单项选择题
A. Layer 2 mode
B. Layer 2 Edge mode
C. Layer 3 mode
D. Layer 3 In-Band mode
单项选择题 WhichIPtelephonydeploymentmodelusesanH.225Gatekeeper-ControlledtrunkforcalladmissioncontrolwithinexistingH.323environments？（）
多项选择题 WhichtwosettingsmustbeconfiguredinordertousetheGUItoconfigureCallAdmissionControlwithvoiceapplications？（）
多项选择题 Whendesigningaconvergednetwork，whichmeasurescanbetakenatthebuildingaccesslayertohelpeliminatelatencyandensureend-to-endqualityofservicecanbemaintained？（）