多选题The LAN needs are expanding at the Testking corporate office, which is quickly growing. You are instructed to enlarge the area covered by a single LAN segment on the TestKing network.Which of the following are layer 1 devices that you can use?（）AA switch.BA router.CA network adapter card.DA hub.EA repeater.
多选题
The LAN needs are expanding at the Testking corporate office, which is quickly growing. You are instructed to enlarge the area covered by a single LAN segment on the TestKing network.Which of the following are layer 1 devices that you can use?（）
A
A switch.
B
A router.
C
A network adapter card.
D
A hub.
E
A repeater.
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