Multi-partite viruses are known for which of the following behaviors?

Multi-partite viruses are characterized by their ability to combine the functions of both file infectors and boot sector viruses. This means they can infect executable files as well as the boot sector of a storage device, allowing them to spread in multiple ways. When a multi-partite virus infects an executable file, it can capitalize on typical user behaviors, such as running applications, to execute itself and possibly infect other files. Additionally, by targeting the boot sector, the virus ensures it can execute as the system starts, gaining control before the operating system fully loads. This dual capability makes multi-partite viruses particularly versatile and challenging to detect and eliminate, as they can employ different strategies for infection and propagation.

The other options do not accurately describe multi-partite viruses. While they may involve multiple forms of infection, they do not specifically infect multiple partitions or boot sectors in a traditional sense, and they do not inherently spread through local networks as a primary behavior.