When a BGP router is not capable of understanding 4-byte AS numbers， it will see 4-byte AS numbers as a special， reserved， 2-byte AS number in the AS path. Which 2-byte AS number is this reserved one？（）A、00000B、12345C、23456D、65000E、99999

题目

When a BGP router is not capable of understanding 4-byte AS numbers， it will see 4-byte AS numbers as a special， reserved， 2-byte AS number in the AS path. Which 2-byte AS number is this reserved one？（）

  • A、00000
  • B、12345
  • C、23456
  • D、65000
  • E、99999
相似考题

1.Which action does a BGP speaker take when it detects that the reset state bit is set in an openmessage?()A. It tears down the BGP session.B. It sends a restart message to the peer.C. It marks all routes from that peer as stale.D. It sends a BGP refresh message to the peer

2.Which action occurs when the static route 10.0.55.2／32 is evaluated by the policy main－policy? ()A. The route is advertised into BGP.B. The route is suppressed from BGP.C. The route is advertised into BGP and goes only one hop.D. The route is advertised into BGP and can only propagate throughout the neighboring AS.

3.Which statement would prevent the sending of redundant route advertisements when your routereflector cluster is fully meshed?()A. set protocols bgp group mygroup path-selection cisco-non-deterministic;B. set protocols bgp group i-bgp no-aggregator-id;C. set protocols bgp group mygroup no-client-reflect;D. set protocols bgp group i-bgp damping;

4.When implementing BGP confederations, which configuration command establishes the globally unique AS number used with external peers outside your network?()A. bgp confederation asB. bgp confederation systemC. bgp confederation remote-asD. bgp confederation identifier

更多“When a BGP rou”相关问题

  • 第1题：

    In which three ways are C－BGP and E－BGP sessions similar?()

    A. Both are configured as type external.

    B. Both configurations use the peer-as command.

    C. Neither advertises the local-preference attribute.

    D. Both set next-hop self when advertising routes to peers.

    E. Both modify the AS-path attribute when advertising routes.


    参考答案：A, B, E

  • 第2题：

    Which BGP option i s required when load sharing over multiple equal － bandwidth parallel links from a single CE router to a single ISP router over eBGP?()

    A. eBGP Multipath

    B. eBGP Multihop

    C. BGP Synchronization

    D. Public AS numbers


    参考答案：B

  • 第3题：

    When the BGP path selection process is being performed on a Cisco router, which BGP attribute is used first when determining the best path?（）

    • A、local preference
    • B、MED
    • C、weight
    • D、or igin
    • E、next - hop
    • F、AS - path

    正确答案:C

  • 第4题：

    When BGP is used as the PE-CE routing protocol, which of these statements is correct?（）

    • A、On the CE router, PE neighbors must be configured in the VRF context on the CE router
    • B、On PE routers, the CE IBGP neighbors are configured in the global BGP configuration
    • C、On PE routers, the CE EBGP neighbors are configured in the VRF context
    • D、A separate BGP process must be used on the PE routers for CE routers so that they do not use the same BGP routing process as that used for the PE router's other provider neighbors

    正确答案:C

  • 第5题：

    Select the two answers that best describe the IP Event Dampening feature（）

    • A、The IP Event Dampening uses exponential decay mechanism to suppress the effects of excessive interface flapping
    • B、BGP Operators use IP Event Dampening to suppress the effect of unstable internet Routes
    • C、The IP Event Dampening works with routing protocols by stopping the announcement of dampened interface subnets in their updates
    • D、When IP Event Dampened internet routes resch their re-use limit BGP installs them in the Routing Table and announces them to other BGP speakers

    正确答案:A,C

  • 第6题：

    By default, what does a Juniper Networks router set the BGP origin code to when originating theroute?（）

    • A、IGP (Value 0)
    • B、EGP (Value 1)
    • C、Incomplete (Value 2)
    • D、It depends on the route's source.

    正确答案:A

  • 第7题：

    Which action does a BGP speaker take when it detects that the reset state bit is set in an openmessage?（）

    • A、It tears down the BGP session.
    • B、It sends a restart message to the peer.
    • C、It marks all routes from that peer as stale.
    • D、It sends a BGP refresh message to the peer

    正确答案:C

  • 第8题：

    单选题
    Which statement describes the purpose of BGP route damping?（）
    A

    Avoid interface bandwidth saturation.

    B

    Drop BGP routes when the routing-table becomes full.

    C

    Remove unnecessary route attributes when not in use.

    D

    Limit the effects of a flaping interface on route removal and readvertisement.


    正确答案： C
    解析： 暂无解析

  • 第9题：

    多选题
    Which two statements about the bgp deterministic-med and bgp always-compare-med commands are true？（）
    A

    The bgp deterministic-med command is used to influence the BGP route selection process to cause the MED attribute to have higher precedence over the AS path length

    B

    The bgp always-compare command is used to influence the BGP route selection process to cause the MED attribute to have higher precedence over the AS path system

    C

    Enabling the bgp deterministic-med command ensures the comparison of the MED variable when choosing routes advertised by different peers in the same autonomous system.

    D

    Enabling the bgp always-compare-med command ensures the comparison of the MED variable for paths from neighbors in different autonomous systems.

    E

    The bgp deterministic-med and bgp always-compare-med commands are enabled by defult.


    正确答案： C,A
    解析： 暂无解析

  • 第10题：

    单选题
    When BGP is used as the PE-CE routing protocol, which of these statements is correct?（）
    A

    On the CE router, PE neighbors must be configured in the VRF context on the CE router

    B

    On PE routers, the CE IBGP neighbors are configured in the global BGP configuration

    C

    On PE routers, the CE EBGP neighbors are configured in the VRF context

    D

    A separate BGP process must be used on the PE routers for CE routers so that they do not use the same BGP routing process as that used for the PE router's other provider neighbors


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    Which statement would prevent the sending of redundant route advertisements when your routereflector cluster is fully meshed?（）
    A

    set protocols bgp group mygroup path-selection cisco-non-deterministic;

    B

    set protocols bgp group i-bgp no-aggregator-id;

    C

    set protocols bgp group mygroup no-client-reflect;

    D

    set protocols bgp group i-bgp damping;


    正确答案： C
    解析： 暂无解析

  • 第12题：

    多选题
    A router is running BGP and receives more than one route for a particular prefix. Assume all the routes for this prefix have the same attributes. Which three path features would be reasons be for the rou ter to ignore some of the routes and not consider them as candidates for the best path?（）
    A

    paths from an internal BGP (iBGP) neighbor if the local autonomous system (AS) appears in the AS_PATH

    B

    paths for which the NEXT_HOP is inaccess ible

    C

    paths from an external BGP (eBGP) neighbor if the local autonomous system (AS) appears in the AS_PATH

    D

    paths for which the NEXT_HOP is accessible

    E

    paths that are marked as synchronized in the show ip bgp output

    F

    paths that are marked as  not synchronized in the show ip bgp output


    正确答案： D,C
    解析： 暂无解析

  • 第13题：

    A router is running BGP and receives more than one route for a particular prefix. Assume all the routes for this prefix have the same attributes.Which three path features would be reasons be for the rou ter to ignore some of the routes and not consider them as candidates for the best path?（）

    A. paths from an internal BGP (iBGP) neighbor if the local autonomous system (AS) appears in the AS_PATH

    B. paths for which the NEXT_HOP is inaccess ible

    C. paths from an external BGP (eBGP) neighbor if the local autonomous system (AS) appears in the AS_PATH

    D. paths for which the NEXT_HOP is accessible

    E. paths that are marked as synchronized in the show ip bgp output

    F. paths that are marked as not synchronized in the show ip bgp output


    参考答案：B, C, F

  • 第14题：

    When the BGP path selection process is being performed on a Cisco router, which BGP attribute is used first when determining the best path?()

    A. local preference

    B. MED

    C. weight

    D. or igin

    E. next - hop

    F. AS - path


    参考答案：C

  • 第15题：

    Which BGP option i s required when load sharing over multiple equal - bandwidth parallel links from a single CE router to a single ISP router over eBGP?（）

    • A、eBGP Multipath
    • B、eBGP Multihop
    • C、BGP Synchronization
    • D、Public AS numbers

    正确答案:B

  • 第16题：

    Which three statements about the route target （RT） are true？ （）

    • A、The RT is a BGP extended community.
    • B、The RT is an 8-byte field that is prefixed to an IPv4 address to make it a unique VPNv4 address.
    • C、When a VPN route that is learned from a CE router is injected into BGP， one or more RTs are associated with it
    • D、The distribution of VPN routing information is controlled through the use of VPN RTs
    • E、When a VPN route that is learned from a CE router is injected into BGP， there is always one RT that is associated with it.

    正确答案:A,C,D

  • 第17题：

    Which IOS features are used to avoid Routing loops when dynamic Routing protocols are used betweenPE and CE in MPLS-VPN networks？（）

    • A、Site Of Origin SOO.
    • B、SHAM links with OSPF
    • C、BGP cost community
    • D、BGP feature allow-as in
    • E、RPF Reverse Path forwarding.
    • F、Access-list Control in Distance Vector protocol like RIP and EIGRP.

    正确答案:A,F

  • 第18题：

    When implementing BGP confederations, which configuration command establishes the globally unique AS number used with external peers outside your network?（）

    • A、bgp confederation as
    • B、bgp confederation system
    • C、bgp confederation remote-as
    • D、bgp confederation identifier

    正确答案:D

  • 第19题：

    单选题
    Which action occurs when the BGP route 20.1.0.0/16 is evaluated by the policy expression？（） [editpolicy-options]  policy-statementmy-filter {  term-first{  from{  route-filter192.168.0.0/16orlongeraccept；  route-filter 192.168.1.0/24 exact accept；  route-filter 192.168.2.0/24 exact；  }  then{  metric10；  accept；  }  termsecond {  then{  metric20；  accept；  }}  policy-statementmain {  termchange-attributes  from{  policymy-filter；  }  thenaccept；  }  termdefault {  thenreject；  }}  [editprotocols]  bgp{  exportmain；  }
    A

    The route is not advertised into BGP

    B

    The route is advertised into BGP with metric 10.

    C

    The route is advertised into BGP with metric 20.

    D

    The route is advertised into BGP with default metric.


    正确答案： D
    解析： 暂无解析

  • 第20题：

    单选题
    Enterprise Router R1, in ASN 1, connects to ISP Router I1, ASN 2, using eBGP. There are two parallel serial links between the two rou ters. The implementation plan calls for each router to base their BGP TCP connection on their respective loopback1 interfaces, with IP addresses 1.1.1.1 and 2.2.2.2, respectively. Which of the following commands would not be part of a working eBGP confi guration on Router R1?（）
    A

    router bgp 1

    B

    neighbor 2.2.2.2 remote- as 2

    C

    neighbor 2.2.2.2 update - source loopback1

    D

    neighbor 2.2.2.2 multihop 2


    正确答案： C
    解析： 暂无解析

  • 第21题：

    多选题
    In which three ways are C-BGP and E-BGP sessions similar?（）
    A

    Both are configured as type external.

    B

    Both configurations use the peer-as command.

    C

    Neither advertises the local-preference attribute.

    D

    Both set next-hop self when advertising routes to peers.

    E

    Both modify the AS-path attribute when advertising routes.


    正确答案： E,B
    解析： 暂无解析

  • 第22题：

    单选题
    Given the following policy: Which action occurs when the static route 192.168.0.0/25 is evaluated by the policy main-policy?（）
    A

    The route is not advertised into BGP.A.The route is not advertised into BGP.

    B

    The route is advertised into BGP with metric 10.B.The route is advertised into BGP with metric 10.

    C

    The route is advertised into BGP with metric 20.C.The route is advertised into BGP with metric 20.

    D

    The route is advertised into BGP with default metric.D.The route is advertised into BGP with default metric.


    正确答案： C
    解析： 暂无解析

  • 第23题：

    单选题
    Which statement would prevent the sending of redundant route advertisements when your route reflector cluster is fully meshed？（）
    A

    set protocolbgpgroupmygrouppath-selectioncisco-non-deterministic；

    B

    set protocolbgpgroup i-bgp n-aggreator-id；

    C

    set protocolbgpgroupmygroup no-client-reflect；

    D

    set protocolbgpgroup i-bgp damping


    正确答案： C
    解析： 暂无解析

  • 第24题：

    单选题
    Which action does a BGP speaker take when it detects that the reset state bit is set in an openmessage?（）
    A

    It tears down the BGP session.

    B

    It sends a restart message to the peer.

    C

    It marks all routes from that peer as stale.

    D

    It sends a BGP refresh message to the peer


    正确答案： C
    解析： 暂无解析

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