Which two multicast issues can be resolved by using VideoStream? (Choose two.)

While unicast conversion does enable 802.11 retransmissions as a side effect, the inability to resent lost packets is an inherent IP multicast transport limitation that VideoStream does not specifically target - its design goals are rate optimization and admission control.

Standard IP multicast is transmitted at the lowest mandatory data rate to reach all clients, wasting significant airtime. VideoStream converts each stream to unicast per client, allowing the delivery rate to scale to the highest rate each client supports and dramatically improving airtime efficiency.

Per-client unicast acknowledgment is a mechanism that VideoStream introduces as part of its unicast conversion, not a pre-existing multicast problem that VideoStream was designed to resolve.

The maximum simultaneous client count is a capacity constraint governed by admission control thresholds, not a standalone multicast issue that VideoStream directly targets as one of its core problem-solving features.

Without VideoStream, multicast streams have no admission control and can saturate the wireless medium. VideoStream adds stream policing so that video traffic is regulated to fit within available bandwidth, protecting other traffic from being crowded out.