Osi Layer Practice Questions

The OSI model layers from lowest to highest: Layer 1 - Physical (bits over physical medium), Layer 2 - Data Link (framing, MAC, error detection), Layer 3 - Network (routing, logical addressing), Layer 4 - Transport (end-to-end delivery, segmentation), Layer 5 - Session (session management, synchronization), Layer 6 - Presentation (data formatting, encryption, compression), Layer 7 - Application (user-facing services, HTTP, FTP, SMTP). Mnemonic: 'Please Do Not Throw Sausage Pizza Away' (bottom to top).