Dale, Nell. Computer Science Illuminated 6th Edition. Jones & Bartlett Learning, 2016.
“Circuit Switching vs Packet Switching: What Are the Differences?” Comparitech, 20 May 2019, https://www.comparitech.com/net-admin/circuit-switching-vs-packet-switching/.
“What Is a Network Interface Card (NIC)? - Definition from Techopedia.” Techopedia.com, https://www.techopedia.com/definition/5306/network-interface-card-nic.