Protocols - Crossword

Clues

1. Agreed rules that define how computers communicate (8)
2. Protocol used by browsers to request web pages (4)
3. HTTP with encryption protecting data from interception (5)
4. Protocol for sending email between clients and servers (4)
5. Synchronizes email across devices and the mail server (4)
6. Downloads email to a client often deleting messages from server (3)
7. Protocol used to transfer files between client and server (3)
8. Routes packets between networks using addressing for hosts (2)
9. Splits data into numbered packets ensuring reliable delivery (3)
10. Stacked network levels separating functions for simpler management (6)
11. Layer where user software sends and receives formatted data (11)
12. Layer that splits data and manages packet delivery (9)
13. Layer handling physical transmission and local area addressing (4)