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单选题
Which statement is true about the Call Admission Control （CAC） feature in VoIP networks？（）
A
CAC is used to allocate enough bandwidth for the number of calls that are allowed on the VoIP network.
B
CAC is used to protect the quality of the voice calls by preventing call establishment if enough resources are not available on the network.
C
CAC provides queuing mechanisms for voice calls if the packets exceed the configured or budgeted rate.
D
In a VoIP network the CAC can be replaced with the LLQ QoS mechanism if it has been properly implemented.
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更多 “单选题Which statement is true about the Call Admission Control （CAC） feature in VoIP networks？（）A CAC is used to allocate enough bandwidth for the number of calls that are allowed on the VoIP network.B CAC is used to protect the quality of the voice calls by preventing call establishment if enough resources are not available on the network.C CAC provides queuing mechanisms for voice calls if the packets exceed the configured or budgeted rate.D In a VoIP network the CAC can be replaced with the LLQ QoS mechanism if it has been properly implemented.” 相关考题
考题
Which IP telephony deployment model uses an H.225 Gatekeeper－Controlled trunk for call admission control within existing H.323 environments?()
A. single site with centralized call processingB. single site with distributed call processingC. multisite with centralized call processingD. multisite with distributed call processing
考题
Which statement is true about a distributed call control environment and the processing of dialed digits from an IP phone？（）A、The router that is directly connected to the IP phone will look up the called number in its call routing table.B、The router that is directly connected to the IP phone will inform its call agent when a service request is detected.C、When the IP phone is picked up，the IP phone initiates the service request.D、The directly connected router passes the collected digits to its call agent，and the call agent looks up in its call-routing table the called number.
考题
Which two are functions of an IP voice gateway?（）A、provide far-end call control B、provide far-end camera control C、translate analog voice to packetized voice D、transition call path between different networks E、provide locations-based call admission control
考题
Which statement is true about the routing table?（）A、The routing table exists in the control plane only.B、The routing table exists in the control plane and in the forwarding plane.C、The routing table contains both active and inactive routes.D、The routing table is stored on compact flash.
考题
Which statement is true about the routing table?（）A、The routing table exists in the control plane onlyB、The routing table exists in the control plane and the forwarding planeC、The routing table contains both active and inactive routesD、The routing table is stored on compact flash
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Which statement is true about vishing？（）A、Influencing users to forward a call to a toll number （for example， a long distance or international number）B、Influencing users to provide personal information over a web pageC、Using an inside facilitator to intentionally forward a call to a toll number （for example， a long distance orinternational number）D、Influencing users to provide personal information over the phone
考题
Which statement is true about the distributed call control in a VoIP network？（）A、the VoIP endpoints have the intelligence to set up and control callsB、Call setup and control functionality is centralized in one call agent or clusterC、Call setup and control resides in call agents that are distributed throughout the networkD、Each VoIP device has separate call control， voice packetization， and transport mechanisms
考题
Which statement is true about IBGP routers? （）A、They must be fully meshedB、They can be in a different ASC、They must be directly connected
考题
In a Teleworker deployment with a single IP phone connected to a Cisco 831 router, select the true statement regarding Call Admission Control.（）A、RSVP is a required configuration to support conference calls without voice packet loss. B、The QoS configuration on the 831 router must always provision sufficient bandwidth for two RTP streams. C、Call admission control is an issue only when using hardware DSP resources. D、When using the conference call features on a 7960 IP phone, only one RTP stream is present regardless of how many extensions are on the conference.
考题
Which statement describes the distributed call control model in VoIP networks？（）A、The gateway voice-capable device is configured to support call control directly performing call setup， call maintenance， and call teardownB、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.
考题
Which IP telephony deployment model uses an H.225 Gatekeeper-Controlled trunk for call admission control within existing H.323 environments?（）A、single site with centralized call processingB、single site with distributed call processingC、multisite with centralized call processingD、multisite with distributed call processing
考题
Which two statements are true about terms in a routing policy?（）A、A then statement is mandatory in a termB、If a term does not contain a from statement, all routers matchC、If a term does not contain a from statement, the Junos OS will not commitD、A then statement is not mandatory in a term
考题
Which statement is true about the forwarding table?（）A、The forwarding table is stored in the control plane onlyB、The forwarding table is stored in the control plane and in the forewarding planeC、The forwarding table contains both active and inactive routesD、The forwarding table can contain only sigle next hop per destination
考题
Which statement is TRUE about the CacheFactory class ？（）A、 it is a topology agnostic way to access NamedCachesB、 it provides mechanisms to manage underlying remote data sourcesC、 both A and B are TRUED、Neither A nor B are TRUE
考题
多选题Which two settings must be configured in order to use the GUI to configure Call Admission Control with voice applications?（）AQoS must be set to PlatinumBWMM must be enabledCQoS must be set to GoldDTSPEC must be disabledECisco Compatible Extensions must be disabled
考题
单选题Which statement is true about the forwarding table?（）A
The forwarding table is stored in the control plane onlyB
The forwarding table is stored in the control plane and in the forewarding planeC
The forwarding table contains both active and inactive routesD
The forwarding table can contain only sigle next hop per destination
考题
单选题Which statement is true about the routing table?（）A
The routing table exists in the control plane onlyB
The routing table exists in the control plane and the forwarding planeC
The routing table contains both active and inactive routesD
The routing table is stored on compact flash
考题
单选题Which statement is true about the routing table?（）A
The routing table exists in the control plane only.B
The routing table exists in the control plane and in the forwarding plane.C
The routing table contains both active and inactive routes.D
The routing table is stored on compact flash.
考题
单选题Which statement is true about the forwarding table?（）A
The forwarding table is stored in the control plane only.B
The forwarding table is stored in the control plane and in the forwarding plane.C
The forwarding table contains both active and inactive routes.D
The forwarding table can contain only a single next hop per destination.
考题
单选题In a Teleworker deployment with a single IP phone connected to a Cisco 831 router, select the true statement regarding Call Admission Control.（）A
RSVP is a required configuration to support conference calls without voice packet loss. B
The QoS configuration on the 831 router must always provision sufficient bandwidth for two RTP streams. C
Call admission control is an issue only when using hardware DSP resources. D
When using the conference call features on a 7960 IP phone, only one RTP stream is present regardless of how many extensions are on the conference.
考题
单选题Which statement is true about the distributed call control in a VoIP network？（）A
the VoIP endpoints have the intelligence to set up and control callsB
Call setup and control functionality is centralized in one call agent or clusterC
Call setup and control resides in call agents that are distributed throughout the networkD
Each VoIP device has separate call control， voice packetization， and transport mechanisms
考题
单选题Which statement is true about a distributed call control environment and the processing of dialed digits from an IP phone？（）A
The router that is directly connected to the IP phone will look up the called number in its call routing table.B
The router that is directly connected to the IP phone will inform its call agent when a service request is detected.C
When the IP phone is picked up，the IP phone initiates the service request.D
The directly connected router passes the collected digits to its call agent，and the call agent looks up in its call-routing table the called number.
考题
多选题Which two are functions of an IP voice gateway?（）Aprovide far-end call controlBprovide far-end camera controlCtranslate analog voice to packetized voiceDtransition call path between different networksEprovide locations-based call admission control
考题
单选题You issue this statement：ALTER DATABASE BACKUP CONTROLFILE TO TRACE； What does the statement generate？（）A
A text copy of the control file.B
A binary copy of the control file.C
A file containing a SQL statement which will re-create the database.D
A file containing a SQL statement which will re-create the control file.
考题
单选题Which statement describes the distributed call control model in VoIP networks？（）A
The gateway voice-capable device is configured to support call control directly performing call setup， call maintenance， and call teardownB
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.
考题
多选题Which three statements are true about load-based Call Admission Control?（）Agrants a VoWLAN client-initiated call based on the number of active clients associated to the accesspointBgrants a VoWLAN client-initiated call based on channel bandwidth capacityCuses the 802.11i specificationDuses 802.11 action framesErequires a WMM-enabled client
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