Which two statements about MLD snooping are true? (Choose two)
A.
When MLD snooping is enabled, QoS is automatically enabled
B.
A VLAN can support multiple active MLD snooping queriers, as long as each one is associated to a different multicast group
C.
An MLD snooping querier election occurs when any MLD snooping querier goes down or if there is an IP address change on the active querier
D.
When multiple MLD snooping queriers are enabled in a VLAN, the querier with the lowest IP address in the VLAN is elected as the active MLD snooping querier
The Answer Is:
C, D
This question includes an explanation.
Explanation:
MLD (Multicast Listener Discovery) snooping for IPv6 operates similarly to IGMP snooping in IPv4. It tracks listener reports to restrict multicast flooding within a Layer 2 domain.
C: Querier elections are triggered when a querier becomes unreachable or its IP address changes.
D: The querier with the lowest IPv6 address is elected as the active querier, which manages report/query communication.
Other options:
A: QoS is not automatically enabled with MLD snooping.
B: MLD querier functionality operates per VLAN—not per group—so only one querier is elected per VLAN.
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