多项选择题

WhichthreeoptionsareprerequisitestoconfiguringCiscoAuto……

Which three options are prerequisites to configuring Cisco AutoOoS？（）

A.Cisco Express Forwarding （CEF） must be globally enabled.
B.Prior to the enabling of the Cisco AutoOoS feature， the bandwidth command must be applied on all interfaces or subinterfaces.
C.After the enabling of the Cisco AutoOoS feature， the bandwidth command must be applied on all interfaces or subinterfaces .
D.OoS policies must be enabled on all interfaces that will participate in the AutoOoS configuration.
E.An IP address must be configured on all low-bandwidth interfaces （768 kb/s or lower） that will participate in the AutoOoS configuration
F.An IP address must be configured on all interfaces that will participate in the AutoOoS configuration

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多项选择题WhatarethreefactorsusedtodeterminetheamountofbandwidththatisrequiredforasingleVoIPcall？（）

A.codec
B.link speed
C.Layer 2 encapsulation
D.packet overhead （IP/UDP/RTP）
E.link delay
F.total number of simultaneous calls that are allowed

单项选择题WhichstatementdescribesthedistributedcallcontrolmodelinVoIPnetworks？（）

A.The gateway voice-capable device is configured to support call control directly performing call setup， call maintenance， and call teardown
B.The gateway voice-capable device has a local call routing table configured through a routing protocol.
C.The gateway voice-capable device relies on a call agent to support call control.
D.The gateway voice-capable device relies on a gatekeeper to support call setup， call maintenance， and call teardown.

多项选择题WhichtwopairingsmatchtheapplicationwiththecorrectCosvalue？（）

A.CoS 0 = Best-Effort Data
B.CoS 1 = Best-Effort Data
C.CoS 3 = High Priority
D.CoS 4 = High Priority Data
E.CoS 5 = Voice Bearer
F.CoS 7 = Voice Bearer

多项选择题Whichtwooptionscanbeusedastrafficdescriptorswhenclassifyingandmarkingtraffic？（）

A.incoming interface
B.Layer 2 differentiated services code point （DSCP）
C.Layer 3 IP precedence
D.outgoing interface

单项选择题What will the H.323 gateways do when they receive a call request?（）

A.forward an admission request to the local gatekeeper
B.forward an admission request to the remote gatekeeper
C.send a location request to the remote gateway
D.send a location request to the remote gatekeeper