There is MPLS VPN traffic traversing through a TE intermediate router. What is the MPLS packet labelstack sequence (from outer to inner) for the VPN traffic on this router?()A、TE label, IGP label, VPN labelB、IGP label, TE label, VPN labelC、TE label, VPN l

题目

There is MPLS VPN traffic traversing through a TE intermediate router. What is the MPLS packet labelstack sequence (from outer to inner) for the VPN traffic on this router?()

  • A、TE label, IGP label, VPN label
  • B、IGP label, TE label, VPN label
  • C、TE label, VPN label, IGP label
  • D、VPN label, IGP label, TE label
  • E、IGP label, VPN label, TE label

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更多“There is MPLS VPN traffic traversing through a TE intermediate router. What is the MPLS packet labelstack sequence (from outer to inner) for the VPN traffic on this router?()A、TE label, IGP label, VPN labelB、IGP label, TE label, VPN labelC、TE label, VPN l”相关问题
  • 第1题:

    MPLS VPN骨干网中的P路由器在转发VPN数据包时()。

    • A、P路由器有VPN路由,它按照VPN路由器表进行转发
    • B、P路由器没有VPN路由,它根据VPN数据包的目的IP地址查找IGP路由表进行转发
    • C、P路由器没有VPN路由,它根据上层label进行转发
    • D、P路由器没有VPN路由,不同的VPN有不同的label,所以它根据VPN label转发

    正确答案:B

  • 第2题:

    Which option describes the incorrect usage of the Label Distribution method?()

    • A、LDP is primarily used in internal networks of MPLS-VPN providers.
    • B、MP-BGP is used for label distribution for VPN customer routes.
    • C、Directed LDP is used for label distribution in L2-VPN Attachement Circuits.
    • D、MP-BGP is used for label distribution in MPLS Traffic Engineered networks.

    正确答案:D

  • 第3题:

    Using more than one label on a single packet is required in what context?()

    • A、MPLS TE
    • B、MPLS VPN
    • C、When CEF switching and Label switching is done
    • D、In all the above circumstances

    正确答案:B

  • 第4题:

    Which two steps are required for a Kompella Layer 2 VPN?()

    • A、Configure a site id for each ce.
    • B、Configure a VPN label for each VPN.
    • C、Configure a MP-bgp session to each pe.
    • D、Configure an Extended LDP Session to each pe.

    正确答案:A,C

  • 第5题:

    A router receives a packet from a neighbor with an MPLS shim header value of 0.What does the router do with this packet?()

    • A、It performs a label pop operation and an IP lookup.
    • B、It performs a label swap operation and an IP lookup.
    • C、It sends an error message toward the egress router.
    • D、It sends an error message toward the ingress router.

    正确答案:A

  • 第6题:

    MPLS label headers for packet media consist of().

    • A、Version
    • B、Label
    • C、COS/EXP
    • D、TTL
    • E、S flag

    正确答案:B,C,D,E

  • 第7题:

    Which three statements about MPLS traffic engineering (MPLS TE) are true? ()

    • A、MPLS TE supports admission control
    • B、MPLS TE tunnel traffic is a link attribute to compute the TE tunnel path
    • C、MPLS TE uses BGP extension to advertise link attributes
    • D、MPLS TE provides protection capability
    • E、MPLS TE uses RSVP to establish LSP

    正确答案:A,D,E

  • 第8题:

    You are designing a strategy to allow users to gain VPN access to the internal network.  What should you do?()

    • A、 Allow all inbound VPN traffic to pass through the internal firewall and the perimeter firewall.
    • B、 Allow all inbound VPN traffic to pass through the perimeter firewall only.
    • C、 Allow all VPN traffic from the source IP address of 131.107.1.14 to pass through the internal firewall.
    • D、 Allow all VPN traffic from the source IP address of 191.168.1.0/24 to pass through the perimeter firewall.

    正确答案:B

  • 第9题:

    单选题
    What is the action of "pop" in the context of MPLS switching?()
    A

    It removes the top label in the MPLS label stack.

    B

    It adds a top label in MPLS label stack.

    C

    It replaces the top label in the MPLS label stack with another value.

    D

    It replaces the top label in the MPLS label stack with a set of labels.

    E

    None of above.


    正确答案: C
    解析: 暂无解析

  • 第10题:

    多选题
    Which four services use the inner labels of an MPLS label stack? ()
    A

    MPLS VPN

    B

    switching path in MPLS core

    C

    Cisco MPLS Traffic Engineering and Fast Reroute

    D

    MPLS over ATM

    E

    VPN over Traffic Engineering core

    F

    any transport over MPLS


    正确答案: A,F
    解析: 暂无解析

  • 第11题:

    单选题
    A router receives a packet from a neighbor with an MPLS shim header value of 0.What does the router do with this packet?()
    A

    It performs a label pop operation and an IP lookup.

    B

    It performs a label swap operation and an IP lookup.

    C

    It sends an error message toward the egress router.

    D

    It sends an error message toward the ingress router.


    正确答案: C
    解析: 暂无解析

  • 第12题:

    单选题
    There is MPLS VPN traffic traversing through a TE intermediate router. What is the MPLS packet labelstack sequence (from outer to inner) for the VPN traffic on this router?()
    A

    TE label, IGP label, VPN label

    B

    IGP label, TE label, VPN label

    C

    TE label, VPN label, IGP label

    D

    VPN label, IGP label, TE label

    E

    IGP label, VPN label, TE label


    正确答案: E
    解析: 暂无解析

  • 第13题:

    MPLS VPN网络中哪个设备分配了VPN label()

    • A、出口的CE设备
    • B、入口的CE设备
    • C、出口的PE设备
    • D、入口的PE设备

    正确答案:C

  • 第14题:

    In the context of MPLS,what is the correct action to be performed when an aggregate label is received ?()

    • A、It adds the VPN label into the top label in the MPLS label stack
    • B、It replaces the top label in the MPLS label stack with a VPN label and propagates
    • C、It replaces the bottom label in the MPLS label stack with a VPN label and propagates
    • D、It removes the top label in the MPLS label stack and does a Layer 3 lookup on underlying IP packets
    • E、None of above

    正确答案:D

  • 第15题:

    What is the action of "pop" in the context of MPLS switching?()

    • A、It removes the top label in the MPLS label stack.
    • B、It adds a top label in MPLS label stack.
    • C、It replaces the top label in the MPLS label stack with another value.
    • D、It replaces the top label in the MPLS label stack with a set of labels.
    • E、None of above.

    正确答案:A

  • 第16题:

    MPLS需要LDP/TDP,是因为:()

    • A、MPLS可以需要LDP/TDP,也可以不需要,是可以选择的
    • B、LDP/TDP是转发机制,用于转发带标记数据包(Labeled packet)
    • C、LDP/TDP用于分配MPLS VPN的标记(label)
    • D、LDP/TDP用于交换分配给IP目的的标记(label)

    正确答案:D

  • 第17题:

    当VPN FRR与LDP FRR/MPLS TE FRR等技术在网络中组合使用时,当核心链路故障发生的时候首先触发VPN FRR技术。


    正确答案:错误

  • 第18题:

    Which four services use the inner labels of an MPLS label stack? ()

    • A、MPLS VPN
    • B、switching path in MPLS core
    • C、Cisco MPLS Traffic Engineering and Fast Reroute
    • D、MPLS over ATM
    • E、VPN over Traffic Engineering core
    • F、any transport over MPLS

    正确答案:A,C,E,F

  • 第19题:

    Which two routes do P routers see by default in a BGP MPLS VPN configuration? ()(Choose two.)

    • A、IGP routes advertised by P routers
    • B、IGP routes advertised by PE routers
    • C、VPN routes advertised by PE routers
    • D、VPN routes advertised by CE routers

    正确答案:A,B

  • 第20题:

    判断题
    当VPN FRR与LDP FRR/MPLS TE FRR等技术在网络中组合使用时,当核心链路故障发生的时候首先触发VPN FRR技术。
    A

    B


    正确答案:
    解析: 暂无解析

  • 第21题:

    单选题
    In the context of MPLS,what is the correct action to be performed when an aggregate label is received ?()
    A

    It adds the VPN label into the top label in the MPLS label stack

    B

    It replaces the top label in the MPLS label stack with a VPN label and propagates

    C

    It replaces the bottom label in the MPLS label stack with a VPN label and propagates

    D

    It removes the top label in the MPLS label stack and does a Layer 3 lookup on underlying IP packets

    E

    None of above


    正确答案: D
    解析: 暂无解析

  • 第22题:

    单选题
    You are designing a strategy to allow users to gain VPN access to the internal network.  What should you do?()
    A

     Allow all inbound VPN traffic to pass through the internal firewall and the perimeter firewall.

    B

     Allow all inbound VPN traffic to pass through the perimeter firewall only.

    C

     Allow all VPN traffic from the source IP address of 131.107.1.14 to pass through the internal firewall.

    D

     Allow all VPN traffic from the source IP address of 191.168.1.0/24 to pass through the perimeter firewall.


    正确答案: B
    解析: 暂无解析

  • 第23题:

    单选题
    Which option describes the incorrect usage of the Label Distribution method?()
    A

    LDP is primarily used in internal networks of MPLS-VPN providers.

    B

    MP-BGP is used for label distribution for VPN customer routes.

    C

    Directed LDP is used for label distribution in L2-VPN Attachement Circuits.

    D

    MP-BGP is used for label distribution in MPLS Traffic Engineered networks.


    正确答案: A
    解析: 暂无解析