Concurrent use of a firewall, content filtering, antivirus software and an IDS system would be considered components of: SY0-401 Concurrent use of a firewall, content filtering, antivirus software and an IDS system would be considered components of: A. Redundant systems. B. Separation of duties. C. Layered security. D. Application control. Answer: C Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+