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The following output occurs on Router R1. Which of the follo

题目
单选题
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

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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：

For the accompanying router output, which of the following statements describes the stat e that neighbor 172.16.254.3 is in?()

A. The router will not accept connections from the peer.

B. BGP can exchange routing information in this state.

C. The router is listening on its server port for connection requests from the peer.

D. The router ha s sent out an active TCP connection request to the peer.


参考答案：C

第3题：

Given the following router output,which configuration file will the router use at its next reload?()

A.config

B.clientqos.cnf

C.startup-config

D.running-configuration


参考答案：D

第4题：

The following output occurs on Router R1. IP SLA operation 1 uses an ICMP echo operation type, with default frequency of 60 seconds. The operation pings from address 1.1.1.1 to address 2.2.2.2. Which of the following answers is true reg arding IP SLA and object tracking on R1?（） R1# show track Track 2 IP SLA 1 state State is Up 3 changes, last change 00:00:03 Delay up 45 secs, down 55 secs Latest operation return code: OK Latest RTT (millisecs) 6 Tracked by: STATIC - IP - ROUTING 0

  • A、The tracking return code fails after the SLA operation results in an ICMP echo failure three times.
  • B、The tracking return code fails after the SLA operation results in an ICMP echo failure one time.
  • C、After the tracking object fails, the tracking o bject moves back to an up state 45 seconds later in all cases.
  • D、After moving to a down state, the tracking object moves back to an OK state 45 seconds after the SLA operation moves to an OK state.

正确答案:D

第5题：

After logging into the RtrB router, you issue the "show interface" command as displayed below:After considering the effects of the command output illustrated in the exhibit above,which of the following protocols are operational on the serial link?（）

A. PPP

B. IP

C. Compression

D. IPX

E. Multilink

F. ATX


参考答案：A, B

第6题：

According to the following output, can you tell me which command can redistribute IGRP into EIGRP?()

A. Under t he router eigrp mode add redistribute igrp 123 subnets

B. Under the router igrp mode add redistribute eigrp 123

C. None, EIGRP and IGRP are automatically redistributed in this instance.

D. Under the router eigrp mode add redistribute igrp 123


参考答案：C

第7题：

The output of s how ip eigrp topology on Router R1 shows the following output, which is all the output related to subnet 10.11.1.0/24. How many feasible successor routes does R1 have for 10.11.1.0/24?（）P 10.11.1.0/24, 2 successors, FD is 2172419via 10.1.1.2 (2172423/2 8167), Serial0/0/0.1via 10.1.1.6 (2172423/28167), Serial0/0/0.2

A.0

B.1

C.2

D.3


参考答案：A

第8题：

Which of the following occurs during POST?()

A. OS loads

B. Safe Mode starts

C. RAM check

D. MBR check


参考答案：C

第9题：

Use the output from the router shown in the graphic above to determine which of the following are correct.()

A. Router John uses a link-state routing protocol.

B. Router John will receive routing updates on the Serial0/0 interface.

C. Router John will receive routing updates on the Serial0/1 interface.

D. Router John will send routing updates out the Serial0/0 interface.

E. Router John will send routing updates out the FastEthernet0/0 interface.

F. Router John will send routing updates out the Serial0/1 interface.


参考答案：B, D

第10题：

Which of these statements accurately identifies how Unicast Reverse Path Forwarding can be employed to prevent the use of malformed or forged IP sources addresses？（）

  • A、It is applied only on the input interface of a router.
  • B、It is applied only on the output interface of a router.
  • C、It can be configured either on the input or output interface of a router.
  • D、It cannot be configured on a router interface.
  • E、It is configured under any routing protocol process.

正确答案:A

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