更多“多选题What are the four fields in an MPLS label?()AversionBexperimentalClabelDprotocolETTLFbottom-of-stack indicato”相关问题
  • 第1题:

    What are the four fields in an MPLS label?()

    • A、version
    • B、experimental
    • C、label
    • D、protocol
    • E、TTL
    • F、bottom-of-stack indicato

    正确答案:B,C,E,F

  • 第2题:

    As a network administrator, you are required to deploy MPLS technology. During the deployment, it is recommended to apply conditional label advertising. What is most probably the reason for that?()

    • A、to enable label switching on the frame mode interface
    • B、to restrict MPLS availability to predefined time periods
    • C、to restrict end users from seeing the routers in the MPLS network
    • D、to restrict label switching to a limited number of networks

    正确答案:D

  • 第3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4题:

    What IOS commands display MPLS label mapping on an LSR?()

    • A、Show mpls forwading-table
    • B、Show mpls ldp bindings
    • C、Show mpls ldp neighbor detail
    • D、Show mpls ldp parameters
    • E、Show mpls ldp discovery

    正确答案:B

  • 第5题:

    An ERX Edge Router is operating in an MPLS network using interface label space.What is used to make a forwarding decision?()

    • A、EXP bits
    • B、VPI / VCI
    • C、shim header
    • D、SNAP header

    正确答案:B

  • 第6题:

    You use Microsoft .NET Framework 4 to create a Windows Presentation Framework (WPF) application. You plan to create a custom control that contains four text input fields. Each of the text input fields within the control will contain a label. You need to ensure that the text input fields within the control can be validated by using a regular expression validator. Which class should you inherit from?()

    • A、 TextBox
    • B、 TextElement
    • C、 UIElement
    • D、 UserControl

    正确答案:D

  • 第7题:

    多选题
    Which three of the following steps are mandatory when configuring MPLS on Cisco IOS? ()(Choose three.)
    A

    start LDP

    B

    enable CEF switching

    C

    configure the MPLS ID

    D

    disable IP TTL propagation

    E

    configure conditional label advertising

    F

    enable label switching on frame mode interfaces


    正确答案: F,D
    解析: 暂无解析

  • 第8题:

    单选题
    What is the label for MPLS over ATM?()
    A

    VPI 16

    B

    DLCI

    C

    VPI and VCI

    D

    circuit number

    E

    PVC and SVC


    正确答案: E
    解析: 暂无解析

  • 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:

    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11题:

    单选题
    What IOS commands display MPLS label mapping on an LSR?()
    A

    Show mpls forwading-table

    B

    Show mpls ldp bindings

    C

    Show mpls ldp neighbor detail

    D

    Show mpls ldp parameters

    E

    Show mpls ldp discovery


    正确答案: A
    解析: 暂无解析

  • 第12题:

    单选题
    An ERX Edge Router is operating in an MPLS network using interface label space.What is used to make a forwarding decision?()
    A

    EXP bits

    B

    VPI / VCI

    C

    shim header

    D

    SNAP header


    正确答案: C
    解析: 暂无解析

  • 第13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14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15题:

    What is used as label in cell-based MPLS ?()

    • A、VPI
    • B、VCI
    • C、VPI and VCI
    • D、Specific 4 bytes label
    • E、None of above

    正确答案:C

  • 第16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17题:

    What are two purposes of the RSVP signaling protocol when configuring MPLS Label-Switched Paths (LSPs)? ()(Choose two.)

    • A、to perform a label push operation
    • B、to track the status of signaled LSPs
    • C、to perform longest-match route lookups
    • D、to reserve resources, such as labels and path information

    正确答案:B,D

  • 第18题:

    多选题
    MPLS label headers for packet media consist of().
    A

    Version

    B

    Label

    C

    COS/EXP

    D

    TTL

    E

    S flag


    正确答案: E,A
    解析: 暂无解析

  • 第19题:

    多选题
    Which four of these are MPLS label header fields? ()
    A

    Label

    B

    VPI VCI

    C

    EXP

    D

    TTL

    E

    FCS

    F

    S flag


    正确答案: C,A
    解析: 暂无解析

  • 第20题:

    多选题
    What are two purposes of the RSVP signaling protocol when configuring MPLS Label-Switched Paths (LSPs)? ()(Choose two.)
    A

    to perform a label push operation

    B

    to track the status of signaled LSPs

    C

    to perform longest-match route lookups

    D

    to reserve resources, such as labels and path information


    正确答案: D,B
    解析: 暂无解析

  • 第21题:

    多选题
    What are the four fields in an MPLS label?()
    A

    version

    B

    experimental

    C

    label

    D

    protocol

    E

    TTL

    F

    bottom-of-stack indicato


    正确答案: F,C
    解析: 暂无解析

  • 第22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23题:

    单选题
    As a network administrator, you are required to deploy MPLS technology. During the deployment, it is recommended to apply conditional label advertising. What is most probably the reason for that?()
    A

    to enable label switching on the frame mode interface

    B

    to restrict MPLS availability to predefined time periods

    C

    to restrict end users from seeing the routers in the MPLS network

    D

    to restrict label switching to a limited number of networks


    正确答案: D
    解析: 暂无解析

  • 第24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