Final answer:
A major drawback of local database security methods is the complex management of multiple user accounts, which can be resolved through the more streamlined approach of AAA with centralized servers, improving security and reducing system failure risks.
Step-by-step explanation:
One significant drawback of using a local database method for securing device access is the difficulty in managing multiple user accounts and permissions across various systems. This challenge can be effectively solved by implementing AAA (Authentication, Authorization, and Accounting) with centralized servers. Centralized AAA servers streamline the management process by providing a single point of control, thereby enhancing security protocols and reducing the risk associated with decentralized management of credentials.
Furthermore, centralized servers reduce the potential for system failure and vulnerability to attacks by consolidating the security infrastructure. This enables better oversight and quicker responses to any breaches or issues that arise, ensuring higher levels of operational reliability and safety in contrast to local database systems.