When connecting a Local Area Network (LAN) to a Wide Area Network (WAN) in any sized organization, there are a number of options and elements that need to be considered such as the types of services that will be delivered (voice and data) and remote access. Describe in detail the types of WAN connectivity techniques used (packet-switched, dedicated circuit, circuit-switch) for voice and data and the type of authentication methods implemented for remote users at your workplace and residence?