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【单选题】

Which VoIP components can permit or deny a call attempt on the basis of a network’s available bandwidth？（）

A、MCU

B、Application server

C、Gateway

D、Gatekeeper

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更多“Which VoIP components can permit or deny a call attempt on the basis of a network’s available bandwidth？（）”相关的问题
第1题
[单选题] Acme Company has offices around the country. With the use of Cisco Unified CallManager， the company has deployed a VoIP network in a multisite centralized configuration. Which IOS gateway feature should be deployed to enable VoIP devices to register with a local gateway and continue to function when the connection to the Cisco Unified CallManager is broken？ （）

A、gatekeeper multizone  B、Call Admission Control （CAC）  C、Automatic Alternate Routing （AAR）  D、Survivable Remote Site Telephony （SRST）  

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第2题
[] Which statement is true about the distributed call control in a VoIP network？（）

A、A.the VoIP endpoints have the intelligence to set up and control calls  B、B.Call setup and control functionality is centralized in one call agent or cluster  C、C.Call setup and control resides in call agents that are distributed throughout the network  D、D.Each VoIP device has separate call control， voice packetization， and transport mechanisms  

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第3题
[多选题] Which three QoS mechanisms can be configured to improve VoIP quality on a converged  network？（）

A、The use of a queuing method that will give VoIP traffic strict priority over other traffic    B、The use of RTP header compression for the VoIP traffic.  C、The proper classification and marking of the traffic as close to the source as possible  D、The use of 802.1QinQ trunking for VoIP traffic  E、The use of WRED for the VoIP traffic  

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第4题
[单选题] You are the network administrator of an enterprise with a main site and multiple remote sites. Your network carries both VOIP and data traffic. You agree with your service provider to classify VOIP and data traffic according to the different service RFCs. How can your data and VOIP traffic be marked？（）

A、data marked with DSCP AF21，VOIP marked with DSCP EF  B、data marked with DSCP AF51，VOIP marked with DSCP EF  C、data marked with the DE-bit，VOIP marked with the CLP-bit  D、data marked with DSCP EF，VOIP marked with DSCP AF31  E、data marked with IP precedence 5 VOIP marked with DSCP EF  

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第5题
[单选题] Which of the following expansion cards should be installed into a server to provide iSCSI SAN connectivity？ （）

A、 HBA  B、 PBX  C、 VoIP  D、 NIC  

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第6题
[单选题] VoIP bearer traffic is typically marked to which DSCP value？（）

A、cs3  B、cs7  C、ef  D、af41  E、af31  F、0（default）  

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第7题
[单选题] A system administrator has a failed disk drive that is mirrored to another disk drive. They successfully removed the logical volume copies off of the failed disk drive. Which of the following commands should be used to remove the failed disk drive from the volume group？（）

A、chvg  B、rmdev  C、reducevg  D、exportvg  

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第8题
[单选题] You are the network administrator of an enterprise with a main site and multiple remote sites. Your networkcarries both VOIP and data traffic. You agree with your service provider to classify VOIP and data trafficaccording to the different service RFCs. How can your data and VOIP traffic be marked？（）

A、data marked with DSCP AF21，VOIP marked with DSCP EF  B、data marked with DSCP AF51，VOIP marked with DSCP EF  C、data marked with the DE-bit. VOIP marked with the CLP-bit  D、data marked with DSCP EF，VOIP marked with DSCP AF31  E、data marked with IP precedence 5，VOIP marked with DSCP EF  

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第9题
[单选题] Which IOS feature provides dial plan scalability and bandwidth management for H.323 VoIP implementations？（）

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

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