This is where the operating system is saved. Every time that the switch boots up, the flash memory will be accessed to load the OS into the running memory.

This is where the operating system is saved. Every time that the switch boots up, the flash memory will be accessed to load the OS into the running memory.

• A. RAM
• B. Flash Memory
• C. ROM
• D. NVRAM

Answer: (B)

The operating system image is stored in flash memory because it must persist across power cycles and be updatable. When the switch boots, the system reads the OS from flash into RAM so it can run quickly in working memory. RAM holds data only while power is on, so it isn’t suitable for keeping the OS across reboots. ROM usually contains fixed firmware that isn’t updated regularly, and its role isn’t to store the full OS image. NVRAM is used for configuration data that must persist, not for housing the entire OS. So flash memory is the proper place to save the OS image to be loaded into RAM at boot.

The operating system image is stored in flash memory because it must persist across power cycles and be updatable. When the switch boots, the system reads the OS from flash into RAM so it can run quickly in working memory. RAM holds data only while power is on, so it isn’t suitable for keeping the OS across reboots. ROM usually contains fixed firmware that isn’t updated regularly, and its role isn’t to store the full OS image. NVRAM is used for configuration data that must persist, not for housing the entire OS. So flash memory is the proper place to save the OS image to be loaded into RAM at boot.