Network failure occurs when a computer network stops functioning properly, preventing devices from communicating with each other. This can happen due to various reasons, such as hardware malfunctions, software bugs, or issues with the internet service provider. When a network fails, users may experience slow connections, dropped calls, or an inability to access online services. To resolve network failures, technicians often troubleshoot the problem by checking routers, switches, and cables for faults. They may also restart devices or update software to restore connectivity. Understanding the causes of network failure can help individuals and businesses maintain reliable communication and avoid disruptions in their daily activities.