Which Navy network is Top Secret/SCI?

• A. Niprnet
• B. Siprnet
• C. Jwics
• D. All three combined

Answer: (C)

Top Secret/Sensitive Compartmented Information is handled on JWICS, the Joint Worldwide Intelligence Communications System. JWICS is specifically set up to carry Top Secret material along with SCI—Sensitive Compartmented Information—which means access requires both the appropriate Top Secret clearance and access to the specific SCI compartments, plus the need-to-know. This separation and compartmentalization helps protect highly sensitive information.

In contrast, NIPRNET is for unclassified or low-classification data, and SIPRNET is for Secret-level information. The idea of combining all three into one network isn’t how these systems are used in practice, because keeping them separate reduces risk and ensures strict handling rules for different levels of classified information. So the network designated for Top Secret/SCI is JWICS.