Which two functions are supported for BGP extension MP-BGP for IP multicasting? (Choose two.)

Question

Options

• AA network can support incongruent unicast and multicast topologies.
• BA network can support congruent unicast and multicast topologies.
• CMP-BGP is an enhanced BGP that carries routing information for multiple network layer protocols
• DMP-BGP carries single sets of routes for unicast routing and multicast routing.
• EMP-BGP is useful when a link dedicated to multicast and unicast traffic is desired.

• A
  94% (32)
• B
  3% (1)
• E
  3% (1)

Explanation

MP-BGP (Multiprotocol BGP), defined in RFC 4760, extends BGP to carry routing information for multiple network-layer protocols beyond IPv4 unicast, including IPv6, VPNv4, and multicast topologies (Option C). For IP multicasting, MP-BGP introduces the MRIB (Multicast Routing Information Base) separately from the unicast RIB, which allows a network to support incongruent unicast and multicast topologies (Option A)-meaning multicast RPF checks can use a different path than unicast forwarding, enabling traffic engineering flexibility. Option B is incorrect because supporting congruent topologies is not a unique MP-BGP feature-congruence is the default behavior without MP-BGP. Option D is incorrect because MP-BGP carries separate sets of routes for unicast and multicast (that is its key value). Option E is incorrect because MP-BGP does not dedicate links to specific traffic types-it is a control-plane extension, not a traffic-separation mechanism.

No community discussion yet for this question.