单项选择题

Which tech nology manages multicast traffic at Layer 2 by configuring Layer 2 LAN interfaces dynamically to forward multicast traffic only to those interfaces that want to receive it?（）

A. IGMP
B. IGMP snooping
C. PIM - DM
D. DVMRP
E. MOS PF

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单项选择题

Refer to the exhibit. Which command would verify if PBR reacts to packets sourced from 172.16.0.0/16?（）

A. show ip route
B. show policy - map
C. show access - lists
D. show route - map

多项选择题

Which three statements about OSPF areas are true?（）

A. Areas introduce a boundary on the link - state updates.
B. Areas are logical definitions specific to any given router.
C. All routers within an area have the exact link - state database.
D. The calculation of the Dijkstra algorithm on a router is limited to changes within an area.
E. The area designated router will always have a priority of 0.

多项选择题

Refer to the exhibit. Which two Cisco IOS commands on R2 would verify its OSPF neighbor relationships?（）

A.show ip ospf
B.show ip ospf interface
C.show ip ospf neighbor
D.show ip ospf database
E.show ip ospf statistics
F.show running - config begin router ospf