Can be practiced with "Free Cisco Catalyst Switch Lab", by Brendan Choi
1: Prepare the switches for the lab.
2: Configure basic switch parameters.
3: Configure the trunks and EtherChannels.
4: Configure VTP on ALS1 and ALS2.
5: Configure VTP and the VLANs on DLS1.
6: Configure IP routing, VLAN SVIs, and HSRP on DLS1 and DLS2.
7: Configure access ports to trust IP phone CoS.
8: Verify the access layer auto QoS configuration.
9: Configure the distribution layer switches to trust access layer CoS.
10: Verify the distribution layer auto QoS configuration.
11: Manually assign access layer CoS for the camera.