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What will allow a host on VLAN 40 on switch X to communicate with a host in VLAN 50 on switch Y?
1) QoS
2) routing
3) trunking
4) VPN

What will allow a host on VLAN 40 on switch X to communicate with a host in VLAN 50 on switch Y?
1) QoS
2) routing
3) trunking
4) VPN