Which of the following properly describes the basic operating of a layer 2 network switch?
Enables packets to be sent from one network to another
Broadcasts packets it receives to all connections
Determines if a packet is safe for a network
Transmits packets it receives to specific connections, based on MAC address.
The wording here is purposefully confusing. While a packet technically refers to layer 3, it is a common misnomer for "data transmitted on a network." It is uncommon to hear someone say a frame was transmitted, simply saying packet is much more common. A switch will receive a frame with a packet inside it and transmit the frame based on the MAC address in the frame header.
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