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Q6. Which of the following are internal configuration components of a Cisco Router? [Select all that apply].
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A. RAM/DRAM B. ROM C. NVRAM D. Flash Memory
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Correct answer: E
Explanation:
Internal configuration components of a Cisco(R) router include the following:
ROM (Read Only Memory); Memory containing micro-code for basic functions to start and maintain the router. ROM is not typically used after the IOS is loaded. RXBOOT is located here.
RAM/DRAM : stores the running configuration, routing tables, and packet buffers. Some routers, such as the 2500 series, run IOS from Flash, not RAM.
NVRAM (Non-Volatile Ram): Memory that does not lose information when power is lost. Stores the system’s configuration file and the configuration register. NVRAM uses a battery to maintain the data when power is turned off.
Flash Memory: Stores the compressed IOS (IOS stands for Cisco Internetwork Operating System) image. Flash memory is either EEPROM or PCMCIA card. Flash memory enables you to copy multiple versions of IOS software. This allows you to load a new lever of the operating system in every router in your network and then, to upgrade the whole network to that version at a convenient time.
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