Question 1

What is the value of the linkage between OSPF and BFD?

Options :

A : OSPFofhelloThe sending interval is in seconds, more thanBFDInduction link status is fast

B : BFDThe message sending interval can reach the millisecond level, which is less thanOSPFInduction link status is slow

C : Detected at the millisecond levelBFD. associationOSPFstate, fulfilledOSPFThe purpose of quickly sensing the status of the tank

D : BFDAny change in state will not affectOSPFneighbor state

Answer: C

Question 2

The cutover risk assessment mainly considers which of the following aspects?

Options :

A : loss from risk

B : Scope of Risk Impact

C : time of risk

D : Location of key risk points

Answer: A,B,C,D

Question 3

When deploying MPLS/BGP IP VPN, which of the following descriptions is wrong about using BGP to exchange routing information between PEs and CEs?

Options :

A : existCEIn the case of multi-homing, enableBGP ASThe number substitution function may cause routing loops that can be passed throughBGP SoDpreventVPNIntra-site routing loops

B : whenPEandCEbetweenBGPWhen exchanging routing information, if twoVPNThe autonomous system the site is in uses the same privateASnumber, can be passed throughASThe number replacement function is to use any specifiedASreplace the received private network route with theASnumber to preventASRoutes are discarded due to duplicate numbers

C : existHub&Spokescene, whenHub-CEandHub-PEuseIGPTimeSpoke-PEandSpake-CEcannot makeEBGP

D : whenPEandCEbetweenBGPWhen exchanging routing information, you do not need toPEPerform private network route import on theBGPoperation

Answer: B

Question 4

Which of the following actions may affect the normal operation of the customer's network?

Options :

A : Device naming

B : software upgrade

C : Hardware expansion

D : Routing Protocol Configuration Changes

Answer: B,C,D

Question 5

In addition to virtual connections, what type of IPv6 address is the source IPv6 address of OSPFv3's Hello text?

Options :

A : IPv6anycast address

B : unique local address

C : Global Unicast Address

D : link-local address

Answer: D

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