单项选择题
The Cisco Smart Business Communications System offers support of third-party applications. When using TimeCard View， what device is used by employees to clock in and clock out？（）
A. IP phone B. wireless access point C. secure router D. time clock
单项选择题 WhatistheSMBPartnerPracticeBuilder？（）
单项选择题 Whichstatementbestdescribesclusteringinasmall-businesswirelessnetwork？（）
多项选择题 Whichtwocomponentsareuniquetocontroller-basedwirelessinstallations？（）
