Hankyu Kimhankyukim.hashnode.dev·Jun 4, 2024OSI 7 layers[7] Application Layer data unit : message protocol : HTTP, SMTP, FTP, SIP, etc. As the final destination, application layer is commonly used for the multiple applications to communicate with each other. It is closest to the users, often interacting d...networkAdd a thoughtful commentNo comments yetBe the first to start the conversation.