TCP/IP Protocol Suite Flashcards
TCP/IP
Transmission Control Protocol slash Internet Protocol
TCP/IP
Defines how devices should be connected over the internet and how data should be transmitted between those devices.
TCP
Operates at Layer 4 and is responsible for making sure that the data that the source device sends arrives at it destination.
IP
Operates at Layer 3 and is responsible for the transmission of data. It does not do any error correction itself.
TCP/IP primary purpose of this reference model
Is to help you understand the functions and processes that are involved in data communication.
Link Layer
This layer is also known as the network access layer and is equivalent of both the physical and data link layers of the OSI model. It involves components such as cables, connectors, and network cards. The link layer of the TCP/IP model is concerned with hardware addresses.
Internet Layer
It routes data from the source to the destination by defining the packet and address scheme, moving data between the link and transport layers, routing packets of data to remote hosts, and performing fragmentation and reassembly of data packets. This is the layer IP operates.
Transport Layer
It is the layer that TCP and UDP operates. This layer provides communication services directly to the application processes that are running on network hosts.
Application Layer
This layer provides application for file transfer, network troubleshooting, and internet activities. It also supports network APIs, which allow programs that have been created for a particular operating system to access the network.