What type of command is used to restore a default configuration A. System command B. Configuration command C. Tool command D. Undo command

To determine the correct answer regarding the command used to restore a default configuration, let’s analyze the options:

1. System command - This typically refers to commands that affect the overall system settings but does not specifically imply restoring to defaults.

2. Configuration command - This is generally associated with settings and parameters configuration but does not inherently mean restoration of defaults.

3. Tool command - This option usually denotes specialized commands within software applications, not specifically for restoring configurations.

4. Undo command - This command is meant for reverting the last change or action but does not specifically restore to a default configuration.

Conclusion

The option that most commonly refers to returning settings to their original state in networking and computer configuration contexts is often associated with "Configuration command." However, depending on specific systems, the exact terminology may vary. If in the context of Cisco devices, for example, commands like write erase or reload could be involved as well.

Final Answer

B. Configuration command