NETWORK LAYER
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Physical layer of the OSI model
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Application layer of the OSI model
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Layer 3 of the OSI model
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Network layer of the OSI model
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Layer 5 of the OSI model
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Detailed explanation-1: -Explanation: Routers operate at layer 3. LAN switches operate at layer 2. Ethernet hubs operate at layer 1.
Detailed explanation-2: -Layer 2 of The OSI Model: Data Link Layer provides the functional and procedural means to transfer data between network entities and to detect and possibly correct errors that may occur in the physical layer.
Detailed explanation-3: -Layer 2 Switch Operation Ethernet hubs and network switches work at the data link layer, with a switch delivering greater performance than a hub. Bridge devices inspect Ethernet frames. They identify frame sources and destination MAC addresses before making forwarding decisions.
Detailed explanation-4: -The most common Layer 3 device used in a network is the router.