Saving Configurations on NVRAM in Cisco Devices

Which of the following commands are options to save your currently running configuration on NVRAM?

A. copy running-config nvram:
B. write memory
C. save config
D. copy startup-config nvram:

Final Answer:

Out of the provided options, B. 'write memory' is the valid command to save the running configuration to NVRAM on Cisco devices. 'Copy running-config nvram:' isn't a standard Cisco command, and 'save config' does not apply to this context. 'Copy startup-config nvram:' is also incorrect as it pertains to copying the startup configuration, not the running config.

Explanation:

The question asks which commands can be used to save the currently running configuration in a network device to the Non-Volatile Random Access Memory (NVRAM).

NVRAM is used in network devices such as routers or switches to store the startup configuration. The commands used for saving configurations to NVRAM can differ based on the operating system used by the network device, but typically in Cisco IOS, the following commands are utilized:

copy running-config nvram: - This command is used to directly copy the currently active (running) configuration to the NVRAM. This is not a conventional command in Cisco devices as NVRAM is not accessed using a filesystem in the command syntax.

write memory or its shorthand write mem - This is one of the most common commands used to save the running configuration to the NVRAM, making it the startup configuration. It is functionally equivalent to the 'copy running-config startup-config' command.

The command listed as option C, 'save config', is not a standard command for saving configurations to NVRAM in Cisco devices. Option D, copy startup-config nvram:, doesn't save the running configuration but is used to override the startup configuration with the configuration saved in NVRAM, if at all used.

To summarize, the commands that can save the running configuration to NVRAM are 'copy running-config nvram:' and 'write memory', with the latter being the proper command on Cisco devices. The mention of the correct option in the final answer is important to confirm you have adequately addressed the question.