Which of the following refers to the data that is stored or processed by RAM,...

Data in Use refers to data that is actively being processed by the system, including data stored in RAM, CPUs, or databases during computation. This data is currently in memory and being accessed or manipulated by applications, making it vulnerable to attacks that target active processes, such as memory scraping or CPU-based attacks.

Data at Rest: Data stored on disk or other persistent storage media.

Data in Transit: Data being transferred over a network.

Data in Backup: Data stored in backup storage for recovery purposes.

References:

EC-Council Certified Network Defender (CND) Study Guide

Data lifecycle and security documentation