Coupler is a small device for connecting two cables to make a longer cable, sometimes called an inline coupler.
CMAK, or Connection Manager Administration Kit, is a wizard-based tool for creating custom connectivity solutions, and a component of Internet Connection Services for Microsoft Remote Access Service.
Child Domain is a domain in a domain tree in Microsoft Windows Server whose Domain Name System (DNS) name is a subdomain of a parent domain.
Challenge Handshake Authentication Protocol, or CHAP, is an encrypted authentication scheme in which the unencrypted password is not transmitted over the network.
Carrierless Amplitude and Phase Modulation is a line coding scheme in which data is modulated using a single carrier frequency for transmission over a phone line.
Category 5 cabling is a level 5 grade of unshielded twisted-pair (UTP) cabling.