: This denotes the type of IOS image.
Its steel chassis was scarred with the light scuffs of a decade of service. To a casual observer, it was just a "pizza box" with blinking green lights. But to the network engineers who had kept it alive, it was known by its digital soul: c2800nm-adventerprisek9-mz.152-4.M7.bin The Legend of the "Adventerprise"