单项选择题
A.disable Zone-Based Firewall as the two features are not compatible
B.disable Cisco Express Forwarding as the two features are not compatible
C.generate a certificate and export on Cisco.com to receive a signature update
D.import the public RSA key from the Cisco IPS team that allows the router to verify that a signatureupdate （which was signed by this key） comes from Cisco
单项选择题 Youaddthefollowingcommandsintoaroutedtopology：routereigrp1variance3traffic-shareminacross-interfaces.UsersnowcomplainaboutvoicequalityinyourVoIPsystem.Whatshouldbedone？（）
单项选择题 WhichcommandcanbeusedtochecktheassignmentofRPstomulticastgroups？（）
单项选择题 Whatdoesthecommandippimsend-rp-discoveryscope16achieve？（）