Final answer:
JTF-GNO reported directly to the commander of the United States Strategic Command (USSTRATCOM) and was responsible for the operation and defense of the DoD's information networks until its merger into USCYBERCOM in 2010.
Step-by-step explanation:
The Joint Task Force-Global Network Operations (JTF-GNO) reported directly to the United States Strategic Command (USSTRATCOM). The JTF-GNO was responsible for the operation and defense of the Department of Defense's (DoD) Global Information Grid. It merged into the United States Cyber Command (USCYBERCOM) in October 2010, which is now responsible for securing the DoD's information networks. As of the last structural update before the merger, JTF-GNO would typically report directly to the commander of USSTRATCOM, providing status updates on the security and operation of the DoD's networks.