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【单选题】
Which statement is true regarding an Ethernet collision domain?（）A.
If a router is used, the collision domain includes all devices connected to the router
B.
If a hub is used, the colision domain is limited to each device and the hub
C.
If a switch is used, the collision domain is limited to each device and the switch
D.
If a bridge is used, the collision domain includes all devices connected to the bridge
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