Which two northbound APIs are found in an SDN? (Choose two.)

Northbound APIs allow applications and orchestration systems to communicate with the SDN controller, providing a way to program and manage the network. REST (Representational State Transfer) and SOAP (Simple Object Access Protocol) are two common protocols used for these northbound interfaces. They enable higher-level applications to request network services and policies from the controller. OpenFlow is a southbound API, used for communication between the SDN controller and network devices (like switches). NETCONF and OpFlex are also southbound APIs, designed for configuring and managing network devices. They facilitate the controller's ability to instruct the underlying network infrastructure.