Data transmission efficiency is a key factor in the performance of computer networks, as it directly affects connection speed and the quality of digital services. It refers to the network’s ability to send and receive data at high speeds with minimal loss or delay. Data transmission efficiency depends on several factors, including bandwidth, latency, communication protocols, and the quality of network infrastructure. Techniques such as data compression, traffic management, and error correction also play an important role in improving transmission efficiency. Modern networks, such as fiber-optic networks, advanced wireless technologies, and intelligent routing systems, significantly enhance data transmission efficiency. In addition, continuous network monitoring and regular updates of hardware and software help reduce failures and improve stability