MPLS（Multi -protocol Label Switching，多协议标签交换技术）是新一代广域网传输技术。以下关于MPL

A.ICMP

B. BFD

C. UDP

D. MPLS

A.Label Data Pair

B.Label Distribution Pair

C.Label Distribution Protocol

D.Label Data Protocol

A.Label Selection Pair

B.Label Switched Path

C.Lighweight Signaling Protocol

D.Large Sampling Path

A.Label Selection Pair

B.Label Switched Path

C.Lightweight Signaling Protocol

D.Large Sampling Path

A. Layer 3 MPLS VPNs can forward only IP packets

B. Layer 2 MPLS VPNs can forward any network protocol

C. MPLS label paths are automatically formed based on Layer 2 frames

D. Layer 3 MPLS VPNs can forward any network protocol based on Layer 2 frames

E. In Layer 2 MPLS VPNS, the service provider controls the customer Layer 3 policies

A.OLT与ONU之间数据传输基于IEEE802.3以太网帧

B.传输线路速率下行/上行：1250MbPS/1250MbPS

C.以MAC控制子层的MPCP（MULTI POINT CONTrOL PrOTOCOL）机制为基础，MPCP通过消息、状态机和定时器来控制访问P2MP的拓扑结构

D.逻辑分光比1：32（1：64）

A、show ip route vrf test, show mpls forwarding-table

B、show mpls forwarding-table, show ip protocol routing vrf test

C、show ip protocol routing vrf test , show ip route vrf test

D、show mpls ldp bingding, show ip route vrf test

A.Random Early Detection (RED) queuing

B.Multi-protocol label-switching (MPLS)

C.Public Key Cryptography Standard (PKCS)

D.Resource Reservation Protocol (RSVP)

A.IPSec(Internet Protocol Security extensions)

B.GRE(Generic Routing Encapsulation)

C.MPLS(Multi-Protocol Label Switching)

D.EON(CLNP over IP)

t？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