Please enable JavaScript.
Coggle requires JavaScript to display documents.
chapter 2-the OSI model - Coggle Diagram
chapter 2-the OSI model
the OSI model consists of seven layers
Layer 1: The physical layer
Layer 2: The data link layer
Media Access Control (MAC)
Physical addressing
last 24 bits of a MAC address are assigned by the manufacturer
No two MAC addresses in the world should have
the same value.
The first 24 bits of the 48-bit address is the vendor code
MAC addresses are written in hexadecimal notation
Logical topology
Method of transmitting on the media
Logical Link Control (LLC)
Connection services:
Flow control
Error control
Synchronizing transmissions
Layer 3: The network layer
Logical addressing:
the most widely
deployed routed protocol is Internet Protocol (IP
).
Switching:
Circuit switching
Message switching
Packet switching
Route discovery and selection
Connection services
Flow control
Packet reordering
Layer 4: The transport layer
Transmission Control Protocol (TCP
):
A connection-oriented transport
protocol
reliable transport
User Datagram Protocol (UDP):
A connectionless transport protocol.
unreliable transport
Flow Control
Windowing
Buffering
Internet Control Message Protocol (ICMP)
ping and traceroute
Layer 5: The session layer
Setting up a session
Layer 6: The presentation layer
Layer 7: The application layer