What best describes a client/server protocol that allows remote servers to authenticate users by communicating with a central server to another server or service?
  1. Kerberos
  2. LDAP
  3. RADIUS
  4. XTACACS
Explanation
Answer: C - RADIUS allows users to authenticate remotely

Key Takeaway: RADIUS, or Remote Authentication Dial In User Service, allows devices or users to authenticate to a network or network service. RADIUS allows for this authentication to be centralized. RADIUS also is capable of auditing the use of the network services.
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