Sensitive Compartmented Information (SCI) Security Refresher Practice Test

Signals Intelligence is the umbrella for collecting and analyzing electronic signals and communications. The scenario describes intercepting verbal and nonverbal signals from land, sea, and satellite, secured under the COMINT SCI control system. COMINT is Communications Intelligence, a subset of SIGINT that specifically targets intercepted communications and related signals. This makes SIGINT the best descriptor for the collection described. The other disciplines—HUMINT (human sources), OSINT (open sources), and MASINT (measurements and signatures from technical sensors)—cover different types of intelligence and don’t fit the described collection.