OSI Model by Ben Regan https://padlet.com/ben_regan_liquid11/1jo8gvk5tv1u en-us 2016-08-22 09:48:14 UTC 2023-04-21 02:35:08 UTC hello@padlet.com Layer 1 Physical https://padlet.com/ben_regan_liquid11/1jo8gvk5tv1u/wish/119116509 Uses the hardware (such as the network card) to convert binary information into raw data, this could be in the form of an electrical, light or radio signal. This depends on the data carrier and the physical components of the network. This is then converted back into binary by the receiving network card for the computer to process. Raw data is typically represented by varying voltages.

Some of the hardware in this layer may include:
-Network Repeaters
-Network Hubs or Switches
-Modems
-Network Interface Controllers]]> 2016-08-22 09:51:01 UTC https://padlet.com/ben_regan_liquid11/1jo8gvk5tv1u/wish/119116509 Layer 2 Data Link ben_regan_liquid11 https://padlet.com/ben_regan_liquid11/1jo8gvk5tv1u/wish/119116551 Provides a node-to-node data transfer which detects and possibly corrects errors that might have arisen in the physical layer. Also, it defines a protocol to establish and terminate a connection between two physically connected devices. 

IEEE 802 divides data into two sub-layers:

Media Access Control (MAC) Layer Which is responsible for controlling how devices I a network gain access to medium and permissions to transmit it. 
Logical Link Control (LLC) layer this is responsible for identifying Network layer protocols and then encapsulating them and controls error checking and frame synchronisation.]]> 2016-08-22 09:51:34 UTC https://padlet.com/ben_regan_liquid11/1jo8gvk5tv1u/wish/119116551 Layer 3 Network ben_regan_liquid11 https://padlet.com/ben_regan_liquid11/1jo8gvk5tv1u/wish/119116589 Handles the addressing and routing of the data making sure it is sent to the correct destination. The correct protocol for the information is also configured here. 

Some examples of the protocols include:
- IPv4
- IPv6
- IPSec (Internet Security Protocol)
- ICMP (Internet Control Message Protocol)]]> 2016-08-22 09:51:49 UTC https://padlet.com/ben_regan_liquid11/1jo8gvk5tv1u/wish/119116589 https://padlet.com/ben_regan_liquid11/1jo8gvk5tv1u/wish/119117748 2016-08-22 10:04:55 UTC https://padlet.com/ben_regan_liquid11/1jo8gvk5tv1u/wish/119117748