Answer:
First and foremost, what is network architecture? It's basically the physical and logical design which refers to the software, hardware, protocols and the media of transmission of data. Simply put, it refers to how computers are organized and how tasks are allocated among these computers. The two types of widely used network architectures are peer-to-peer aka P2P and client/server aka tiered.
Peer-to-Peer Architecture
In a peer-to-peer network, tasks are allocated to every device on the network. Furthermore, there is no real hierarchy in this network, all computers are considered equal and all have the same abilities to use the resources available on this network. Instead of having a central server which would act as the shared drive, each computer thats connected to this network would act as the server for the files stored on it.