CSE 80N Lecture Notes - Lecture 22: Unicast, Hexadecimal, Address Resolution Protocol
Document Summary
No quiz this week but quiz 8 and 9 on friday, december 1. Final exam: thursday, december 14 at 4pm. Data-link layer has responsibility of transferring datagram from one node to physically adjacent node over a link. Along the path, may encounter different types of links. Datagram transferred by different protocols over different links: Mac /physical addresses used in frame headers to identify source, destination. Wireless links: high error rates, might want reliability. Pacing between adjacent sending and receiving nodes. Signals sender for retransmission or drops frame. Attaches into host system"s bus (inside computer) Connects your device to the physical medium the wire . Nics can be cards, part of the motherboard, expansion slots or a usb device. Nic encapsulates datagram in ll frame: src and dst ip and mac addresses. Receiver identifies and corrects bit error(s) without resorting retransmission. Group of computers that share a communication link. Communication does not go through a router.
