Layer 1: Physical, Signaling of Data Through Cables, Refers to the physical cables, Layer 2: Data Link, Frame, MAC Address, EUI, Switch, MAC address helps the DLC protocols, Switching Layer, ARP Table on a switch, Layer 3: Network, The Routing Layer, Internet Protocol (IP), Router, Packets, Fragments frames to traverse different networks, Access Control List (ACL), Layer 4: Transport, Regards to how data is transported, TCP UDP, TCP segment, UDP datagram, Data segmentation and Reassembly, End-to end flow control, Reliable message delivery, Layer 5: Session, Communication Managemet between devices, Start, Stop, Restart, Control Protocols, Tunneling Protocols, Layer 6: Presentation, Character Encoding, Application Encryption (SSL/TLS), Often combined with Application Layer, Layer 7: Application, Layer we see , HTTP, FTP, DNS, POP3,

1.1 Understanding the OSI Model Network+ N10-009

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