Which command configuration could help a network engineer avoid redundancy in configuration settings?

The choice of "replace pattern" as the correct command configuration for avoiding redundancy in settings is based on its functionality in effectively managing and modifying configuration files by replacing specific text patterns throughout the configuration. When a network engineer identifies repetitive configurations or entries that need to be adjusted, employing the "replace pattern" command allows for systematic changes across multiple instances instead of manual tweaks, which can be error-prone and time-consuming.

Utilizing this command enables the network engineer to streamline configurations and ensure consistency across devices or settings. This is particularly useful in larger environments where multiple devices may require uniform settings.

In contrast, the other options, while they may serve different purposes, do not directly address the need to minimize redundancy. Grouping interfaces and configuring groups can assist with organization and management but do not inherently reduce the need for multiple configurations. The command to delete all would remove settings rather than consolidate or streamline them, hence is not suitable for avoiding redundancy but rather for clearing existing configurations.