单选题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?()AIf using OSPF or EIGRP as the PE-CE routing protocol, redistribution is not required, but any other protocol or static route will require redistributionBIf using IS-IS as the PE-CE routing protocol, no redistribution is requiredCIf using static routes between the CE and PE routers, no redistribution of other VPN routes is requiredDIf PE-CE protocol is not BGP, redistribution of other VPN routes from MP-BGP is required

单选题
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


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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

单选题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?()AIf using OSPF or EIGRP as the PE-CE routing protocol, redistribution is not required, but any other protocol or static route will require redistributionBIf using IS-IS as the PE-CE routing protocol, no redistribution is requiredCIf using static routes between the CE and PE routers, no redistribution of other VPN routes is requiredDIf PE-CE protocol is not BGP, redistribution of other VPN routes from MP-BGP is required

单选题What is a reason for implementing MPLS in a network?()AMPLS eliminates the need of an IGP in the core.BMPLS reduces the required number of BGP-enabled devices in the core.CReduces routing table lookup since only the MPLS core routers perform routing table lookups.DMPLS eliminates the need for fully meshed connections between BGP enabled devices.