What are two benefits of YANG? (Choose two.)

What are two benefits of YANG? (Choose two.)
A . It enforces the use of a specific encoding format for NETCONF.
B . It collects statistical constraint analysis information.
C . It enables multiple leaf statements to exist within a leaf list.
D . It enforces configuration semantics.
E . It enforces configuration constraints.

View Answer

Answer: C, E

Explanation:

YANG (Yet Another Next Generation) is a data modeling language used to model configuration and state data manipulated by the Network Configuration Protocol (NETCONF), one of the network management protocols.

The benefits of YANG include:

Enabling multiple leaf statements within a leaf list ©: YANG allows for the definition of multiple ‘leaf’ elements within a ‘leaf-list’, which represents a sequence of list elements. This structure enables the modeling of multiple instances of a particular type of data.

Enforcing configuration constraints (E): YANG provides mechanisms to define constraints on the data that can be input, ensuring that the configuration data adheres to the defined schema. This includes mandatory fields, value ranges, and patterns that must be followed.

YANG’s design allows for a vendor-neutral approach to defining the objects, data types, and their relationships when mapping device operational and configuration data to usable programmatic entities. This facilitates a unified and standardized method of representing network configurations, making it easier to manage and automate networks.

References: The explanation provided is based on the information from the Cisco official documentation on YANG, which outlines its primary benefits and use cases in network configuration and management.