OSI Model Simplified

Source
Data flows from layer 7 to layer 1
7 - Username and password given - Data
6 - Encrypted and compressed - Formatted Data
5 - Session created with destination PC - Formatted Data
4 - Data simlified as many Segments and send in an order,
      Protocols used to represent application - Segments
3 - Source IP & Destination IP is set on packets - Packets
2 - Source MAC & Destination MAC is set on Frames - Frames
1 - Bits in the format of 0s and 1s - Bits

Destination
Data flows from layer 1 to layer 7
1 - Receives Bits -Bits
2 - Converts to Frames, Verifies the destination MAC address is correct. If not correct its rejected
3 - Frames converted to Packets and verifies the destination IP.
4 - Receives the segments in the order transmitted. If TCP used Acknowledgement send, UDP no acknowledgement.
5 - Session is ended after data transmission and reception is finished.- Formatted Data
6 - Formatted data is decrypted and decompressed.
7 - Original Data received