How does the DAGR manage power consumption during operations?

The correct answer reflects that the DAGR (Defense Advanced GPS Receiver) effectively manages power consumption by switching to standby mode. This is a crucial feature because during operations, the DAGR may not always need to be in active use, saving battery life for when it is most necessary.

Standby mode allows the device to reduce its energy use significantly while still being able to quickly resume normal operations when needed. This effectively extends the operational lifespan of the DAGR's battery, which is key for military personnel who rely on it in varied and often austere environments.

In contrast, the other options do not provide an effective means of power management. Increasing signal strength typically requires more battery power rather than conserving it. Limiting functionality might reduce energy use but may compromise the device's capabilities, which is not the primary method used for power management. Lastly, while solar energy is an appealing alternative for power, the DAGR does not primarily rely on this method to manage its energy needs during operations.