Project 1: Subnetting

11/10/2020 TCP/IP Protocol

https://leocontent.umgc.edu/content/umuc/tgs/cca/cca625/2208/learning-resource-list/tcp-ip-protocol.html?ou=535215 1/2

TCP/IP Protocol

The TCP/IP Protocol is a dual-layer communication model that facilitates

communication over the internet. Transmission Control Protocol (TCP) directs the

packaging, transmission, and reception of data while the Internet Protocol (IP) controls

the address or location where the communication is sent.

Due to its extreme flexibility and scalability, TCP/IP is the main protocol of the internet

and local area networks. It is a layered protocol, which means layers are stacked on top

of each other.

TCP/IP Internet Protocol Suite

Layer 1 – Network Interface Layer

Deals with all physical components of network connectivity between the network and

the IP protocol

Protocols: Ethernet, Token Ring, Frame Relay, ATM

Layer 2 – Internet Layer

Contains all the functionality that manages the movement of data between two

network devices over a routed network

Protocols: IP, IGMP, ICMP, ARP

Layer 3 – Transfer Layer

Manages the flow of traffic between two hosts or devices, ensuring that data arrives at

the application on the host for which it is targeted

Protocols: TCP, UDP

Layer 4 – Application Layer

Acts as the final endpoints at either end of a communication session between two

network hosts

Learning Resource

11/10/2020 TCP/IP Protocol

https://leocontent.umgc.edu/content/umuc/tgs/cca/cca625/2208/learning-resource-list/tcp-ip-protocol.html?ou=535215 2/2

Protocols: Telnet, FTP, SMTP, DNS, RIP, SNMP

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