单项选择题
A. 6
B. 7
C. 10
D. 19
单项选择题 WhatisthedeviceweightlimitperCallManagerinaCiscoIPphoneconfiguration？（）
单项选择题 TheCisconetwork-basedvirtualfirewallservicesolutionhelpsserviceproviderstodelivercost-effective，scalable，integratedsecurityservicesforenterprisecustomersusingCiscoplatforms.Whatisavirtualfirewall？（）
单项选择题 WhichprotocolwouldprovideblockaccesstoremotestorageoverWANlinks？（）