What is the primary function of the ADSI server?

• A. Relays voice communications to units
• B. Receives and transmits data link messages
• C. Stores radar trace history
• D. Encrypts all operator passwords

Answer: (D)

Security and access control is what the ADSI server must manage. Its primary role is to protect operator credentials by encrypting passwords, ensuring that login information isn’t exposed and that only authorized users can access the ADSI and the broader air defense network it supports. This safeguards the ability to share data and operate the system, since unsecured passwords could let an intruder gain access to sensitive controls and information. Other functions described, like relaying voice communications, handling data link messages, or storing radar trace history, are tasks handled by specialized subsystems rather than the ADSI server. Encrypting operator passwords is essential to prevent credential compromise and maintain the integrity of the whole command-and-control environment.