单项选择题
A. IRDP
B. Proxy ARP
C. GLBP
D. HSRP
E. VRRP
F. IP Redirects
单项选择题 You work as a network technician at Company. Your boss， Mrs. ， is interested in GLBP. In particular， she wants to know the multicast address that this protocol uses. What should you tell her？ （）
单项选择题 WhatprotocolspecifiedbyRFC1256willallowanenabledIPhostanewrouterwhenarouterbecomesunavailable？（）
单项选择题 Whichofthefollowingprotocolsenablesagroupofrouterstoformasinglevirtualrouter，andthenusetherealIPaddressofarouterasthegatewayaddress，asdefinedinRFC2338？（）