Question 1

What are the wrong statements about OSPF's Router LSA and Network LSA?

Options :

A : runDSPFThe router must generateNetwork LSA

B : runOSPFThe router must generateRouter LSA

C : OSPFmust exist in the networkRouter LSAandNetwork LSA

D : Network LSA, Carry both topology and routing information

Answer: A,C

Question 2

The OSPF protocol is run between CE and PE, when CE1 advertises the route of its site to CE2. Which of the following descriptions is incorrect?

Options :

A : whenPE2receivePE1sentBGProutedDomain IDcorrect for all when different from localLSA. PE2will generateType5LSAorType7 LSA

B : whenPE2receivePE1sentBGProutedDomain IDWhen the same as local, forTypel LSAandType2LSA. PE2will generateType3 LSA

C : whenPE2receivePEIsentBGProutedDomain IDSame as local forType3 LSA. PE2will generateType5 LSA

D : PEIconfiguredDomain IDcan be used asBGPThe extended community attribute of is sent with the route toPE2

Answer: C

Question 3

In PLSVPN, in order to distinguish IPv4 prefixes that use the same address space, the value of R0 is added to the IPv4 address. The correct description of the following options is:

Options :

A : On a PE device, each VP instance corresponds to a value of 0. On the same PE device, the RD value must be unique.____, ____, ____.

B : RD can be used to control the publication of 1 routing information

C : RD is encapsulated in Update message as BGP extended community attribute during delivery

D : After the PE receives the IPv4 route from the CE, it adds RD to the IPv4 route to convert it into a globally unique VPN-IPv4 route, and publishes it on the public network

Answer: A,C

Question 4

As shown in the figure, MPLS/BGP IPVPN is deployed on the network. The MP-BGP neighbor relationship is established between PE1 and PE2 through the LoopbackD interface. After the configuration is complete, it is found that CE1 and CE2 cannot learn routes from each other. Run the command to check the error on PE2. The neighbor information is shown in the figure, what is the most likely cause of the problem?

Options :

A : PE1orPE2±ofVPNInstance parameter configuration error

B : PE1andPE2not presentBGP-VPN4Enabling neighbors in unicast address family view

C : PE1andPE2betweenLSPTunnel not established

D : PE1orPE2with each otherCEMisconfigured routing protocol between

Answer: B

Question 5

display interface GEO/O/O once, and found that the Total Eror count (the total number of error packets at the physical layer of the interface) is not correct. . At this time, it can be concluded that the current time and fall has not disappeared

Options :

A : True

B : False

Answer: A