Which management protocol is tightly coupled with YANG?

The management protocol that is tightly coupled with YANG is NETCONF. NETCONF, which stands for Network Configuration Protocol, is designed for installing, managing, and deleting the configuration of network devices. It provides a rich set of capabilities for working with configurations in a consistent manner across different devices.

YANG, which stands for Yet Another Next Generation, is a data modeling language used to model the configuration and state data manipulated by NETCONF. It defines the schema for the data that can be managed through NETCONF, allowing users to create consistent interfaces for network management across devices from different vendors. The relationship between NETCONF and YANG enables automated management and orchestration of network elements, facilitating better integration and interoperability.

In contrast, RESTCONF is also a protocol that leverages YANG, but it operates over HTTP and is more aligned with RESTful principles. SNMP (Simple Network Management Protocol) is an older protocol that does not utilize YANG and focuses primarily on monitoring rather than configuration. HTTP is a foundational web protocol and does not inherently relate to YANG or network management. Thus, NETCONF's close association with YANG makes it the correct choice.