COMPUTER NETWORKS AND COMMUNICATIONS
NETWORK TOPOLOGIES AND PROTOCOLS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Data Layer
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Session Layer
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Network Layer
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Application Layer
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Detailed explanation-1: -Switches operate in the second layer of the OSI model, the data link layer.
Detailed explanation-2: -Network switches can operate at either OSI layer 2 (the data link layer) or layer 3 (the network layer). Layer 2 switches forward data based on the destination MAC address (see below for definition), while layer 3 switches forward data based on the destination IP address. Some switches can do both.
Detailed explanation-3: -Switches are one of the traffic directors on the network, and traditionally operate at Layer 2.
Detailed explanation-4: -A switch is located on the OSI model’s Data Link layer i.e., the second layer. The link layer is specific to the medium over which the packet is traveling. The Ethernet and Mac Address are part of this layer. A router resides in the Network Layer of the OSI model i.e., the third layer.
Detailed explanation-5: -The layer 2 and Layer 3 differs mainly in the routing function. A Layer 2 switch works with MAC addresses only and does not care about IP address or any items of higher layers. Layer 3 switch, or multilayer switch, can do all the job of a layer 2 switch and additional static routing and dynamic routing as well.