多选题Which three are used to create a separate multicast and unicast forwarding topology on a Juniper Networks router?（）AMBGPBRIB groupsCfirewall filtersDrouting policyEfilter based forwarding (FBF)

A. VRF

B. FBF

C. forwarding

D. no-forwarding

A.Multifield Classifier > Forwarding Policy > Policing > BA Classifier

B.Multifield Classifier > Policing > BA Classifier > Forwarding Policy

C.BA Classifier > Policing > Multifield Classifier > Forwarding Policy

D.BA Classifier > Forwarding Policy > Policing > Multifield Classifier

阅读下面的短文，回答问题 [When an IP packet arrives at a router, generally the router looks at the destination address of the packet, and forwards the packet to one of its network interfaces. The forwarding decision is usually done by looking up the destination address from another data structure called a forwarding table. The forwarding table is created by the router using the routing table and possible routing policies existing in the router. The router then creates a table where it lists which networks are accessible through which of the router’s network interfaces. An IP router looks at every IP packet individually and does the forwarding decision on a packet-by-packet basis. If something changes in the router’s routing table, a packet can take a different route from a preceding packet even if it has the same destination.] From the paragraph above，we can see that the router （ ） a forwarding table according to the routing table and possible routing policies existing in the router. When an IP packet arrives at a router, the （ ） part of packet is normally checked by the router. An IP router checks every IP Packet individually and makes the forwarding decision based on （ ）.

A．is generating B．generate C．is generated D．generates A．forwarding table B．network interfaces C．routing policies D．destination address A．the destination address and network interfaces B．forwarding table and network interfaces C．the destination address and forward table D．routing policies and routing table

A.ipv6 host

B.ipv6 unicast-routing

C.ipv6 local

D.ipv6 neighbor

A. MBGP

B. RIB groups

C. firewall filters

D. routing policy

E. filter based forwarding (FBF)

A. There are three IGMP modes: dense mode, sparse mode, and sparse - dense mode

B. IGMP is used to register individual hosts with a multicast group

C. IGMP version 3 enables a multicast receiving host to specify to the router which sources it should forward traffic from

D. IGMP messages a re IP datagrams with a protocol value of 2, destination address of 224.0.0.2, and a TTL value of 1

E. IGMP is a multicast routing protocol that makes packet - forwarding decisions independent of other routing protocols such as EIGRP

F. IGMP snooping ru ns on Layer 3 routers

A. inet.0

B. inet.1

C. inet.2

D. inet.4

A.transparent

B.auto

C.on

D.desirable

E.blocking

F.forwarding