单选题What does a router do?（）A Routes traffic down alternative paths and connects the local-area network (LAN) to the wide- area network (WAN)B Reads Media Access Control (MAC) addresses to forward messages to the correct location and connects the local-are

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单选题

What does a router do?（）

Routes traffic down alternative paths and connects the local-area network (LAN) to the wide- area network (WAN)

Reads Media Access Control (MAC) addresses to forward messages to the correct location and connects the local-area network (LAN) to the wide-area network (WAN)

Stores data on the network and connects the local-area network (LAN) to the wide-area network (WAN)

Broadcasts data to all devices that are connected to it across the local-area network (LAN) and wide-area network (WAN)

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单选题What does a router do?（）A Stores data on the network and connects the local-area network (LAN) to the wide-area network (WAN)B Routes traffic down alternative paths and connects the local-area network (LAN) to the wide- area network (WAN)C Broadcasts data to all devices that are connected to it across the local-area network (LAN) and wide-area network (WAN)D Reads Media Access Control (MAC) addresses to forward messages to the correct location and connects the local-area network (LAN) to the wide-area network (WAN)

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单选题What is A WAN？（）A A network that connects client devices wirelessly using radio wavesB A network that crosses metropolitan, regional, or national boundariesC A network that is restricted.to a single building ,a group of buildings, or even a single roomD A network that encompasses an entire city or metropolitanared. and. connects multiple LANs

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单选题How does a switch respond when it receives a message?（）A It reads the Layer-5 information and sends the message directly to the intended computer.B It reads the Media Access Control (MAC) address and broadcasts the message to all the computers that are connected to the switch.C It reads the Media Access Control (MAC) address and sends the message directly to the intended computer.D It reads the Layer-5 information and broadcasts the message to all the computers that are connected to the switch.

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单选题What is A WAN?（）A A network that is restricted.to A single building ,A group of buildings, or even A single room.B A network that encompasses an entire city or metropolitanared and connects multiple LANs.C A network that connects client devices wirelessly using radio waves.D A network that crosses metropolitan, regional, or national boundaries.

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单选题What does a router do?（）A Routes traffic down alternative paths and connects the local-area network (LAN) to the wide- area network (WAN)B Reads Media Access Control (MAC) addresses to forward messages to the correct location and connects the local-are

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