Which type of DVI connector is not compatible with analog signals?

The DVI-D connector is specifically designed for digital signals only, meaning it cannot transmit analog signals. DVI-D stands for "Digital Visual Interface - Digital," and it facilitates the connection of digital displays (such as LCD or digital projectors) directly to a digital graphics card, ensuring a pure digital connection without any analog conversion.

In contrast, DVI-I (Integrated) supports both digital and analog signals, allowing it to connect to a broader range of equipment. DVI-A (Analog) is designed exclusively for analog signals, while DVI-C is not a standard type of DVI connector. Therefore, the inability of DVI-D to handle analog signals makes it the correct answer. This design is crucial for maintaining the integrity and quality of the digital signal as it eliminates potential degradation from analog connections.