试题详情
- 单项选择题Wide Area Network (WAN) is a computer network that covers a broad areA. Which statement is correct for wide-area network (WAN)?（）
A、Connects client devices wireless protocol
B、Crosses metropolitan, regional, or national boundaries
C、Limited in a single building, a group of buildings, or even a single room
D、Encompasses an entire city or metropolitan area and connects multiple local-area networks (LANs)
- B
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