EC3401 UNIT 1 TCP/IP Architecture

TCP/IP Architecture TCP/IP Layer Corresponding OSI Layers Responsibilities Example Protocols 1. Application Layer OSI: Application, Presentation, Session Provides network services to applications HTTP, HTTPS, FTP, DNS, SMTP, POP3, Telnet 2. Transport Layer OSI: Transport End-to-end communication, error control, flow control TCP, UDP 3. Internet Layer OSI: Network Logical addressing, routing packets across networks IP, ICMP, ARP, RARP 4. Network Access (Link) Layer OSI: Data Link + Physical Defines how data is physically sent over media Ethernet, Wi-Fi, PPP, MAC