The SOC DNS incorporates three program delivery methods: traditional classroom-based instruction and two external degree delivery methods—distance learning and learning assessment. Distance learning degrees in the SOC DNS are those degrees in which the majority of required credits are available to Service members through a distance delivery mode (e.g. Internet, video, teleconferencing, correspondence etc.), from the home college. Learning assessment usually requires little or no academic residency and may be based on college credits derived from evaluation of learning from nontraditional sources such as standardized testing, demonstration of competency from extra institutional learning that relates to academic learning or transfer of credit from other institutions.