多项选择题
In a VoIP network， which three call signaling protocols are supported by the Cisco CallManager for call setup， call maintenance， and call teardown？ （）
A. H·323
B. UDP
C. RTP
D. TCP
E. Media Gateway Control Protocol （MGCP）
F. session initiation protocol （SIP）
相关考题
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单项选择题
AcmeCompanyhasseveralofficesaroundthecountry.ThecompanyhasdeployedaVoIPnetworkwithCiscoUnifiedCallManagerinamultisitecentralizedconfigurationbutthereisarequirementtoplaceacallagentatsomeoftheremotesites.WhichIOSgatewayfeatureshouldbedeployedattheremotesitetoenablelocalcallcontrol？（）
A. Gatekeeper multizone
B. Call Admission Control （CAC）
C. Automatic Alternate Routing （AAR）
D. Survivable Remote Site Telephony （SRST）
E. Cisco Unified CallManager Express （CME） -
单项选择题
UsingtheG.729codecandthedefaultcRTPconfiguration，whatistheapproximateVoIPbandwidthsavingsacrossaFrameRelaylinkthataddsa6byteframeheader？"（）
A. 55%
B. 58%
C. 60%
D. 63% -
多项选择题
Whichtwostatementsabouttheopenandsharedkeywireless-authenticationmethodsaretrue？（）
A. Shared key authentication is considered more secure than open authentication.
B. Shared key authentication is considered less secure than open authentication.
C. If the WEP keys do not match using the open authentication method， the client will not authenticate， associate， and transfer data.
D. If the WEP keys do not match using the open authentication method， the client will still be able to authenticate and associate， but will not transfer data.
E. If the WEP keys do not match using the open authentication method， the client will still be able to authenticate， associate， and transfer data.
