The Communications Networks II module covers the concepts of computer networking and telecommunications with a focus on the Internet. 


Communication Network II will be offered for the last time this Winter Semester 2023-24. The last exam will be offered in Winter Semester 23/24 and a retake exam will be offered in Summer Semester 24 (from Prof. Steinmetz and his team).

We are offering a range of new and specialized courses that you might find interesting:

Starting with history, the lecture will cover past, present and future aspects of communication networks. In addition to well-known protocols and technologies, an introduction to new developments in the area of multimedia communication (e.g. video streaming, P2P, IP telephony, cloud computing and service-oriented architectures) is given. The lecture is suitable as a follow-up lecture to Communication Networks I.

Topics include:

  • Basics and history of communication networks (telegraphy vs. telephony, reference models, ...)
  • Transport layer (addressing, flow control, connection management, error detection, congestion control, ...)
  • Transport protocols (TCP, SCTP)
  • Interactive protocols (Telnet, SSH, FTP, ...)
  • Electronic mail (SMTP, POP3, IMAP, MIME, ...)
  • World Wide Web (HTML, URL, HTTP, DNS, ...)
  • Distributed Programming (RPC, Web Services, event based communication)
  • Cloud computing (SaaS, PaaS, IaaS, virtualization, ...)
  • Overlay networks (unstructured P2P systems, DHT systems, application layer multicast, ...)
  • Video streaming (HTTP streaming, Flash streaming, RTP/RTSP, P2P streaming, ...)
  • VoIP and instant messaging (SIP, H.323)


The written exam takes place every winter semester. There is a retake in the summer semester. Depending on the number of participants, this is also in writing. If necessary, an earlier exam for Erasmus students is also possible in the winter semester.

More information is available at Tucan.