Which of the following components is NOT part of GPT?

The correct choice identifies the component that is not part of the GUID Partition Table (GPT) structure. In GPT, the components that are typically included consist of the Backup Partition Entry Array, Primary Partition Entry Array, and Protected Master Boot Record.

The Backup Partition Entry Array holds backup entries of the partitions and is located at the end of the disk, ensuring redundancy. The Primary Partition Entry Array sits at the beginning of the disk and contains entries for each partition on the drive. The Protected Master Boot Record ensures backward compatibility with older systems that may not recognize GPT, allowing them to read the disk without corrupting the data.

In contrast, Partition Boot Code is not a component of GPT. Instead, it's a concept associated with other partitioning schemes like the Master Boot Record (MBR), where boot code is utilized to launch operating systems from the disk. Therefore, while the other components are integral to the GPT architecture, Partition Boot Code does not have relevance in the GPT setup. This distinction clarifies why it is the correct answer to the question.