In the context of ServiceNow Discovery, which statement is true about existing discovery tools?

The statement about existing discovery tools that identifies all service components based on IP address ranges is correct because many discovery tools utilize IP address ranges as a means to scan the network for devices and services. By scanning these ranges, tools can detect various networked components and gather information on what is present within the specified range. This is crucial in understanding the infrastructure and services that exist in a given environment, allowing for an automated inventory of assets without extensive manual input.

Moreover, using IP address ranges enables discovery tools to systematically probe each address to check for active devices, leading to a comprehensive mapping of the network landscape. This approach is foundational in network discovery and is commonly employed by various tools in the industry for asset management and monitoring purposes, reinforcing the importance of IP ranging in the discovery process.

The other options, while they present aspects of discovery tools, do not accurately align with the common functionalities provided by existing tools in the context of ServiceNow Discovery.