Explanation: An Inmarsat Fleet Broadband IP handset is a peripheral device that connects to the main Fleet Broadband terminal. It functions like a standard VoIP phone. * **D) Provides the terminal with Power over Ethernet.** This is incorrect. Power over Ethernet (PoE) describes a system where network cables can carry electrical power to *powered devices* (PDs) from *power sourcing equipment* (PSEs), such as network switches or the main terminal itself. A small handset would *receive* power via PoE from the terminal (if the terminal supports it), not provide power *to* the larger, more complex terminal. The main terminal is the primary power consumer and data hub for the satellite connection. * **A) Ability to transmit telephone calls as circuit-switched calls.** This is correct. While the handset itself might communicate with the terminal using IP (VoIP), the Inmarsat Fleet Broadband system supports both IP data (packet-switched) and traditional voice/SMS (circuit-switched) services over the satellite link. The terminal facilitates these circuit-switched voice calls. * **B) Displays menu options to configure the terminal.** This is correct. Like most smart devices or satellite phone interfaces, an IP handset would typically have a display and menu system to access settings, check status (signal strength, registration), and configure certain aspects of its operation or the terminal's. * **C) Uses TCP/IP to communicate with the terminal.** This is correct. The "IP" in "IP handset" signifies that it uses Internet Protocol (TCP/IP or UDP/IP for real-time voice) to exchange data and voice with the main Fleet Broadband terminal over the local network connection (often Ethernet).