Which system provides the DoD wideband backbone?

• A. GBS
• B. WGS
• C. BGAN
• D. MUOS

Answer: (B)

Wideband Global SATCOM provides the DoD-wide wideband backbone by delivering high-capacity, global satellite links for secure, two-way communications across the joint force. It supports large data flows, video, and ISR data with flexible bandwidth and regional coverage, tying together headquarters, maneuver units, and distributed sensor networks. This system was designed to replace older wideband assets and to provide interoperable, resilient connectivity across services and allies, forming the backbone for DoD wideband operations.

The other options don’t fill that role: Global Broadcast System is mainly a one-way data distribution network rather than a two-way backbone; MUOS focuses on narrowband voice and limited data capabilities; BGAN is a commercial broadband service, not a DoD-wide military backbone.