What services does the internet layer provide?

The internet layer packs data into data packets known as IP datagrams, which contain source and destination address information that is used to forward the datagrams between hosts and across networks. The Internet layer is also responsible for routing of IP datagrams.

Its job is to allow the host to insert packets to the internet,when data is sent, each layer treats all the information it receives as data and adds control information to the front of that data. This control information is called a header, and the addition of a header is called encapsulation. When data is received, the opposite procedure takes place as each layer removes its header before passing the data to the layer above.

The protocols include IP (Internet Protocol), ICMP (Internet Control Message Protocol),ARP (Address Resolution Protocol) and RARP (Reverse Address Resolution Protocol)