OSI Model

What is the correct order of the OSI Model?

1 Physical 2 Data Link 3 Network 4 Transport 5 Session 6 Presentation 7 Application
Please Do Not Throw Sausage Pizza Away

Layer 7 of the OSI Model and its function

Application layer - Network Protocols HTTP, HTTPS, FTP, SMTP, IMAP

Layer 6 of the OSI Model and its function

Presentation - Encryption / Decryption and Formatting

Layer 5 of the OSI Model and its function

Session - Session establishment, maintenance and teardown

Layer 4 of the OSI Model and its function

Transport - End to end communication using TCP & UDP - break data into smaller chunks also includes port addresses and segments

Layer 3 of the OSI Model

Network - Routes data packets between different IP networks - IP, ARP, ICMP, IP Addresses, Packets

Layer 2 of the OSI Model

Data Link - Provides physical media access - source and destination MAC addresses facilitates device to device communication on the same network

Layer 1 of the OSI Model

Physical - Transmission of signals (raw bits 1s and 0s) over physical medium i.e ethernet, WiFi, fiber optic