CCNA Implementing and Administering Cisco Networking Technologies (200-301) Practice Test 2025 - Free CCNA Practice Questions and Study Guide

FLASH memory in a Cisco switch is a type of non-volatile storage, meaning it retains its data even when the device is powered off. This characteristic is crucial because it allows the switch to store important files that need to persist across reboots. Among the types of data that FLASH can store, IOS images are critical as they are the operating system files that the switch runs on. Additionally, FLASH memory can also hold other types of files utilized by the device, including configuration files, backup files, and various other files necessary for its operation.

Unlike volatile memory, which loses data when power is lost, FLASH’s non-volatile nature ensures that all stored data is available every time the device is turned on. This makes it integral to the functionality of Cisco devices used in networking environments. The ability to store IOS images and potentially other files highlights its importance in maintaining the operational state of the switch upon power cycling.