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 bitsB VPI / VCIC shim headerD SNAP header

题目
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

相似考题

1.A user is connected on a DSL line and is using a PPP over Ethernet service. Which network device encapsulates the datagram inside of an ATM header?()A.DSLAMB.DSL modemC.ERX Edge RouterD.customer workstation

2.What is the default Quality of Service traffic class used by the ERX Edge Router?()A. bronze forwardingB. assured forwardingC. expedited forwardingD. best effort forwarding

3.An ERX Edge Router is operating in an MPLS network using interface label space.What is used to make a forwarding decision?()A. EXP bitsB. VPI / VCIC. shim headerD. SNAP header

4.Which configuration command allows the ERX Edge Router to perform Unicast Reverse Path Forwarding lookups on all packets received on an IP interface?()A. ip sa-validateB. ip split-horizonC. ip access-routesD. ip filter-options

参考答案和解析
正确答案： C
解析： 暂无解析
更多“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 bitsB VPI / VCIC shim headerD SNAP header”相关问题

  • 第1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.


    参考答案：A

  • 第2题：

    A user is connected on a DSL line and is using a PPP over Ethernet service.Which network device strips the ATM header from the datagram and investigates the PPP header?()

    A.DSLAM

    B.DSL modem

    C.ERX Edge Router

    D.customer workstation


    参考答案：C

  • 第3题：

    In a frame ，the MPLS label is imposed（）.

    • A、After the Layer3 header and before Layer2 header
    • B、After the Layer2 header and before Layer3 header
    • C、Within the Layer 3 header
    • D、Before the layer 2 header

    正确答案:B

  • 第4题：

    End users are failing to log in to the network. Which command is used on the ERX Edge Router to validate communications with the RADIUS server?（）

    • A、test ppp aaa
    • B、test aaa ppp
    • C、test radius user
    • D、test user radius

    正确答案:B

  • 第5题：

    What is the default Quality of Service traffic class used by the ERX Edge Router?（）

    • A、bronze forwarding
    • B、assured forwarding
    • C、expedited forwarding
    • D、best effort forwarding

    正确答案:D

  • 第6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7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8题：

    Which configuration command is used to make the ERX Edge Router an NTP server？（）

    • A、 set ntp-server
    • B、 set ntp server
    • C、 ntp-server enable
    • D、 ntp server enable

    正确答案:D

  • 第9题：

    A user is connected on a DSL line and is using a PPP over Ethernet service.Which network device strips the ATM header from the datagram and investigates the PPP header?（）

    • A、DSLAM
    • B、DSL modem
    • C、ERX Edge Router
    • D、customer workstation

    正确答案:C

  • 第10题：

    单选题
    End users are failing to log in to the network. Which command is used on the ERX Edge Router to validate communications with the RADIUS server?（）
    A

    test ppp aaa

    B

    test aaa ppp

    C

    test radius user

    D

    test user radius


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    Which configuration command allows the ERX Edge Router to perform Unicast Reverse Path Forwarding lookups on all packets received on an IP interface?（）
    A

    ip sa-validate

    B

    ip split-horizon

    C

    ip access-routes

    D

    ip filter-options


    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 a Bridged 1483 network, what Layer 2 encapsulations are passed between the DSL bridge and the ERX?()

    A. single ATM header

    B. single Ethernet header

    C. ATM header followed by a PPP header

    D. ATM header followed by an Ethernet header


    参考答案：D

  • 第14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:A,C,D,F

  • 第15题：

    Which configuration command allows the ERX Edge Router to perform Unicast Reverse Path Forwarding lookups on all packets received on an IP interface?（）

    • A、ip sa-validate
    • B、ip split-horizon
    • C、ip access-routes
    • D、ip filter-options

    正确答案:A

  • 第16题：

    Which protocol is used to transfer files to on the ERX Edge Router？（）

    • A、SCP
    • B、FTP
    • C、RCP
    • D、TFTP

    正确答案:B,D

  • 第17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18题：

    Which statement correctly describes the disabling of IP TTL propagation in an MPLS network？（）

    • A、The TTL field from the IP packet is copied into the TTL field of the MPLS label header at the ingress edge LSR
    • B、TTL propagation cannot be disabled in an MPLS domain
    • C、TTL propagation is only disabled on the ingress edge LSR
    • D、The TTL field of the MPLS label header is set to 255
    • E、The TTL field of the IP packet is set to 0

    正确答案:D

  • 第19题：

    A user is connected on a DSL line and is using a PPP over Ethernet service. Which network device encapsulates the datagram inside of an ATM header?（）

    • A、DSLAM
    • B、DSL modem
    • C、ERX Edge Router
    • D、customer workstation

    正确答案:B

  • 第20题：

    In a Bridged 1483 network, what Layer 2 encapsulations are passed between the DSL bridge and the ERX?（）

    • A、single ATM header
    • B、single Ethernet header
    • C、ATM header followed by a PPP header
    • D、ATM header followed by an Ethernet header

    正确答案:D

  • 第21题：

    单选题
    Which statement correctly describes the disabling of IP TTL propagation in an MPLS network？（）
    A

    The TTL field from the IP packet is copied into the TTL field of the MPLS label header at the ingress edge LSR

    B

    TTL propagation cannot be disabled in an MPLS domain

    C

    TTL propagation is only disabled on the ingress edge LSR

    D

    The TTL field of the MPLS label header is set to 255

    E

    The TTL field of the IP packet is set to 0


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    What is the default Quality of Service traffic class used by the ERX Edge Router?（）
    A

    bronze forwarding

    B

    assured forwarding

    C

    expedited forwarding

    D

    best effort forwarding


    正确答案： C
    解析： 暂无解析

  • 第23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24题：

    单选题
    Which configuration command is used to make the ERX Edge Router an NTP server？（）
    A

     set ntp-server

    B

     set ntp server

    C

     ntp-server enable

    D

     ntp server enable


    正确答案： C
    解析： 暂无解析

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