单项选择题
You are the Cisco Network Designer in Cisco.com. What is the term for a logical SAN which provides isolation among devices physically connected to the same fabric？（）
A. InterSwitch Link B. Virtua LAN C. Virtual Output Queuing D. virtual storage area network
单项选择题 Anetworkvulnerabilityscannerispartofwhichcriticalelementofnetworkandsystemsecurity？（）
单项选择题 YouaretheCiscoNetworkDesignerinCisco.com.Youaredesigningane-Commercemodule，whichroutingstatementiscorrect？（）
单项选择题 WithCallManagerv3.1，whatisthemaximumnumberofserversinaCluster？（）
