Layer 4, often referred to as the Transport Layer in the OSI model, does not have a specific historical occurrence but rather represents a conceptual framework for networking protocols. It encompasses the transport of data between devices, primarily utilizing protocols like TCP (Transmission Control Protocol) and UDP (User Datagram Protocol). The development of these protocols began in the 1970s, with TCP being standardized in 1981. Thus, layer 4 has been integral to networking since the early days of the internet.
transport layer processes occur between the applicaitoin layer and internet layer of the TCP/IP and between the session layer and network layer of the OSI model.
Troposphere: The layer closest to Earth where weather phenomena occur. Stratosphere: Contains the ozone layer that helps protect Earth from ultraviolet radiation. Mesosphere: The third layer where most meteors burn up upon entry into the atmosphere. Thermosphere: The outermost layer with very low density and where the auroras occur.
in which layer can you find weather occurring
They occur on the photosphere of the Sun.
A tornado would occur in the troposphere, the layer closest to the Earth.
Layer 3
It first occurs at the application layer.
Basal
mantle
troposphere
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