单项选择题

According to RFC 3931，L2TPv3 utilizes the IANA assigned IP protocol ID of（）.

A.121
B.115
C.110
D.101
E.151
F.51

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单项选择题

Based on the following output in a router A running LDP， which statement is true？（）

A.None of the above.
B.The IP address 50.0.0.1/32 is assigned to the non-directly connected LDP neighbor， 50.0.0.4.
C.The IP address 50.0.0.1/32 is assigned to one of its own interfaces.
D.The IP address 50.0.0.1/32 is assigned to its directly connected LDP neighbor， 50.0.0.4.

多项选择题

Which of the following are steps to configure destination-based Remote Triggered Black Hole（RTBH）filtering？（）

A.Configure OSPF between trigger router and black hole routes
B.Configure all edge routers with static （reserved） host route to Null0
C.Configure BGP beteen trigger and black hole routers
D.Configure on trigger router to advertise victim host route with commumity
E.Activate black hole by redistributing route for victim into BGP with next-hop set to the static（reserved）host route configured on edge routers

多项选择题

Which of the following comparison of Control Plane Policing （CoPP） with Receive ACL（Racl） is correct？（）

A.CoPP protects against IP spoofing；Racl protects against DoS attacks.
B.CoPP can not use named access lists；Racl can use named access lists
C.CoPP applies to a dedicated control plane interface；Racl applies to all interfaces.
D.CoPP needs a AAA server，Racl does not need a AAA server
E.CoPP supports rate limits；Racl does not support rate limits