What file is commonly edited to configure network interfaces in Linux?

The file commonly edited to configure network interfaces in Linux is located at /etc/network/interfaces. This file is specifically used in Debian-based distributions such as Debian and Ubuntu to manage network interfaces. It allows administrators to define settings such as whether the interface should use DHCP or a static IP address, as well as configuring other interface options.

When the system boots or the network service is restarted, the configurations set in this file are applied to the corresponding network interfaces. The syntax in this file is clear and straightforward, making it a standard choice for managing network settings in these Linux distributions.

While the other options might seem plausible, they either refer to incorrect paths or are associated with different systems or configurations. For instance, /etc/interfaces is not a recognized standard file for network configuration; it's a common misunderstanding of the correct file name. The paths /usr/network/interfaces and /var/network/config do not correspond to standard locations for network interface configuration in Linux, contributing to their inapplicability.