多项选择题
A.The data is moving from 10BASE-TX to 100BASE-TX.
B.The WAN encapsulation type has changed.
C.The data format has changed from analog to digital.
D.The source and destination hosts are in the same subnet.
E.The source and destination MAC addresses have changed.
单项选择题 Which additional configuration step is necessary in order to connect to an access point that has SSID broadcasting disabled（）。
多项选择题 At which layers of the OSI model do WANs operate (Choose two.)（）。
多项选择题 Which three Layer 2 encapsulation types would be used on a WAN rather than a LAN (Choose three.)（）。