What Is a Network Diagnostic?

Network diagnostics (Network Tomography) is a new network measurement and inference method developed in modern times. It estimates the unobservable network information through the limited information that can be collected. It is mainly divided into active diagnostics (passive diagnosis) and passive diagnostics (passive diagnosis) tomography) two types of problems. Passive diagnosis is the collection of data from individual nodes to find information on the path. The problem lies in estimating the traffic matrix from the starting node to the terminal node.