A.ip pim ssm
B.ip pim ssm 232.0.0.0 255.0.0.0
C.ip pim ssm range 50
D.access-list 50 permit 232.0.0.0 15.255.255.255
E.ip pim enable default

A. 10.1.1.1
B. 10.1.1.2
C. 10.1.1.3
D. The default gateway

A.Source-Active Message
B.PIM Join
C.PIM Hello
D.MSDP Register

A.224.0.1.37
B.224.0.1.38
C.224.0.1.39
D.224.0.1.40

A. Take any packet sourced from any address in the 10.2.0.0/16 network or destined to 10.1.14.25 and set the next hop to 10.1.1.1
B. Take any packet sourced from any address in the 10.2.0.0/16 network and destined to 10.1.14.25 and set the next hop to 10.1.1.1
C. Nothing； extended access lists are not allowed in route maps used for policy-based routing
D. Drop any packet sourced from 10.2.0.0/16

A.Register
B.Register-Stop
C.Join/Prune
D.Reject
E.Register-Prune
F.Register-Join

A.router-id 1.2.3.4
B.router-id 2011：：1
C.router-id Loopback0
D.router-id FF02：：5

A.filter-list
B.inbound ACL
C.route-map
D.outbound ACL
E.prefix-list
F.neighbor 10.0.0.1 deny-map my-map command

A.configuring EIGRP stubs
B.configuring a second EIGRP AS and redistributing
C.configuring summary addresses
D.configuring an offset-list
E.configuring a prefix-list
F.configuring unicast neighbors

A.It will fragment the packet at Layer 2.
B.It will fragment the packet at Layer 3.
C.It will drop the packet and send an ICMPv6 message "packet too big" back to the source.
D.It will drop the packet.

A.ldp explicit-null
B.mpls forwarding explicit-null
C.mpls ldp advertise-labels explicit null
D.mpls ldp explicit-null