[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] U-NII (unlicensed national information infrastructure) bands undebug all command undetected modems, troubleshooting uninstallation PrepLogic Practice Exams, Preview Edition uninteresting traffic 2nd unknown modem types, configuring automatically 2nd unlicensed national information infrastructure (U-NII) bands upstream (US) transmissions US (upstream) transmissions username command users authentication CHAP (Challenge Handshake Authentication Protocol) 2nd 3rd 4th 5th PAP (Password Authentication Protocol) |