Which protocol uses tunneling to send PPP packets over a nonsecure network such as the Internet? A. TCP B. DHCP C. HTML D. PPTP Solution Answer D is the correct answer. The Point-to-Point Tunneling Protocol (PPTP) encapsulates IP packets for transport over a public network. PPTP is used by remote access servers to support communications between remote users and a private home or corporate network. Answer A is incorrect because TCP is a Transport layer protocol and has no role in tunneling. Answer B, the Domain Host Configuration Protocol, is used to assign and track IP address allocations on an IP network and is not related to tunneling, so it\'s incorrect. Answer C is also incorrect because it is a language used on the Internet\'s World Wide Web. HTML is basically ASCII text surrounded by HTML commands..