多项选择题

In the Carrier Support Carrier （CsC） feature， which two protocols run CSC-PE and CSC-CS ？（）

A.EBGPv4 with a sending community
B.IGP and LDP
C.EBGPv4 with a sending label
D.IGP and EBGPv4
E.IGP and RSVP

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单项选择题

A.8 rows by 64 bytes
B.6 rows by 64 bytes
C.10 rows by 96 bytes
D.8 rows by 128 bytes
E.9 rows by 90 bytes

单项选择题

A.10 minutes
B.5 minutes
C.120 seconds
D.60 seconds
E.30 minutes

单项选择题

A.fast convergence SFP
B.MTU discovery
C.redundancy links
D.keepalive
E.carrier delay