What is the purpose/importance of DSIGs?

• A. Improve supply chain speed
• B. Forecast weather more accurately
• C. Track personnel eligibility
• D. Foundation for kill chain/web

Answer: (D)

DSIGs, or digital signatures, provide authenticity, data integrity, and non-repudiation for digital information. This makes them the foundation for a kill chain and a web of trust. In a kill chain, every step—data, commands, and decisions—depends on trusting both who created the information and that it hasn’t been altered along the way. A digital signature attached to that information proves its origin and protects its integrity, so each link can be verified and trusted. In a web of trust, signatures from trusted parties establish credible relationships; others can verify identities and data without needing to depend on a single central authority. The other options miss the essential role of verifying origin and integrity, which is why DSIGs are foundational here.