niusouti.com

Which statement is true about the capabilities of a voice gateway router？（）A、voice gateways with analog interfaces need a gatekeeper to convert analog signals into digital format before voice is encapsulated into IP packetsB、voice gateways need a gatekeep

题目

Which statement is true about the capabilities of a voice gateway router？（）

  • A、voice gateways with analog interfaces need a gatekeeper to convert analog signals into digital format before voice is encapsulated into IP packets
  • B、voice gateways need a gatekeeper to interconnect the VoIP networks the PSTN network
  • C、voice gateways with Cisco Unified CallManager Express （CME） can permanently act as a call agent for IP phones
  • D、voice gateways equipped with a DSP module can take the role of the call agent during WAN failure.
相似考题

1.Which IP telephony component provides call processing, such as signaling, that in a traditional voice network is provided by switching equipment, such as a PBX?()A.Advanced call-handling software, such as Cisco UnityB.Call-management hardware and software, such as CiscoCallManagerC.Client-based software, such as CiscoSoftPhoneD.Voice gateways, such as the Cisco VG248 Analog Phone Gateway

2.When analog signals are digitized using the G.711 codec， voice samples are encapsulated into protocol data units （PDUs） involving which three headers？ （）A、IPB、TCPC、RTPD、UDPE、H323F、CRTP

3.Which two VoIP capabilities are utilized when the CallManager and the gateway are configured for Survivable Remote Site Telephony？（）A、 Analog phones， connected to the PSTN， act as internal call agents if IP communication to the CallManager is lost.B、 An onsite gateway reroutes calls over the PSTN if IP communication to the CallManager is lost.C、 The IP phones can reroute calls over the PSTN if IP communication to the CallManager is lost.D、 Local voice gateways can assume the function of a call agent if IP communication to the CallManager is lost.E、 IP phones use an internal call agent if IP communication to the CallManager is lost.

4.Which two statements about voice VLANs are correct？（）A、Voice VLANs eliminate the need for QoS configurationB、Voice VLANs are used on trunk links to eliminate the need for QoS CoS markingsC、Voice VLANs are mainly used to reduce the number of access switch ports that are used in the networkD、Voice VLANs can be configured to forward existing CoS priorities or override themE、Voice VLANs are mainly used between access layer switches and distribution layer switchesF、Voice VLANs can be configured on Layer 2 ports only

更多“Which statement is true about the capabilities of a voice gateway router？（）A、voice gateways with analog interfaces need a gatekeeper to convert analog signals into digital format before voice is encapsulated into IP packetsB、voice gateways need a gatekeep”相关问题

  • 第1题：

    Which two statements are true about analog to digital conversion of voice signals for use in digital telephony networks？（）

    • A、The three required steps in the analog to digital conversion are sampling，encoding，and compression.
    • B、The three required steps in the analog to digital conversion are sampling，quantization，and compression.
    • C、The three required steps in the analog to digital conversion are sampling，quantization，and encoding.
    • D、The output of the sampling process is a pulse code modulation （PCM） signal.
    • E、The output of the sampling process is a pulse amplitude modulation （PAM） signal.

    正确答案:C,E

  • 第2题：

    Which IP telephony component provides call processing, such as signaling, that in a traditional voice network is provided by switching equipment, such as a PBX?（）

    • A、Client-based software, such as CiscoSoftPhone
    • B、Voice gateways, such as the Cisco VG248 Analog Phone Gateway
    • C、Call-management hardware and software, such as CiscoCallManager
    • D、Advanced call-handling software, such as Cisco Unity

    正确答案:C

  • 第3题：

    Which two statements are true about voice ports on a router？ （）

    • A、 Calls to the PSTN can be made via the use of FXO or T1/E1 trunk ports.
    • B、 Calls to the PSTN can be made via FXS or T1/E1 trunk ports.
    • C、 Analog and IP phones can be connected to the VoIP network via FXO or T1/E1 trunk ports.
    • D、 Calls between analog phones that are attached to the FXS ports in a VoIP network can be completely processed by voice-enabled routers.

    正确答案:A,D

  • 第4题：

    Which two statements are true about Voice over IP （VoIP） packet delivery in a digital infrastructure？ （）

    • A、 Packets can arrive out of order.
    • B、 Packets must take the same path to the destination.
    • C、 Once packets are received at the destination router， the router performs sampling to ensure the quality of the voice traffic.
    • D、 Packets can experience varying delays across the network.
    • E、 Packets containing voice samples are sequentially numbered by default， allowing for reordering upon arrival at the terminal router along the path.

    正确答案:A,D

  • 第5题：

    Which statement is true about the comparison of voice traffic with video traffic？（）

    • A、video conferencing traffic tends to be much more bursty in nature and is more prone to have an impact on other traffic flows
    • B、latency requirements are less stringent for video traffic than for voice traffic
    • C、video traffic is less sensitive to dropped packets than for voice traffic
    • D、video traffic requires the retransmission capabilities of TCP whereas voice uses UDP
    • E、video traffic tends to be much more bursty in nature and is more prone to have an impact on other traffic flows
    • F、voice traffic requires the retransmission capabilities of TCP whereas video uses UDP

    正确答案:B,D

  • 第6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 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.

    正确答案:A

  • 第7题：

    What are two steps that are taken when a router converts a voice signal from analog to digital form？（）

    • A、sampling
    • B、packetization
    • C、quantization
    • D、serialization

    正确答案:A,C

  • 第8题：

    单选题
    Which IP telephony component provides call processing, such as signaling, that in a traditional voice network is provided by switching equipment, such as a PBX?（）
    A

    Client-based software, such as CiscoSoftPhone

    B

    Voice gateways, such as the Cisco VG248 Analog Phone Gateway

    C

    Call-management hardware and software, such as CiscoCallManager

    D

    Advanced call-handling software, such as Cisco Unity


    正确答案： A
    解析： 暂无解析

  • 第9题：

    多选题
    When analog signals are digitized using the G.711 codec， voice samples are encapsulated into protocol data units （PDUs） involving which three headers？ （）
    A

    IP

    B

    TCP

    C

    RTP

    D

    UDP

    E

    H323

    F

    CRTP


    正确答案： A,F
    解析： 暂无解析

  • 第10题：

    多选题
    Which three functions are associated with a Cisco Unified CallManager？ （）
    A

    connects traditional telephony devices to voice over IP infrastructure

    B

    converts analog signals to digital format

    C

    performs voice compression

    D

    performs call processing

    E

    performs dial plan administration

    F

    performs signaling and device control


    正确答案： B,E
    解析： 暂无解析

  • 第11题：

    多选题
    Which two statements are true about analog to digital conversion of voice signals for use in digital telephony networks？（）
    A

    The three required steps in the analog to digital conversion are sampling，encoding，and compression.

    B

    The three required steps in the analog to digital conversion are sampling，quantization，and compression.

    C

    The three required steps in the analog to digital conversion are sampling，quantization，and encoding.

    D

    The output of the sampling process is a pulse code modulation （PCM） signal.

    E

    The output of the sampling process is a pulse amplitude modulation （PAM） signal.


    正确答案： B,E
    解析： 暂无解析

  • 第12题：

    单选题
    Which statement is true about voice VLANs？ （）
    A

    When the voice VLAN feature is enabled， all untagged voice and data traffic is sent through the voice VLAN.

    B

    The voice VLAN feature is enabled by default.

    C

    The IP phone overrides the priority of all incoming data traffic （tagged and untagged） and sets the CoS value to 0.

    D

    The default CoS value is 1 for incoming voice and data traffic.


    正确答案： B
    解析： 暂无解析

  • 第13题：

    Which IP telephony component provides call processing, such as signaling, that in a traditional voice network is provided by switching equipment, such as a PBX?（）

    • A、Advanced call-handling software, such as Cisco Unity
    • B、Call-management hardware and software, such as CiscoCallManager
    • C、Client-based software, such as CiscoSoftPhone
    • D、Voice gateways, such as the Cisco VG248 Analog Phone Gateway

    正确答案:B

  • 第14题：

    Which statement is true about the comparison of voice traffic with video traffic？（）

    • A、 Video conferencing traffic tends to be much more bursty in nature and is more prone to have an impact on other traffic flows.
    • B、 Latency requirements are less stringent for video traffic than for voice traffic.
    • C、 Video traffic is less sensitive to dropped packets than for voice traffic.
    • D、 Video traffic requires the retransmission capabilities of TCP whereas voice uses UDP.
    • E、 Voice traffic tends to be much more bursty in nature and is more prone to have an impact on other traffic flows.
    • F、 Voice traffic requires the retransmission capabilities of TCP whereas video uses UDP.

    正确答案:A

  • 第15题：

    Which three functions are associated with a Cisco Unified CallManager？ （）

    • A、 connects traditional telephony devices to voice over IP infrastructure
    • B、 converts analog signals to digital format
    • C、 performs voice compression
    • D、 performs call processing
    • E、 performs dial plan administration
    • F、 performs signaling and device control

    正确答案:D,E,F

  • 第16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 

    正确答案:A,C,D

  • 第17题：

    Which statement is true about voice VLANs？ （）

    • A、When the voice VLAN feature is enabled， all untagged voice and data traffic is sent through the voice VLAN.
    • B、The voice VLAN feature is enabled by default.
    • C、The IP phone overrides the priority of all incoming data traffic （tagged and untagged） and sets the CoS value to 0.
    • D、The default CoS value is 1 for incoming voice and data traffic.

    正确答案:C

  • 第18题：

    Which three functions can an Integrated Services Router perform in a VoIP network？（）

    • A、 voice stream mixing for conference calling
    • B、 voice gateway
    • C、 call admission control
    • D、 analog or digital phone interfaces
    • E、 XML application services
    • F、 large scale dial plan application

    正确答案:B,C,D

  • 第19题：

    单选题
    Which IP telephony component provides call processing, such as signaling, that in a traditional voice network is provided by switching equipment, such as a PBX?（）
    A

    Advanced call-handling software, such as Cisco Unity

    B

    Call-management hardware and software, such as CiscoCallManager

    C

    Client-based software, such as CiscoSoftPhone

    D

    Voice gateways, such as the Cisco VG248 Analog Phone Gateway


    正确答案： A
    解析： 暂无解析

  • 第20题：

    多选题
    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


    正确答案： C,E
    解析： 暂无解析

  • 第21题：

    单选题
    What are two steps that are taken when a router converts a voice signal from analog to digital form？（）
    A

     sampling

    B

     packetization

    C

     quantization

    D

     serialization


    正确答案： A
    解析： 暂无解析

  • 第22题：

    单选题
    Which statement is true about the capabilities of a voice gateway router？（）
    A

    voice gateways with analog interfaces need a gatekeeper to convert analog signals into digital format before voice is encapsulated into IP packets

    B

    voice gateways need a gatekeeper to interconnect the VoIP networks the PSTN network

    C

    voice gateways with Cisco Unified CallManager Express （CME） can permanently act as a call agent for IP phones

    D

    voice gateways equipped with a DSP module can take the role of the call agent during WAN failure.


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    Refer to the exhibit. Which statement is true about a voice VLAN？（）
    A

    Physically the voice network and the data network are separate

    B

    The voice traffic will normally be on a different IP subnet than will the data traffic

    C

    End user intervention is necessary to place the phone into the proper VLAN

    D

    The same security policy should be implemented for both voice and data traffic

    E

    The data VLAN must be configured as the native VLAN


    正确答案： B
    解析： 暂无解析

相关内容