单选题Which sequence of messages demonstrates the communications between the LAC and LNS when theyestablish an L2TP session?（）A Incoming Call Reply, Incoming Call Request, Incoming Call ConnectedB Incoming Call Reply, Incoming Call Connected, Incoming Call R

题目
单选题
Which sequence of messages demonstrates the communications between the LAC and LNS when theyestablish an L2TP session?（）
A

Incoming Call Reply, Incoming Call Request, Incoming Call Connected

B

Incoming Call Reply, Incoming Call Connected, Incoming Call Request

C

Incoming Call Request, Incoming Call Reply, Incoming Call Connected

D

Incoming Call Request, Incoming Call Connected, Incoming Call Reply

相似考题

1.Which sequence of messages demonstrates the communications between the LAC and LNS when theyestablish an L2TP session?()A.Incoming Call Reply, Incoming Call Request, Incoming Call ConnectedB.Incoming Call Reply, Incoming Call Connected, Incoming Call RequestC.Incoming Call Request, Incoming Call Reply, Incoming Call ConnectedD.Incoming Call Request, Incoming Call Connected, Incoming Call Reply

2.ZLB（Zero-Length Bod）消息是一个只有L2TP头的控制消息，其作用是作为一个明确应答，以确保控制消息的可靠传递。以下四种情况中，LNS不发送ZLB消息给LAC作为应答的有（）。A、LNS收到LAC发送CDN（Call-Disconnect-Notif，呼叫断开通知）消息后B、LNs收到LAC发连的ICCN（Incoming-Call-Connectea，呼叫已连接）消息后C、LNS收到LAC发送的Hello控制消息后D、LNS收到LAC发连的StopCCN（scop-Control-Connection-Notiflcation）；消息后

3.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.

4.When you enter the interface command auto qos voip cisco－phone on a port at the edge of a network,how does the Cisco Catalyst switch detect if a Cisco IP Phone is connected to the port?()A. by snooping the CoS marking on the incoming framesB. by using RTP hello messages between the switch port and the Cisco IP PhoneC. by using CDPD. by using DHCP snoopingE. by snooping the incoming 802.1Q VLAN tag

更多“单选题Which sequence of messages demonstrates the communications between the LAC and LNS when theyestablish an L2TP session?（）A Incoming Call Reply, Incoming Call Request, Incoming Call ConnectedB Incoming Call Reply, Incoming Call Connected, Incoming Call R”相关问题

  • 第1题：

    When you enter the interface command auto qos voip cisco-phone on a port at the edge of a network,how does the Cisco Catalyst switch detect if a Cisco IP Phone is connected to the port?（）

    • A、by snooping the CoS marking on the incoming frames
    • B、by using RTP hello messages between the switch port and the Cisco IP Phone
    • C、by using CDP
    • D、by using DHCP snooping
    • E、by snooping the incoming 802.1Q VLAN tag

    正确答案:C

  • 第2题：

    对于一个从中继发起的呼叫，到达MSC时是由哪个INCOMING CALL CONTROL控制（）

    • A、IC1PRB
    • B、IC2PRB
    • C、IC3PRB
    • D、IC4PRB

    正确答案:C

  • 第3题：

    L2TP建立隧道时使用的消息有（）

    • A、SCCRQ（Session-Control-Connecting-Request）
    • B、SCCRP（Session-Control-Connecting-Reply）
    • C、ICRQ（Incoming-Call-Request）
    • D、ICRP（Incoming-Call-Reply）

    正确答案:A,B

  • 第4题：

    When onsite repairing a printer the technicians cell phone rings and it is a personal call， how should the technician handle this？（）

    • A、Answer the call and talk to your friend at the customer site.
    • B、Answer the call and tell the friend you will call them later.
    • C、Let it go to voicemail， call them back between service calls.
    • D、Let it ring and call the friend back when the customer leaves.

    正确答案:C

  • 第5题：

    In a VoIP network， which three call signaling protocols are supported by the Cisco CallManager for call setup， call maintenance， and call teardown？ （）

    • A、 H·323
    • B、 UDP
    • C、 RTP
    • D、 TCP
    • E、 Media Gateway Control Protocol （MGCP）
    • F、 session initiation protocol （SIP）

    正确答案:A,E,F

  • 第6题：

    The above bgp configuration has what effect on the configured router？（）

    • A、Allows incoming TCP connections destined to port 179
    • B、Allows incoming TCP connections sourced from port 179
    • C、Allows incoming TCP connections from 1.1.1.1 and destined to，or sourced from port 179
    • D、Allows incoming TCP connections from 1.1.1.1 that are destined to port 179
    • E、Allows incoming TCP connections from 1.1.1.1 that are sourced from port 179

    正确答案:D

  • 第7题：

    Which two are characteristics of the Intercepting Filter pattern？（）

    • A、 it provides centralized request handling for incoming requests.
    • B、 It forces resource authentication to be distributed across web components.
    • C、 It reduces coupling between presentation-tier clients and underlying business services.
    • D、 It can be added and removed unobtrusively， without requiring changes to existing  code.
    • E、 It allows preprocessing and postprocessing on the incoming requests and outgoing  responses.

    正确答案:D,E

  • 第8题：

    多选题
    Which two are characteristics of the Intercepting Filter pattern？（）
    A

    it provides centralized request handling for incoming requests.

    B

    It forces resource authentication to be distributed across web components.

    C

    It reduces coupling between presentation-tier clients and underlying business services.

    D

    It can be added and removed unobtrusively， without requiring changes to existing  code.

    E

    It allows preprocessing and postprocessing on the incoming requests and outgoing  responses.


    正确答案： C,A
    解析： 暂无解析

  • 第9题：

    单选题
    Which sequence of messages demonstrates the communications between the LAC and LNS when theyestablish an L2TP session?（）
    A

    Incoming Call Reply, Incoming Call Request, Incoming Call Connected

    B

    Incoming Call Reply, Incoming Call Connected, Incoming Call Request

    C

    Incoming Call Request, Incoming Call Reply, Incoming Call Connected

    D

    Incoming Call Request, Incoming Call Connected, Incoming Call Reply


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    When you enter the interface command auto qos voip cisco-phone on a port at the edge of a network, how does the Cisco Catalyst switch detect if a Cisco IP Phone is connected to the port? （）
    A

    by snooping the CoS marking on the incoming frames

    B

    by using RTP hello messages between the switch port and the Cisco IP Phone

    C

    by using CDP

    D

    by using DHCP snooping

    E

    by snooping the incoming 802.1Q VLAN tag


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    While accessing the Internet in an external environment (i.e. while traveling), a Windows 7 firewall hould be set to which of the following?（）
    A

    Block incoming and outgoing connections

    B

    Turned off or disabled

    C

    Block outgoing connections

    D

    Block incoming connections


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    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 processing

    B

    single site with distributed call processing

    C

    multisite with centralized call processing

    D

    multisite with distributed call processing


    正确答案： A
    解析： 暂无解析

  • 第13题：

    The Acme company has determined that during its busiest hours， the average number of internal VoIP calls across the WAN link is four （4）. Since this is an average， the WAN link has been sized for six （6） calls with no call admission control. What will happen when a seventh call is attempted across the WAN link？ （）

    • A、the seventh call is routed via the PSTN
    • B、the call is denied and the original six （6） calls remain
    • C、the call is completed and the first call is dropped
    • D、the call is completed， but all calls have quality issues
    • E、the call is completed but the seventh call has quality issues

    正确答案:D

  • 第14题：

    对于从BSC控制的基站下发起的呼叫到达MSC时是由哪个INCOMING CALL CONTROL控制（）

    • A、IC1PRB
    • B、IC2PRB
    • C、IC3PRB
    • D、IC4PRB

    正确答案:B

  • 第15题：

    Which sequence of messages demonstrates the communications between the LAC and LNS when theyestablish an L2TP session?（）

    • A、Incoming Call Reply, Incoming Call Request, Incoming Call Connected
    • B、Incoming Call Reply, Incoming Call Connected, Incoming Call Request
    • C、Incoming Call Request, Incoming Call Reply, Incoming Call Connected
    • D、Incoming Call Request, Incoming Call Connected, Incoming Call Reply

    正确答案:C

  • 第16题：

    Which Cisco UCS feature enables the administrator to send specific functional data using call home?（）

    • A、call home port groups
    • B、call home alert groups
    • C、call home threshold groups
    • D、call home profiles

    正确答案:B

  • 第17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18题：

    While accessing the Internet in an external environment (i.e. while traveling), a Windows 7 firewall hould be set to which of the following?（）

    • A、Block incoming and outgoing connections
    • B、Turned off or disabled
    • C、Block outgoing connections
    • D、Block incoming connections

    正确答案:D

  • 第19题：

    当按下客舱前/后呼叫钮时，相应的乘务员面版上显示（）

    • A、CAPTAIN CALL
    • B、COCKPIT CALL
    • C、INCOMING CALL

    正确答案:A

  • 第20题：

    单选题
    The Acme company has determined that during its busiest hours， the average number of internal VoIP calls across the WAN link is four （4）. Since this is an average， the WAN link has been sized for six （6） calls with no call admission control. What will happen when a seventh call is attempted across the WAN link？ （）
    A

    the seventh call is routed via the PSTN

    B

    the call is denied and the original six （6） calls remain

    C

    the call is completed and the first call is dropped

    D

    the call is completed， but all calls have quality issues

    E

    the call is completed but the seventh call has quality issues


    正确答案： B
    解析： 暂无解析

  • 第21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.


    正确答案： D
    解析： 暂无解析

  • 第22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 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： C
    解析： 暂无解析

  • 第23题：

    单选题
    When onsite repairing a printer the technicians cell phone rings and it is a personal call， how should the technician handle this？（）
    A

    Answer the call and talk to your friend at the customer site.

    B

    Answer the call and tell the friend you will call them later.

    C

    Let it go to voicemail， call them back between service calls.

    D

    Let it ring and call the friend back when the customer leaves.


    正确答案： C
    解析： 暂无解析

  • 第24题：

    单选题
    The above bgp configuration has what effect on the configured router？（）
    A

    Allows incoming TCP connections destined to port 179

    B

    Allows incoming TCP connections sourced from port 179

    C

    Allows incoming TCP connections from 1.1.1.1 and destined to，or sourced from port 179

    D

    Allows incoming TCP connections from 1.1.1.1 that are destined to port 179

    E

    Allows incoming TCP connections from 1.1.1.1 that are sourced from port 179


    正确答案： D
    解析： 暂无解析

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