Defense Information Systems Network

Target entity: Defense Information Systems Network
Context triple: [Defense Data Network, replacedBy, Defense Information Systems Network]

• A. Defense Data Network
  The Defense Data Network was a U.S. Department of Defense global computer network that succeeded ARPANET and supported secure military and government communications.
• B. United States Cyber Command
  United States Cyber Command is a unified combatant command of the U.S. military responsible for conducting cyberspace operations and defending U.S. military networks and critical cyber infrastructure.
• C. Defense Communications Agency
  The Defense Communications Agency was a U.S. Department of Defense organization responsible for managing and developing military communications networks and infrastructure.
• D. United States Army Cyber Command
  United States Army Cyber Command is a major Army command responsible for conducting cyberspace operations, defending Army networks, and supporting U.S. Cyber Command in digital warfare and information security.
• E. Cybersecurity and Infrastructure Security Agency
  The Cybersecurity and Infrastructure Security Agency (CISA) is a U.S. federal agency responsible for enhancing the security, resilience, and reliability of the nation’s cybersecurity and critical infrastructure.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Defense Information Systems Network
Target entity description: The Defense Information Systems Network is the U.S. Department of Defense’s global, secure telecommunications and data network that provides critical information services to military and government users worldwide.

• A. Defense Data Network
  The Defense Data Network was a U.S. Department of Defense global computer network that succeeded ARPANET and supported secure military and government communications.
• B. United States Cyber Command
  United States Cyber Command is a unified combatant command of the U.S. military responsible for conducting cyberspace operations and defending U.S. military networks and critical cyber infrastructure.
• C. Defense Communications Agency
  The Defense Communications Agency was a U.S. Department of Defense organization responsible for managing and developing military communications networks and infrastructure.
• D. United States Army Cyber Command
  United States Army Cyber Command is a major Army command responsible for conducting cyberspace operations, defending Army networks, and supporting U.S. Cyber Command in digital warfare and information security.
• E. Cybersecurity and Infrastructure Security Agency
  The Cybersecurity and Infrastructure Security Agency (CISA) is a U.S. federal agency responsible for enhancing the security, resilience, and reliability of the nation’s cybersecurity and critical infrastructure.
• F. None of above. chosen