Which of the following parameters can prevent packet fragmentation on routers when connecting to remote networks？（）

单项选择题InaTCP IPnetwork，whichofthefollowingprotocolsisinvolvedwhenauserissuesapingcommand？（）

A.TCP
B.UDP
C.ICMP
D.SMTP

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