A、Business-critical traffic includes VoIP and voice signaling packets.

B、SDM can be used to configure a basic QoS policy for incoming traffic on WAN interfaces and IPsec tunnels.

C、SDM can provide QoS for real-time traffic and business-critical traffic.

D、SDM creates a custom-queuing （CQ） or a priority-queuing （PQ） policy.

E、SDM creates a low latency queuing （LLQ） service policy with its associated classes.

F、When allocating bandwidth， values can be entered in either bandwidth percentage or kilobytes per second （kBps）.