单项选择题
What value is primarily used to determine which port becomes the root port on each nonroot switch in a spanning-tree topology?（）
A.lowest port MAC address
B.port priority number and MAC address.
C.VTP revision number
D.highest port priority number.
E.path cost
相关考题
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单项选择题
Refer to the exhibit. Based on the information given. Which switch will be elected root bridge and why?（）
A.Switch A ,because it has the lowest MAC address
B.Switch C,because it has the lowest priority
C.Switch B,because it has the highest MAC address
D.Switch C,because it is the most centrally located switch
E.Switch A,because it is the most centrally located switch
F.Switch D,because it has the highest priority -
多项选择题
For what two purposes does the Ethernet protocol use physical addresses? （）
A.to uniquely identify devices at Layer 2
B.to allow communication with devices on a different network
C.to differentiate a Layer 2 frame from a Layer 3 packet
D.to establish a priority system to determine which device gets to transmit first
E.to allow communication between different devices on the same network
F.to allow detection of a remote device when its physical address is unknown -
多项选择题
Which destination addresses will be used by Host A to send data to Host C?（）
A.the IP address of Switch 1
B.the MAC address of Switch 1
C.the IP address of Host C
D.the MAC address of Host C
E.the IP address of the router's E0 interface
F.the MAC address of the router's E0 interface
