The Acme company has determined that during its busiest hours， the average number of internal VoIP calls across the WAN link is four （4）. Since this is an average， the WAN link has been sized for six （6） calls with no call admission control. What will happen when a seventh call is attempted across the WAN link？ （）

单项选择题Whencallsaredeniedbycalladmissioncontrol（CAC），thecallsarereroutedthroughthePSTNviatheuseofwhichCiscoCallManagerfeature？（）

A.automated alternate routing （AAR）
B.Cisco CallManager Attendant Console
C.real-time protocol （RTP）
D.Survivable Remote Site Telephony （SRST）

多项选择题WhichtwostatementsabouttheQoSfunctionalityoftheCiscoSDMaretrue？（）

A.the first step when using the SDM QoS wizard is to select the inbound interface on which the QoS policy must be applied
B.the SDM QoS wizard can be used to optimize LAN， WAN， and VPN interfaces
C.he SDM QoS wizard supports network-based application recognition （NBAR） to provide deep and stateful packet inspection
D.he SDM QoS wizard will apply custom queuing and priority queuing policies to the identified interfaces
E.he SDM QoS wizard will apply low latency-queuing，custom-queuing and priority-queuing policies to the identified interfaces
F.to create and manage the QoS settings， the user must select the QoS wizard task under the Monitor option

单项选择题WhichIOSfeatureprovidesdialplanscalabilityandbandwidthmanagementforH.323VoIPimplementations？（）

A.gatekeeper
B.Call Routing
C.Call Admission Control
D.Digital Signal Processors

多项选择题WhichthreepiecesofinformationareusedtocalculatethetotalbandwidthofaVoIPcall？（）

A.the packetization size
B.the serialization of the interface
C.the quantization
D.the packet rate
E.the UDP overhead
F.the TCP overhead

多项选择题WhataretwocharacteristicsoftheDiffServmodel？（）

A.service guarantee
B.traffic that is divided into classes
C.not scalable to large implementations
D.QoS mechanisms that are used without prior signaling
E.applications that signal their particular QoS and bandwidth requirements