Which command is used to copy the startup configuration to a TFTP server?

The command used to copy the startup configuration to a TFTP server is implemented through the correct syntax, which specifies the source and destination appropriately for the task at hand. In this case, the correct command initiates the copying process from the startup configuration file, which is stored in the non-volatile memory, to a TFTP server.

The structure typically involves identifying the "startup" as the source configuration and "tftp" as the destination, which in this context is key for accurately directing where the configuration should be sent. The operational flow ensures that the device knows to transmit the startup configuration to a specified TFTP server's address when prompted.

In contrast, the other options do not align with this operational requirement. For instance, commands that misidentify the source or mislabel the destination—like referencing "run" instead of "start"—would not achieve the desired outcome of backing up the startup configuration effectively to TFTP. Thus, the correct command is essential for ensuring that configurations can be preserved and restored if necessary.