多项选择题

What are two purposes of the 224.0.1.40 address in Auto……

What are two purposes of the 224.0.1.40 address in Auto-RP?（）

A. Configured mapping agents listen to this address.
B. Mapping agents select RP for a group based on highest IP address of all the group's C-RPs.
C. RP mapping agent advertises complete list of group-to-RP mappings.
D. All configured PIM-SM routers listen to this address and learn the correct RP to use for each known group.

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单项选择题In JUNOS software, which type of VPN supports IPX and Appletalk?（）

A. Martini based VPNs
B. 2547bis based VPNs
C. Sham link based VPNs
D. Virtual Router based VPNs

单项选择题Which statement would prevent the sending of redundant route advertisements when your routereflector cluster is fully meshed?（）

A. set protocols bgp group mygroup path-selection cisco-non-deterministic;
B. set protocols bgp group i-bgp no-aggregator-id;
C. set protocols bgp group mygroup no-client-reflect;
D. set protocols bgp group i-bgp damping;

多项选择题Which two statements are true by default of a multilevel IS-IS network?（）

A. Level 1 only routers see routes contained in their area.
B. Level 1 routers route towards Level 2 routers due to the attached bit.
C. Level 2 routers route towards Level 1 routers due to the attached bit.
D. Level 2 routers can see routes in other Level 2 areas and routes originated in Level 1 areas.

单项选择题In IS-IS, how long will the restart helper keep the restarting router in the up state?（）

A. until the hello dead timer expires
B. until the restart duration timer expires
C. until the restarting router sets the down bit
D. until the restart helper sends out three CSNPs

单项选择题A router receives an IPv6 packet which is 2000 bytes in length. The MTU of the outgoing interface is 1500 bytes. Which action will the router take?（）

A. Forward the packet.
B. Fragment the packet.
C. Drop the packet silently.
D. Drop the packet and send an ICMPv6 message.