Network analysis is a method used to study the relationships and interactions within a network. This can include social networks, computer networks, or transportation systems. By examining how different nodes (like people or computers) connect and communicate, researchers can identify patterns, strengths, and weaknesses within the network. In social network analysis, for example, researchers can visualize how individuals are connected through friendships or collaborations. This helps in understanding the flow of information and influence among people. Similarly, in computer network analysis, the focus is on optimizing data transfer and improving security by analyzing how devices communicate with each other.