In a TCP/IP network， which of the following protocols is involved when a user issues a ping command？（）

单项选择题AllofthefollowingcommandswillsetthehostnameintheODMdatabaseEXCEPT：（）。

A.chdev
B.odmadd
C.hostname
D.smitty hostname

单项选择题WhichofthefollowingATMcomponentsareneededtoconfigureanATMSVC（switchedvirtualcircuit）classicalIPinterface？（）

A.LES
B.BUS
C.LECS
D.ARP server

单项选择题Which of the following adapters are located in the same planar？（） Ⅰ.00-00-02-08 Ⅱ.01-00-02-08 Ⅲ.00-00-04-01 Ⅳ.00-05-04-01

A.Ⅰ，Ⅱ
B.Ⅲ，Ⅳ
C.Ⅰ，Ⅱ，Ⅲ
D.Ⅰ，Ⅲ，Ⅳ

单项选择题Whichofthefollowingfunctionsdoesthe ifconfigen4down perform？（）

A.Removes the en4 interface
B.Removes the en4’s network route
C.Stops all traffic through the en4 interface
D.Stops all traffic through the en4 and removes its network route from the routing table

单项选择题Whenchoosingahostname，whichofthefollowingnamingconventionsismostimportanttoconsider？（）

A.The name is unique globally
B.The name is unique in a specified domain
C.The name is not named after a person， place or thing
D.The name has special meaning to the machine’s function