What is a standardized physical network interface for connecting equipment called?

The term used to describe a standardized physical network interface for connecting equipment is known as a Registered Jack (RJ). This designation pertains to a series of connectors that specify a standard for telecommunication and data networking interfaces. The RJ standard, for example, includes various types such as RJ45, which is commonly used for Ethernet networking, allowing devices like computers and routers to connect within a local area network (LAN).

This standardization is essential because it ensures compatibility and interoperability between various devices and equipment from different manufacturers. Consequently, when networking professionals implement systems, they rely on these standardized interfaces to facilitate efficient communication and networking.

The other options pertain to different types of technology: Network Attached Storage (NAS) refers to storage devices that connect to a network for file sharing; Universal Serial Bus (USB) is a standard for connecting peripheral devices but is not specifically designed for network connections; and an Ethernet Switch is a device that connects different devices on a network but is not, in itself, a standardized interface for connecting equipment.