Cisco Updated 400-007 Exam Questions and Answers by stella

The IoT ecosystem continues to evolve around industry-wide agreements on protocols, frameworks, security, interoperability, and standards:

D: Multiple IoT consortia (such as Industrial Internet Consortium, Open Connectivity Foundation, etc.) are still developing open frameworks and interoperability models.

E: IoT standards for security, data privacy, management, and protocol interoperability are still maturing as the market rapidly evolves.

Why other options are incorrect:

A: Wi-Fi protocols (such as 802.11ax) are already mature and standardized for IoT.

B: Regulatory domains (frequency allocations, power levels) are already well-established.

C: Low-energy Bluetooth sensors are already standardized and widely implemented.

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Ansible is an open-source automation tool that enables configuration management, application deployment, cloud provisioning, and orchestration.

It uses simple YAML-based playbooks and SSH-based connectivity, making it agentless, highly scalable, and easy to integrate with networking environments.

Commonly adopted in network automation, cloud infrastructure provisioning, and service orchestration as part of modern network design practices covered under CCDE v3.1.

Why other options are incorrect:

B (Contrail): Network virtualization platform, not primarily an automation tool.

C (Java): General-purpose programming language, not specifically designed for infrastructure automation.

D (Jinja2): Templating engine, used inside Ansible but not an automation tool by itself.

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C (NFV - Network Functions Virtualization):ETSI NFV framework allows virtualizing network functions (firewalls, load balancers, etc.) on standard hardware, promoting flexibility, cost reduction, and hardware independence.

Other options explained:

A: NPIV relates to Fibre Channel storage, not network virtualization.

B: NFVIS is Cisco's NFV infrastructure software, not the ETSI standard itself.

D: VNF refers to individual virtualized functions, not the framework.