System diagnostics refers to the process of evaluating and analyzing the performance and functionality of a computer or network system. It involves using various tools and techniques to identify issues, monitor system health, and ensure that all components are operating correctly. This can include checking hardware components, software applications, and network connections. The goal of system diagnostics is to detect problems early, allowing for timely repairs or optimizations. Common tools used in diagnostics include performance monitoring software, hardware testing utilities, and network analysis tools. By conducting regular diagnostics, users can maintain system efficiency and prevent potential failures.