What fundamental theoretical knowledge of programming and computer science did you acquire at university?

Universities typically study fundamental topics that form the basis for understanding programming and computer science:

• Algorithms and data structures: sorting, trees, graphs, hashing.
• Computability and complexity theory: concepts about which problems can be solved algorithmically and how efficiently.
• Computer architecture: device of the processor, memory, input-output.
• Operating systems: processes, threads, memory management.
• Programming languages and paradigms: procedural, object-oriented, functional programming.
• Databases: data models, queries, transactions.
• Networks and protocols: basics of data transmission, TCP/IP.

This knowledge helps understand how programs work at low and high levels, and create efficient solutions.