A technician would like to upgrade a server with a Socket LGA1155 Xeon processor. Which of the following processors is compatible with this server?

The P4 (Pentium 4) processor uses much older sockets like Socket 423, 478, or LGA 775, none of which are compatible with LGA1155.

Celeron D processors typically used sockets such as LGA 775, which is not compatible with LGA1155.

Athlon processors are manufactured by AMD and use AMD-specific sockets (e.g., AM3, AM4), making them incompatible with Intel's LGA1155 socket.

Intel Core i5 processors from generations such as Sandy Bridge and Ivy Bridge were designed for and are compatible with the Socket LGA1155. This socket type supported both consumer-grade Core processors and specific server-grade Xeon processors.