Week 13

VL 27 - 07.07.25

Data Link Layer (Sicherungsschicht)

• communication between network interfaces
• mac addresses (media access control)
• arp (address resolution protocol)
• hubs and switches

VL 28 - 09.07.25

• exam topics
• transport layer: TCP / UDP
• UDP:
  • structure
  • connectionless
  • no guarantee / best effort
  • good for video, audio
• TCP:
  • structure of a TCP segment
  • ack numbers
  • sockets, sockets programming with TCP