TRANSPORT LAYER
TRANSMISSION CONTROL PROTOCOL TCP
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Move the data from device to device across the network
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Sequence the data for reassembly at the destination
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Packets are addressed so they can be routed through the network to the destination
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None of the above
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Detailed explanation-1: -This function–finding the path the packets must follow–is called routing. Routing is one of the main functions of the network layer. The network layer appends unique network addresses of the source and destination computers. An important addressing scheme in packet-switched networks is that used by the Internet.
Detailed explanation-2: -Data-link layer takes packets from Network Layer and encapsulates them into Frames. Then, it sends each frame bit-by-bit on the hardware. At receiver’ end, data link layer picks up signals from hardware and assembles them into frames.
Detailed explanation-3: -The data link layer provides the services within a single network while the transport layer provides the services across an internetwork made up of many networks. The data link layer controls the physical layer while the transport layer controls all the lower layers.
Detailed explanation-4: -The primary service of the data link layer is to support error-free transmission. The physical layer sends the data from the sender’s hub to the receiver’s hub as raw bits. The data link layer should recognize and correct some errors in the communicated data.