7.17--CAESARII Edition Daily Topics

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7.17--CAESARII Daily Topic Multiple Choice: On January 2, 2008, the U.S. president issued Executive Order No. 54 to establish the **Comprehensive National Cybersecurity Initiative (CNCI)**. CNCI plans to establish three lines of defense: the first line aims to reduce vulnerabilities and potential risks in order to prevent intrusions ； The second line of defense: a comprehensive approach to addressing all types of threats ； The third line of defense is aimed at strengthening the security environment in the future. From the above information, we can determine which of the following analyses is correct: A. CNCI is risk-focused, and the primary task of the three lines of defense is to reduce the risks faced by its networks. B. As can be seen from CNCI, threats mainly come from external sources, while vulnerabilities and weaknesses exist primarily within the system itself. C. The goal of CNCI is to develop and deploy new technologies as quickly as possible in order to completely change its poor current cybersecurity situation, rather than making minor improvements to the existing network infrastructure. D. CNCI has completely changed the previous U.S. information security strategy; it no longer regards critical infrastructure as a key focus for ensuring information security, but instead aims for comprehensive security for all networks and systems. &A. CNCI is risk-focused, and the primary task of the three lines of defense is to reduce the risks faced by its networks