A router is running BGP and receives more than one route for

题目
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

参考答案和解析
正确答案: F,D
解析: 暂无解析
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相似问题和答案

第1题:

The fol lowing line of output was extracted from the output of the show ip bgp command on Router R1. Which of the following can be determined from this output?()Network Next Hop Metric LocPrf Weight Path* 130.1.1.0/28 1.1.1.1 0 1 2 3 4 i

A. The route is learne d from an eBGP peer

B. The route has no more than three ASNs in the AS_PatH

C. The route is the best route for this prefix

D. None of these facts can be positively determined by this output


参考答案:A

第2题:

Refer to the exhibit. When running OSPF, What would cause router A not to form an adjacency with router B?()

A.The loopback addresses are on different subnets

B.The value of the dead timers on the router are different

C.Route summarization is enabled on both routers

D.The process indentifier on router A is different than the process identifier on router B


参考答案:B

第3题:

Which router translates the Type 7 LSAs into Type 5 LSAs, according to RFC 1587 (OSPF NSSAOption) in an OSPF NSSA with more than one ABR?()

A. The router receiving the route translates the Type 7 LSA into a Type 5 LSA.

B. The ABR with the lowest router ID translates all Type 7 LSAs into Type 5 LSAs.

C. The ABR with the highest router ID translates all Type 7 LSAs into Type 5 LSAs.

D. All ABRs translate the Type 7 LSAs into Type 5 LSAs depending on which one has the lowest cost to the route.


参考答案:C

第4题:

You have a router running BGP for the MPLS network and OSPF for the local LAN network at the sales office. A route is being learned from the MPLS network that also exists on the OSPF local network. It is important that the router chooses the local LAN route being learned from the downstream switch running OSPF rather than the upstream BGP neighbor. Also, if the local OSPF route goes away, the BGP route needs to be used. What should be configured to make sure that the router will choose the LAN network as the preferred path?()

  • A、static route needs to be added
  • B、floating static route needs to be added
  • C、bgp backdoor command
  • D、ospf backdoor command

正确答案:C

第5题:

In BGP routing,what does the rule of synchronization mean?()

  • A、A BGP router can only advertise an EBGP learned route,provided that the route is an IGP route in the routing table.
  • B、A BGP router can only advertise an IBGP learned route,provided that the route is an IGP route in the routing table.
  • C、A BGP router can only advertise an IBGP learned route,provided that the route is an IGP route that is not in the routing table.
  • D、A BGP router can only advertise an EBGP learned route,provided that the route is a metric of 0 in the BGP table.

正确答案:B

第6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7题:

Router R1 learns two routes with BGP for prefix 200.1.0.0/16. Comparing the two routes, route 1 has a shorter AS_Path Length, smaller MED, the same Weight, and smaller Local PreferencE. Which of the following is true about Router R1's choice of best path for this prefix?()

  • A、Route 1 is the best route.
  • B、Route 2 is the best route.
  • C、The routes tie as best, but one will be picked to be placed in the routing table based on tiebreakers .
  • D、Neither route is considered best.

正确答案:B

第8题:

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.


参考答案:B

第9题:

You issue the command show process memory ∣ include BGP and notice that BGP is consuming alarge percentage of the router’s memory. Which of the following steps would result in lowering theamount of memory being consumed by BGP?(Choose all that apply.)()

  • A、Filter unneeded BGP routes
  • B、Run BGP on a different platform that already has more memory
  • C、Upgrade the router memory
  • D、Increase the BGP update timer
  • E、Compress the BGP table
  • F、Use a default route instead of maintaining a full BGP table

正确答案:A,C,F

第10题:

A router has two paths to reach another network in a different autonomous system. Neither route was generated by the local router and both routes have the same default weight an d local preference values. Which statement is true about how BGP would select the best path?()

  • A、To influence one route to be preferred, its default local preference value will be changed via the use of the command bgp default local - preference 50
  • B、Th e router will prefer the shortest autonomous system path
  • C、If the command bgp always - compare - med has been given, then the router will prefer the route with the highest MED
  • D、The router will prefer the route with the lower MED

正确答案:B

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