Network performance refers to how well a computer network operates, focusing on factors like speed, reliability, and efficiency. Key metrics include bandwidth, which measures the maximum data transfer rate, and latency, which indicates the delay in data transmission. High network performance ensures that data is sent and received quickly, making online activities smoother. Another important aspect of network performance is packet loss, which occurs when data packets fail to reach their destination. This can lead to interruptions in services like video streaming or online gaming. Tools and techniques, such as network monitoring and traffic management, help optimize performance and identify issues.