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Which two statements are correct about the signaling methods that are utilized for transmitting voice？ （）
- A、 Channel-associated signaling transmits control signals in band and therefore reduces the bandwidth available for the voice data stream.
- B、 Channel-associated signaling utilizes a separate TDM channel for transmitting control signals.
- C、 Common channel signaling transmits control signals in band and therefore reduces the bandwidth available for the voice data stream.
- D、 Common channel signaling uses one of the TDM channels to transmit control information reducing the number of channels available for voice.
- E、 ISDN BRIs implement channel-associated signaling.
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更多 “Which two statements are correct about the signaling methods that are utilized for transmitting voice？ （）A、 Channel-associated signaling transmits control signals in band and therefore reduces the bandwidth available for the voice data stream.B、 Channel-associated signaling utilizes a separate TDM channel for transmitting control signals.C、 Common channel signaling transmits control signals in band and therefore reduces the bandwidth available for the voice data stream.D、 Common channel signaling uses one of the TDM channels to transmit control information reducing the number of channels available for voice.E、 ISDN BRIs implement channel-associated signaling.” 相关考题
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Which two statements correctly identify considerations to take into account when deciding on Campus QoS Design elements?()
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When you decide on Campus QoS Design elements, which two statements correctly identify considerations to be taken into account?()
A. Voice needs to be assigned to the hardware priority queue.B. Voice needs to be assigned to the software priority queue.C. Call signaling must have guaranteed bandwidth service.D. Strict-priority queuing should be limited to 50 percent of the capacity of the link.
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When you decide on Campus QoS Design elements, which two statements correctly identify considerations to be taken into account?（）A、Voice needs to be assigned to the hardware priority queue.B、Voice needs to be assigned to the software priority queue.C、Call signaling must have guaranteed bandwidth service.D、Strict-priority queuing should be limited to 50 percent of the capacity of the link.
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The Cisco SDM will create a QoS policy that provides services to two types of traffic. Which two statements indicate the default QoS parameters that are created by SDM？（）A、 Business-critical traffic will be sorted into two QoS classes.B、 Real-time traffic will be sorted into one QoS class.C、 Voice traffic will be considered real-time traffic while call signaling will be considered business-critical.D、 All traffic except real-time will be considered best-effort.E、 Routing， management， and transactional traffic will be considered business-critical.F、 Voice and call signaling traffic will be considered real-time.
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Which two statements correctly identify considerations to take into account when deciding onCampus QoS Design elements？ （）A、 Voice needs to be assigned to the hardware priority queueB、 Voice needs to be assigned to the software priority queueC、 Call signaling must have guaranteed bandwidth serviceD、 Strict-priority queuing should be limited to 50 percent of the capacity of the linkE、 At least 33 percent or the link bandwidth should be reserved tor default best effort class
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Which statement is true about IP telephony calls？（）A、 A Voice over IP （VoIP） packet consists of the voice payload， IP header， TCP header， RTP header， and Layer 2 link header.B、 The voice carrier stream uses H323 to set up， maintain， and tear down call endpoints.C、 Call control signaling uses Real-Time Transport Protocol （RTP） packets that contain actual voice samples.D、 The sum of bandwidth necessary for each major application， including voice， video， and data， should not exceed 75 percent of the total available bandwidth for each link.
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Which two statements about the QoS policy generation phase of the Cisco SDM QoS wizard are true？（）A、the SDM QoS wizard will create two real-time traffic classes to handle VoIP， voice signaling， and video packetsB、the SDM QoS wizard will create three real-time traffic classes to handle VoIP， voice signaling， video， and video packetsC、the SDM QoS wizard will create four real-time traffic classes to handle VoIP， voice signaling， video， and video streaming packetsD、the SDM QoS wizard will create two business-critical traffic classes to handle transactional and network management packetsE、the SDM QoS wizard will create three business-critical traffic classes to handle transactional， network management， and routing packetsF、the SDM QoS wizard will create four business-critical traffic classes to handle transactional， network management， routing， and best-effort packets
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Which two statements correctly identify factors to consider when Configuring WAN QoS？（）A、Voice Traffic uses Assured ForwardingB、Voice Signaling traffic uses Assured ForwardingC、Voice Signaling traffic uses priority queuingD、Voice Traffic uses priority queuingE、Voice signaling traffic should use priority queuing with Assured Forwarding
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Which two QoS statements are true about the use of the SDMQoS wizard？（）A、business-critical traffic includes VoIP and voice signaling packetsB、SDM can be used to configure a basic QoS policy for incoming traffic on WAN interfaces andIPsec tunnelsC、SDM can provide QoS for real-time traffic and business-critical trafficD、SDM creates a custom-queuing （CQ） or a priority-queuing （PQ） policyE、SDM creates a low latency queuing （LLQ） service policy with its associated classesF、when allocating bandwidth， values can be entered in either bandwidth percentage or kilobytes per second （kBps）
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Which two statements are true about the function of CAC？（）A、CAC provides guaranteed voice quality on a link.B、CAC artificially limits the number of concurrent voice calls.C、CAC is used to control the amount of bandwidth that is taken by a call on a link.D、CAC prevents oversubscription of WAN resources that is caused by too much voice traffic.E、CAC allows an unlimited number of voice calls while severely restricting，if necessary，other forms of traffic.F、CAC solves voice congestion problems by using QoS to give priority to UDP traffic.
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Which two statements are true about the protocols that are used for transmitting voice traffic？（）A、RTP multiplexing is used to keep multiple phone conversations separateB、RTP provides end-to-end delivery services for voice traffic.C、UDP is used to ensure a reliable transmission from sender to receiver.D、RTP is used to provide resource reservation for the voice stream.E、UDP provides multiplexing of multiple phone conversations.
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多选题Which two characteristics apply to a CAS T1 interface?（）Asignaling travels in-bandBup to 24 voice channelsCup to 32 voice channelsDsignaling travels in time slot 17Euses Q.931 signaling protocol in a common channel
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多选题Which three statements about bidirectional PIM are true？（）ATraffic for a bidirectional group flows along the one shared tree and simultaneously utilizes multiple paths in a redundant network topologyBIt does not require any traffic signaling in the protocolCMembership to a bidirectional group is signaled using explicit Join messagesDIt maintains source-specific forwarding stateEIt reduces memory， bandwidth， and CPU requirements
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多选题Which three statements are true about the data traffic characteristics of voice traffic？ （）Alatency must be kept below 150 msBlatency is not a concern as long as jitter is kept below 30 msCvoice packets do not require a specific type of queuingDvoice packets are rather smallEvoice packets require TCP for rapid retransmission of dropped packetsFvoice packets require a fairly constant bandwidth reserved for voice control traffic as well as forthe voice payload
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多选题Which three functions are associated with a Cisco Unified CallManager？ （）Aconnects traditional telephony devices to voice over IP infrastructureBconverts analog signals to digital formatCperforms voice compressionDperforms call processingEperforms dial plan administrationFperforms signaling and device control
考题
多选题Which two statements are true about the function of CAC？ （）ACAC provides guaranteed voice quality on a link.BCAC artificially limits the number of concurrent voice calls.CCAC is used to control the amount of bandwidth that is taken by a call on a link.DCAC prevents oversubscription of WAN resources that is caused by too much voice traffic.ECAC allows an unlimited number of voice calls while severely restricting， if necessary， other forms of traffic.FCAC solves voice congestion problems by using QoS to give priority to UDP traffic.
考题
多选题Which two statements are correct about the signaling methods that are utilized for transmitting voice？ （）AChannel-associated signaling transmits control signals in band and therefore reduces the bandwidth available for the voice data stream.BChannel-associated signaling utilizes a separate TDM channel for transmitting control signals.CCommon channel signaling transmits control signals in band and therefore reduces the bandwidth available for the voice data stream.DCommon channel signaling uses one of the TDM channels to transmit control information reducing the number of channels available for voice.EISDN BRIs implement channel-associated signaling.
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