DATA LINK LAYER WIRED NETWORKS
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Router
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Passive hub
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Ethernet switch
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Repeater
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Detailed explanation-1: -Ethernet switch is in layer 2 (data link) of the OSI model, while repeater/hub are in layer 1 (physical), and router is layer 3 (network).
Detailed explanation-2: -The physical layer defines the relationship between a device and a transmission medium, such as a copper or optical cable. This includes the layout of pins, voltages, cable specifications, hubs, repeaters, network adapters, host bus adapters (HBA used in storage area networks) and more.
Detailed explanation-3: -Layer 2 of the OSI model is known as the data link layer. The Layer 2 protocol you’re likely most familiar with is Ethernet. Devices in an Ethernet network are identified by a MAC (media access control) address, which is generally hardcoded to a particular device and doesn’t normally change.