For each layer 
   * What is it's functionality
   * Does it employ error correction?
   * What services does it provide?
   * Give several examples if possible.

== Layer 1: Physical Layer ==

The physical layer primarily describes the process of sending 1's and 0's across the line. It includes such concepts as
   * FourierSeries
   * BandWidth
   * SignalToNoiseRatio
   * ["Decibels"]

== Layer 2: Data Link Layer ==

Moves a packet from one node (host or router) to the next node in the route. Relied on by the network layer. Services provided depend on the protocol e.g. reliable delivery. Protocols include Ethernet, WiFi and PPP

Packets on this layer are called '''Frames'''

== Layer 3: Network Layer ==

Responsible for moving network-layer packets known as '''datagrams''' from one host to another. Protocol includes the celebrated IP protocol. The internet layer also includes routing protocols. The service it provides is ''routing'' datagrams from one host to another.

== Layer 4: Transport Layer ==

Provides guaranteed delivery, flow control (between hosts) and congestion-control mechanisms. Protocols '''UDP''' and '''TCP'''.

== Layer 5: Session Layer ==

== Layer 6: Presentation Layer ==

== Layer 7: Application Layer ==

Protocols include: HTTP, SMTP, FTP, DNS etc.