Which two constructs appear in YANG data models?

YANG (Yet Another Next Generation) is a data modeling language used to define the configuration and state data of network devices. The rpc (Remote Procedure Call) statement defines operations that can be invoked on the device, such as rebooting or clearing counters. The container statement is a grouping mechanism that organizes related data nodes into a hierarchy, improving readability and structure. HTTP return codes, JSON schema, and XML schema are not constructs within YANG itself. HTTP return codes are part of the HTTP protocol. JSON schema and XML schema are separate data description languages, though YANG models can be translated into these formats for data exchange.