassBnetworkdeliverapacketofaddress129.35.14.04（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？（）

A.128.55.103.2
B.195.201.22.11
C.227.100.100.1
D.120.102.27.120

单项选择题The local host on a small network is named Earth. There is also a remote host on the network named Saturn.  The system administrator of the network is in the  u tmp directory of Earth， and starts an ftp to Saturn as root.  Which of the following sequence of commands issued from the local host， Earth， will：（）。  1.Check to see if there is an a.out file on remote host Saturn.   2.Change to the  u new directory on Earth.  3.Transfer a.out from Earth to Saturn.

A.ls a.out cd /u/new put a.out
B.ls a.out cd /u/new get a.out
C.ls a.out lcd /u/new put a.out
D.ls a.out lcd /u/new get a.out