CAS-002 Question #656: Real Exam Question with Answer & Explanation

A security administrator at a Lab Company is required to implement a solution which will provide the highest level of confidentiality possible to all data on the lab network. The current infrastructure design includes: - Two-factor token and biometric based authentication for all users - Attributable administrator accounts - Logging of all transactions - Full disk encryption of all HDDs - Finely granular access controls to all resources - Full virtualization of all servers - The use of LUN masking to segregate SAN data - Port security on all switches The network is protected with a firewall implementing ACLs, a NIPS device, and secured wireless access points. Which of the following cryptographic improvements should be made to the current architecture to achieve the stated goals?