An organization needs to implement a computer network for devices within an office building. The organization decided that it wants the network to operate without central servers. What is the appropriate network architecture for the computer network?

File transfer refers to the process of sending files from one device to another, typically over a network. While file transfer may occur within any network architecture, it does not specify a structural or organizational framework for the network itself. Therefore, it cannot be considered a suitable answer for the network architecture question.

A router-switch configuration involves using routers and switches to direct traffic within a network, often in centralized architectures. This setup typically relies on central devices to manage connections and routes, making it unsuitable for a network designed to operate without central servers. Thus, it doesn't meet the requirements stated in the question.

A virtual private network (VPN) creates a secure connection over the internet, allowing remote users to access a private network. While VPNs are essential for secure data transmission, they do not define an organizational structure for a local office network and typically require central management. Therefore, this option does not fulfill the criteria for the desired network architecture.