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Your organization is integrating its legacy application with Vault to improve its security. However, you have discovered that the application has issues when the token changes for authentication during testing. What type of token could be used to help alleviate this issue without compromising security?
Correct Answer: A
Comprehensive and Detailed In-Depth Explanation: Periodic Service Tokens allow renewal without changing the token, addressing the application's issue. The Vault documentation states: "In some cases, having a token be revoked would be problematic -- for instance, if a long-running service needs to maintain its SQL connection pool over a long period of time. In this scenario, a periodic token can be used. The idea behind periodic tokens is that it is easy for systems and services to perform an action relatively frequently -- for instance, every two hours, or even every five minutes. Therefore, as long as a system is actively renewing this token -- in other words, as long as the system is alive -- the system is allowed to keep using the token and any associated leases." -Vault Concepts: Tokens * A: Correct. Periodic tokens maintain stability with renewal: "A Periodic Service Token is a type of token in Vault that can be renewed periodically without the need for the application to re-authenticate every time the token changes." -Vault Concepts: Tokens * B: Root tokens are insecure for applications due to unlimited access: "Root tokens should not be used for application authentication due to their high level of access and security risks." -Vault Concepts: Tokens * C: Orphan tokens don't support periodic renewal inherently. * D: Batch tokens cannot be renewed: "Batch tokens cannot be renewed." -Vault Tutorials: Batch Tokens References: Vault Concepts: Tokens