单项选择题
A. allows multiple access points to be connected wirelessly， without the need for a wired Ethernet network
B. replicates configuration parameters across access points in the cluster， while optimizing network performance
C. automatically configures wireless client devices via Wi-Fi Protected Setup
D. can get real-time traffic or bandwidth statistics from an access point within a cluster
多项选择题 Whichtwocomponentsareuniquetocontroller-basedwirelessinstallations？（）
单项选择题 IProutingprotocols，suchasOSPFandEnhancedEIGRP，areusedprimarilyinnetworkdesignsthatcontainentryandexitpointstothenetworkfromserviceproviders.WhatisacommontraitofIProutingprotocols？（）
单项选择题 WhichCiscoSmallBusinessSwitchwouldyourecommendtoasmallbusinesscustomerwhowantstosegmentthenetworkintoworkgroupsandhavealimitednumberofvoicedevicesonthenetwork？（）