Multiple choice

In a Cisco device, where is the IOS file stored prior to system startup?

  1. RAM

  2. ROM

  3. Flash

  4. NVRAM

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Cisco IOS is stored in Flash memory, which is non-volatile EEPROM. During bootup, IOS is copied from Flash to RAM where it actually runs. ROM contains bootstrap code, NVRAM stores startup-config, and RAM runs the operating system but doesn't store it persistently.