单项选择题

What is the data encapsulation method for the VPLS virtual circuit （VC）？（）

A.MAC over MPLS
B.L2TPV3
C.802.1 QinQ
D.Ethernet over MPLS
E.GRE

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多项选择题

What three major tasks are performed by a Designated Intermediate System in an ISIS pseudonodeenvironment？（）

A.Updating the pseudonode LSP
B.maintaining pseudonode link-state information
C.creating the pseudonode
D.flooding LSPs over the LAN
E.election of the pseudonode

单项选择题

What does RPL stand for？（）

A.routing primary language
B.routing policy language
C.routing police language
D.routing program language
E.routing protocol language

多项选择题

Which three components are included in the Cisco IOS XR infrastructure？（）

A.modular line cards
B.shelf controllers
C.route processors
D.service processors
E.distributed service cards