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多选题Which two mechanisms control route distribution between PE routers in a 2547bis VPN?（）Asite idBpoliciesCcircuit idDextended communities

题目
多选题
Which two mechanisms control route distribution between PE routers in a 2547bis VPN?（）
A

site id

B

policies

C

circuit id

D

extended communities

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相似问题和答案

第1题：

PE1 has connections to VPN sites that are served by three remote PE routers. How many LSPs must be established to support 2547bis?()

A. an LSP for each local CE device

B. an LSP for each remote PE device

C. an LSP for each remote CE device

D. an LSP for each CE facing interface


参考答案：B

第2题：

When implementing MPLS VPNs between CE and PE routers, which of these statements is correct?As a Network Engineer, it is necessary for you to know how to implement MPLS VPNs between Customer Edge and Provider Edge routers.Refer to the following descriptions, which one is making sense?（）

A. If using OSPF or EIGRP as the PE-CE routing protocol, redistribution is not required, but any other protocol or static route will require redistribution

B. If using IS-IS as the PE-CE routing protocol, no redistribution is required

C. If using static routes between the CE and PE routers, no redistribution of other VPN routes is required

D. If PE-CE protocol is not BGP, redistribution of other VPN routes from MP-BGP is required


参考答案：D

第3题：

Which two routes do P routers see by default in a BGP MPLS VPN configuration? ()(Choose two.)

A. IGP routes advertised by P routers

B. IGP routes advertised by PE routers

C. VPN routes advertised by PE routers

D. VPN routes advertised by CE routers


参考答案：A, B

第4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.

正确答案:B

第5题：

Which two of these are correct regarding the recommended practice for distribution layer design based on the following configuration?()

A. use a Layer 2 link between distribution switches

B. use a Layer 3 link between distribution switches

C. use a redundant link to the core

D. use a Layer 3 link between distribution switches with route summarization


参考答案：C, D

第6题：

Which three attributes are advertised to the remote PE in BGP－based VPNs?()

A. circuit ID

B. VPN label

C. route target

D. VPN number

E. route distinguisher


参考答案：B, C, E

第7题：

When implementing MPLS VPNs between CE and PE routers, which of these statements is correct? ()

A. If using IS-IS as the PE-CE routing protocol, no redistribution is required.

B. If using static routes between the CE and PE routers, no redistribution of other VPN routes is required.

C. If the PE-CE protocol is not BGP, redistribution of other VPN routes from MP-BGP is required.

D. If RIP is the routing protocol that is used between the PE-CE routers, no redistribution is required, but any other protocol will require redistribution.

E. If using OSPF or EIGRP as the PE-CE routing protocol, redistribution is not required, but any other protocol or static route will require redistribution.


参考答案：C

第8题：

Which two mechanisms control route distribution between PE routers in a 2547bis VPN?()

A. site id

B. policies

C. circuit id

D. extended communities


参考答案：B, D

第9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？（）

  • A、A sham-link is created between any twoo VPN sites that belong to the same OSPF area and share an OSPF backdoor link
  • B、A sham-link is seen as an intra-area link between PE routers，an OSPF adjacency is created and data base is exchanged
  • C、A SHAM link is created between two directly connected PE routers so that it is preferred over the low speed backdoor door
  • D、A SHAM link is part of OSPF network of MPLS-VPN provider

正确答案:A,B

第10题：

When implementing MPLS VPNs between CE and PE routers, which of these statements is correct? As a Network Engineer, it is necessary for you to know how to implement MPLS VPNs between Customer Edge and Provider Edge routers. Refer to the following descriptions, which one is making sense?（）

  • A、If using OSPF or EIGRP as the PE-CE routing protocol, redistribution is not required, but any other protocol or static route will require redistribution
  • B、If using IS-IS as the PE-CE routing protocol, no redistribution is required
  • C、If using static routes between the CE and PE routers, no redistribution of other VPN routes is required
  • D、If PE-CE protocol is not BGP, redistribution of other VPN routes from MP-BGP is required

正确答案:D

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