Refer to the exhibit. Users from the Engineering VLAN complain that every time Business VLAN users have a network connectivity issue, the Engineering VLAN users usually have problems experiencing slow response or network connectivity problems. After troubleshooting, an unauthorized switch 2 was found. This unauthorized switch has been a regular problem, assuming the root bridge function under the spanning-tree domain and causing the

Engineering VLAN to be unstable. Which three of these actions could be suggested to fix the problem?

(config)#interface s0/0 (config-if)#ip wccp 61 out (config)#interface e0/0 (config-if)#ip wccp 62 out

A.
Upgrade Spanning Tree Protocol to Rapid Spanning Tree Protocol.

B.
Change Business VLAN PCs to switch 1 and switch 4.

C.
Force the root bridge to be switch 2, instead.

D.
Adjust spanning-tree timers (max-age and forward-delay).

E.
Shut down all unused ports.

F.
Use MSTP to separate the Engineering VLAN from the Business VLAN to optimize spanning-tree convergence time within each VLAN

Upgrade Spanning Tree Protocol to Rapid Spanning Tree Protocol.