*Question:* VPN solution provides network security using the data security assurance model (the CIA triad: confidentiality, integrity, and authentication). Confidentiality provides data privacy via encryption technique, whereas integrity provides data assurance (unaltered data) via hashing technique. What does authentication provide, and using what technique?
*Correct Answer:* Authentication provides data origin authentication (message authentication) using digital signatures and certificate mechanism (PKI). PSK is not a option? -- Bruno Fagioli Cisco Security Professional
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
