The acronym SIPRNet stands for which of the following?

• A. Secure Internet Protocol Router Network
• B. Secure Internal Protocol Router Network
• C. System Internet Protocol Router Network
• D. Secure Internet Private Router Network

Answer: (A)

SIPRNet is the secure, IP-based network used by the U.S. Department of Defense to transmit information up to the SECRET level. The acronym expands to Secure Internet Protocol Router Network: "Secure" denotes protection and access controls, "Internet Protocol" refers to the IP addressing and routing standard, and "Router Network" indicates a network interconnected by routers. The other options replace Internet with Internal, System, or Private, which would convey a different meaning and do not reflect the official name. This network design separates classified traffic from unclassified networks, helping to protect sensitive information.