Is frame relay an example of WAN?

Yes, Frame Relay is an example of a Wide Area Network (WAN) technology. It provides a method for connecting multiple local area networks (LANs) over long distances using a packet-switching technique. Frame Relay is designed to handle data transmissions efficiently and is often used for connecting remote sites to a central network. However, it's worth noting that its use has declined with the rise of newer technologies like MPLS and broadband connections.