CCIE Automation and Programmability Flashcards

What does the Cisco DNA Center API use as its primary authentication mechanism?

Answer: OAuth 2.0 bearer token obtained via /dna/system/api/v1/auth/token

Cisco DNA Center API uses token-based authentication where a POST to /dna/system/api/v1/auth/token returns a time-limited JWT token for subsequent API calls.

Which streaming telemetry protocol provides real-time operational data using a publish-subscribe model from Cisco IOS-XE?

Answer: gRPC/gNMI model-driven telemetry

gRPC-based gNMI (gNMI Subscribe) provides high-frequency, low-overhead streaming telemetry from IOS-XE, pushing YANG-modeled data to collectors in real time.

In network automation, what is Infrastructure as Code (IaC) primarily about?

Answer: Managing network configuration using version-controlled declarative definitions

IaC treats network configurations as code stored in version control, enabling reproducible, auditable, and consistent infrastructure deployments.

What is the purpose of Cisco Catalyst Center's (DNA Center) Intent API?

Answer: Abstracting network operations into business intent-level REST APIs

The Cisco Catalyst Center Intent API provides abstracted, business-level REST APIs for network operations without requiring device-level configuration knowledge.

In Ansible network automation, which connection plugin is used for NETCONF-based device management?

Answer: ansible.netcommon.netconf

The 'ansible.netcommon.netconf' connection plugin enables Ansible to communicate with network devices using the NETCONF protocol over SSH.

What is the role of a YANG 'typedef' statement in data modeling?

Answer: Creating a reusable custom type derived from a base type with constraints

A YANG 'typedef' creates a named, reusable custom data type derived from a base type (e.g., string with pattern constraints), promoting consistency across models.