What is an application-layer message? A transport-layer segment? A network-layer datagram? A link-layer frame?
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- An application-layer message refers to the data or information that is being exchanged between applications over a network. It is a unit of data that is transmitted from the source application to the destination application.
- A transport-layer segment is a unit of data that is created by the transport layer protocol during the process of transmitting data between two hosts. It encapsulates the application data and adds additional information such as source and destination port numbers.
- A network-layer datagram is a unit of data that is generated by the network layer protocol. It represents a packet of data that is transmitted over a network and contains the source and destination IP addresses, as well as other network-related information.
- A link-layer frame is the smallest unit of data at the link layer of the network stack. It includes the data from the network layer datagram along with additional framing information such as source and destination MAC addresses. These frames are transmitted over the physical medium of the network.
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