Router R1, in ASN 11, learns a BGP route from BGP peer R22 in ASN 22. R1 and then uses BGP to advertise the route to R2, also in ASN 11. What ASNs would you see in the BGP table on R2 for this route?（）A. 22B. 11C. 1D. None

题目

Router R1, in ASN 11, learns a BGP route from BGP peer R22 in ASN 22. R1 and then uses BGP to advertise the route to R2, also in ASN 11. What ASNs would you see in the BGP table on R2 for this route?（）

A. 22

B. 11

C. 1

D. None

相似考题

1.The following output on Router R1 lists details of a BGP route for 190.1.0.0/16. Which of the following is true based on this output?（）R1 show ip bgp 19 0.1.0.0/16BGP routing table entry for 190.1.0.0/16, version 121Paths: (1 available, best 1, table Default - IP - Routing - Table)Advertised to update - groups:11 2 3 41.1.1.1 from 2.2.2.2 (3.3.3.3)Origin IGP, metric 0, localpref 100, valid, internal, bestA. R1 has a neighbor 1.1.1.1 command configured.B. R1 has a neighbor 2.2.2.2 command configured.C. The show ip bgp command lists a line for 190.1.0.0/16 with both an ">" and an "i" on the left.D. R1 is in ASN 1.

2.Refer to the exhibit. On the basis of the configuration that is provided, how would the BGP updates that come from router R1 be replicated inside autonomous system 65200?()A. All BGP updates that are received on router R 2 will be sent to routers R3 and R4. Routers R3 and R4 will then forward those BGP updates to router R5B. None of the BGP updates that are received on router R2 will ever be received by router R5C. All BGP updates that are received on router R2 will not be sent to routers R3 and R4D. All BGP updates that are received on router R2 will be sent directly to router R5

3.Which option is true regarding the synchronization rule ?（）A、Do not use or internally advertise a route until the route is lear ned from a source other than BGP.B、Do not use or advertise a route until the route is learned from a BGP peer.C、Do not use or advertise routes marked PARTIAL.D、Wait until a CONFIRM message is received before using routes from BGP neighbors.

4.The following output occurs on Router R1. Which of the following cannot be determine d from this output?（）R1 show ip route 180.1.1.0 255.255.255.240Routing entry for 180.1.1.0/28Known via "bgp 2", distance 20, metric 0Tag 3, type externalLast update from 192.168.1.2 00:10:27 agoRouting Descriptor Blocks:* 192.168.1.2, from 19 2.168.1.2, 00:10:27 agoRoute metric is 0, traffic share count is 1AS Hops 2Route tag 3A. The type of BGP peer (iBGP or eBGP) that advertised this route to R1B. R1‘s ASNC. The next - hop router‘s ASND. The AS_Path length

参考答案和解析
参考答案：A
更多“Router R1, in ASN 11, learns a BGP route from BGP peer R22 in ASN 22. R1 and then uses BGP ”相关问题

  • 第1题：

    Enterprise Router R1, in ASN 1, connects to ISP Router I1, ASN 2, using eBGP. The single serial link b etween the two routers uses IP addresses 10.1.1.1 and 10.1.1.2, respectively. Both routers use their S0/0 interfaces for this link. Which of the following commands would be needed on R1 to configure eBGP?（）

    • A、router bgp 2
    • B、router bgp 1
    • C、neighbor 10.1 .1.2 remote - as 2
    • D、neighbor 10.1.1.2 Update - source 10.1.1.1
    • E、neighbor 10.1.1.2 Update- source S0/0

    正确答案:B,C

  • 第2题：

    The following output occurs on Router R1. Which of the following cannot be determine d from this output?（） R1# show ip route 180.1.1.0 255.255.255.240 Routing entry for 180.1.1.0/28 Known via "bgp 2", distance 20, metric 0 Tag 3, type external Last update from 192.168.1.2 00:10:27 ago Routing Descriptor Blocks: * 192.168.1.2, from 19 2.168.1.2, 00:10:27 ago Route metric is 0, traffic share count is 1 AS Hops 2 Route tag 3

    • A、The type of BGP peer (iBGP or eBGP) that advertised this route to R1
    • B、R1's ASN
    • C、The next - hop router's ASN
    • D、The AS_Path length

    正确答案:C

  • 第3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4题：

    Two routers configured to run BGP have been connected to a firewall， one on the inside interface and one on the outside interface. BGP has been configured so the two routers should peer， including the correct BGP session endpoint addresses and the correct BGP session hop-count limit （EBGP multihop）. What is a good first test to see if BGP will work across the firewall？（）

    • A、Attempt to TELNET from the router connected to the inside of the firewall to the router connected to the outside of the firewall. If telnet works， BGP will work， since telnet and BGP both use TCP to transport data.
    • B、Ping from the router connected to the inside interface of the firewall to the router connected to the outside interface of the firewall. If you can ping between them， BGP should work， since BGP uses IP to transport packets.
    • C、There is no way to make BGP work across a firewall without special configuration， so there is no simple test that will show you if BGP will work or not， other than trying to start the peering session.
    • D、There is no way to make BGP work across a firewall.

    正确答案:A

  • 第5题：

    Router R1 learns two routes with BGP for prefix 200.1.0.0/16. Comparing the two routes, route 1 has a longer AS_Path Length, bigger MED, bigger Weight, and smaller Loca l 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:A

  • 第6题：

    What is the first step in BGP route selection?（）

    • A、The local router prefers the route with the shortest as-path.
    • B、The router first verifies that it has a route to the bgp Next Hop IP address.
    • C、The local router prefers the route from the peer with the lowest peer id address.
    • D、The local router prefers the route learned from an ebgp peer over a route learned from an ibgp peer.

    正确答案:B

  • 第7题：

    单选题
    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： D
    解析： 暂无解析

  • 第8题：

    单选题
    Router R1, in ASN 11, learns a BGP route from BGP peer R22 in ASN 22. R1 and then uses BGP to advertise the route to R2, also in ASN 11. What ASNs would you see in the BGP table on R2 for this route?（）
    A

    22

    B

    11

    C

    1

    D

    None


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    Router R1 learns two routes with BGP for prefix 200.1.0.0/16. Comparing the two routes, route 1 has a longer AS_Path Length, bigger MED, bigger Weight, and smaller Loca l 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： D
    解析： 暂无解析

  • 第10题：

    单选题
    An Enterprise rou ter, Ent1, displays the following excerpt from the show ip bgp command. ENT1 has an eBGP connection to an ISP router with address 3.3.3.3 and an iBGP connection to a router with address 4.4.4.4. Which of the following is most likely to be true?（） Network Next Hop Metric LocPrf Weight Path *> 3.3.3.3 0 0 1 1 1 1 2 18 i
    A

    The Enterprise likely uses ASN 1.

    B

    The neighboring ISP likely uses ASN 1.

    C

    The route has been advertised through ASN 1 multiple times.

    D

    Router Ent1 will add another ASN to the  AS_Path before advertising this route to its iBGP peer (4.4.4.4).


    正确答案： C
    解析： 暂无解析

  • 第11题：

    多选题
    The following output on Router R1 lists details of a BGP route for 190.1.0.0/16. Which of the following is true based on this output?（） R1# show ip bgp 19 0.1.0.0/16 BGP routing table entry for 190.1.0.0/16, version 121 Paths: (1 available, best #1, table Default - IP - Routing - Table) Advertised to update - groups: 1 1 2 3 4 1.1.1.1 from 2.2.2.2 (3.3.3.3) Origin IGP, metric 0, localpref 100, valid, internal, best
    A

    R1 has a neighbor 1.1.1.1 command configured.

    B

    R1 has a neighbor 2.2.2.2 command configured.

    C

    The show ip bgp command lists a line for 190.1.0.0/16 with both an > and an i on the left.

    D

    R1 is in ASN 1.


    正确答案： D,C
    解析： 暂无解析

  • 第12题：

    单选题
    What is the first step in BGP route selection?（）
    A

    The local router prefers the route with the shortest AS Path.

    B

    The local router verifies that it has a route to the BGP Next Hop IP address.

    C

    The local router prefers the route from the peer with the lowest peer ID address.

    D

    The local router prefers the route learned from an EBGP peer over a route learned from an IBGP peer.


    正确答案： A
    解析： 暂无解析

  • 第13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:D

  • 第14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15题：

    An Enterprise rou ter, Ent1, displays the following excerpt from the show ip bgp command. ENT1 has an eBGP connection to an ISP router with address 3.3.3.3 and an iBGP connection to a router with address 4.4.4.4. Which of the following is most likely to be true?（） Network Next Hop Metric LocPrf Weight Path *> 3.3.3.3 0 0 1 1 1 1 2 18 i

    • A、The Enterprise likely uses ASN 1.
    • B、The neighboring ISP likely uses ASN 1.
    • C、The route has been advertised through ASN 1 multiple times.
    • D、Router Ent1 will add another ASN to the  AS_Path before advertising this route to its iBGP peer (4.4.4.4).

    正确答案:B

  • 第16题：

    The following output on Router R1 lists details of a BGP route for 190.1.0.0/16. Which of the following is true based on this output?（） R1# show ip bgp 190.1.0.0/16 BGP routing table entry for 190.1.0.0/16, version 121 Paths: (1 available, best #1, table Default - IP - Routing - Table) Advertised to update - groups: 1 1 2 3 4 1.1.1.1 from 2.2.2.2 (3.3.3.3) Origin IGP, metric 0, localpref 100, valid, internal, best

    • A、R1 has a neighbor 1.1.1.1 command configured.
    • B、R1 has a neighbor 2.2.2.2 command configured.
    • C、The show ip bgp command lists a line for 190.1.0.0/16 with both a n > and an i on the left.
    • D、R1 is in ASN 1.

    正确答案:B,C

  • 第17题：

    A problem was reported that the 10.10.10.0/24 prefix was not injected into the local BGP table ona Company router named R1. The following information is available from this router：  R1 Configuration：  router bgp 65001 network 10.0.0.0 neighbor 172.16.1.1 remote-as 65002 no auto-summary  Routing table information：  show ip route | include 10 O 10.10.10.0/24 [110/11] via 192.168.1.1， 2d00h， Ethernet0/0  Why is this prefix not in the local BGP table of the R1？（）

    • A、The 172.16.1.1 neighbor is down.
    • B、The prefix 10.10.10.0/24 is not a ’connected’ route
    • C、This route is not a BGP learned route
    • D、The network command is wrong
    • E、None of the other alternatives apply

    正确答案:D

  • 第18题：

    What is the first step in BGP route selection?（）

    • A、The local router prefers the route with the shortest AS Path.
    • B、The local router verifies that it has a route to the BGP Next Hop IP address.
    • C、The local router prefers the route from the peer with the lowest peer ID address.
    • D、The local router prefers the route learned from an EBGP peer over a route learned from an IBGP peer.

    正确答案:B

  • 第19题：

    单选题
    Two routers configured to run BGP have been connected to a firewall， one on the inside interface and one on the outside interface. BGP has been configured so the two routers should peer， including the correctBGP session endpoint addresses and the correct BGP session hop-count limit EBGP multihop. What is agood first test to see if BGP will work across the firewall？（）
    A

    Attempt to TELNET from the router connected to the inside of the firewall to the router connected to theoutside of the firewall. If telnet works， BGP will work， since telnet and BGP both use TCP to transportdata.

    B

    Ping from the router connected to the inside interface of the firewall to the router connected to theoutside interface of the firewall. If you can ping between them， BGP should work， since BGP uses IP totransport packets.

    C

    There is no way to make BGP work across a firewall without special configuration， so there is no simpletest that will show you if BGP will work or not， other than trying to start the peering session.

    D

    There is no way to make BGP work across a firewall.


    正确答案： C
    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
    Enterprise Router R1, in ASN 1, connects to ISP Router I1, ASN 2, using eBGP. The single serial link b etween the two routers uses IP addresses 10.1.1.1 and 10.1.1.2, respectively. Both routers use their S0/0 interfaces for this link. Which of the following commands would be needed on R1 to configure eBGP?（）
    A

    router bgp 2

    B

    router bgp 1

    C

    neighbor 10.1 .1.2 remote - as 2

    D

    neighbor 10.1.1.2 Update - source 10.1.1.1

    E

    neighbor 10.1.1.2 Update- source S0/0


    正确答案： A,C
    解析： 暂无解析

  • 第22题：

    单选题
    A problem was reported that the 10.10.10.0/24 prefix was not injected into the local BGP table ona Company router named R1. The following information is available from this router：  R1 Configuration：  router bgp 65001 network 10.0.0.0 neighbor 172.16.1.1 remote-as 65002 no auto-summary  Routing table information：  show ip route | include 10 O 10.10.10.0/24 [110/11] via 192.168.1.1， 2d00h， Ethernet0/0  Why is this prefix not in the local BGP table of the R1？（）
    A

    The 172.16.1.1 neighbor is down.

    B

    The prefix 10.10.10.0/24 is not a ’connected’ route

    C

    This route is not a BGP learned route

    D

    The network command is wrong

    E

    None of the other alternatives apply


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    What is the first step in BGP route selection?（）
    A

    The local router prefers the route with the shortest as-path.

    B

    The router first verifies that it has a route to the bgp Next Hop IP address.

    C

    The local router prefers the route from the peer with the lowest peer id address.

    D

    The local router prefers the route learned from an ebgp peer over a route learned from an ibgp peer.


    正确答案： B
    解析： 暂无解析

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