Which two multicast groups support Auto-RP mapping and discovery?（）

单项选择题In JUNOS software, what is the default interface metric for IS-IS?（）

A.1
B.10
C.100
D.10^8/link bandwidth

多项选择题Firewall filter policers can perform which two actions?（）

A. Set the next hop.
B. Discard packets.
C. Set loss priority.
D. Sample packet content.

多项选择题Which two mechanisms control route distribution between PE routers in a 2547bis VPN?（）

A. site id
B. policies
C. circuit id
D. extended communities

多项选择题In which two ways can you influence how downstream LSRs treat MPLS traffic?（）

A. Use an EXP rewrite table.
B. Use a DSCP rewrite table.
C. Statically assign a CoS value to an LDP-signaled LSP.
D. Statically assign a CoS value to an RSVP-signaled LSP.

单项选择题In JUNOS software, unclassified packets are associated with which forwarding class?（）

A. network control
B. best effort
C. assured forwarding
D. expedited forwarding