Cognitive Project Management for AI (CPMAI) Practice Exam 2026 - Free CPMAI Practice Questions and Study Guide

The correct answer is indeed that 1,000 zettabytes equal 1 yottabyte. To understand this, it's essential to know the hierarchy of data measurement units.

Data storage units scale up by powers of ten (in decimal), where each step is a multiple of 1,000. Here’s the order from smaller to larger units:

- 1 terabyte (TB) is equal to 1,000 gigabytes (GB).

- 1 petabyte (PB) is equal to 1,000 terabytes.

- 1 exabyte (EB) is equal to 1,000 petabytes.

- 1 zettabyte (ZB) is equal to 1,000 exabytes.

- 1 yottabyte (YB) is equal to 1,000 zettabytes.

So, if you have 1 zettabyte, multiplying it by 1,000 gives you 1 yottabyte. Therefore, when you look for a unit that equals 1,000 zettabytes, the proper conversion leads you to yottabytes.

This hierarchical knowledge of data size is crucial in domains that deal with vast amounts of data, particularly in AI and data management, as it helps in