Which of the following properly describes the basic operating of a layer 2 network switch?
Determines if a packet is safe for a network
Enables packets to be sent from one network to another
Broadcasts packets it receives to all connections
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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