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单选题
You are running OSPF between two ERX Edge Routers across an OC-12c link with HDLC encapsulation. How many designated routers are present for this link?()
A

0

B

1

C

2

D

3


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考题 多选题If the OSPF protocol is used to connect customer edge (CE) routers to service provider edge(PE) routers in the VPN backbone, which two options best describe the use of SHAM links?()AA sham-link is created between any twoo VPN sites that belong to the same OSPF area and share an OSPF backdoor linkBA sham-link is seen as an intra-area link between PE routers,an OSPF adjacency is created and data base is exchangedCA SHAM link is created between two directly connected PE routers so that it is preferred over the low speed backdoor doorDA SHAM link is part of OSPF network of MPLS-VPN provider

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考题 单选题Which statement is correct about an OSPF sham-link?()A A sham-link is a logical link between PE routers that provides an OSPF adjacency between the PE routers and forwards customer traffic across it.B A sham-link is a logical link between PE routers that provides an OSPF adjacency between the PE routers and carries OSPF LSAs.C A sham-link is a logical link between PE routers that carries OSPF LSAs and forwards customer traffic across it.D A sham-link is a point-to-multipoint link that provides an OSPF adjacency between the PE routers and carries OSPF LSAs.E A sham-link is a point-to-multipoint link that provides an OSPF adjacency between the PE routers and forwards customer traffic across it.

考题 多选题While troubleshooting an EIGRP routing problem you notice that one of the company routers havegenerated a large number of SIA messages. What are two possible causes for EIGRP Stuck-In-Active routes?()ASome query or reply packets are lost between the routersBThe neighboring router starts receiving route updates from this routerCA failure causes traffic on a link between two neighboring routers to flow in only one direction(unidirectional link)DThe neighboring router stops receiving ACK packets from this router

考题 单选题Routers A and B have an OC12c and a GE link between them and are running OSPF over both of these links.Which item is correct, assuming the default JUNOS software OSPF metric calculation?()A There are two equal cost paths between A and BB The GE link is the preferred path between A and BC The OC12c link is the preferred path between A and BD Manual metric assignment must be configured to determine the outcome.