Cisco Updated 350-401 Exam Questions and Answers by izaan

The Cisco DNA Center application responsible for group-based access control permissions is the Policy application. This application allows network administrators to define and enforce security policies across the network. It provides micro-level segmentation, enabling control over the types of network traffic permitted or denied between different groups, such as engineering and HR. The Policy application simplifies policy management by applying security groups to all virtual networks and providing a clear view of the overall policy structure.

References := Cisco DNA Center User Guide

YANG (Yet Another Next Generation) is a data modeling language used to model configuration and state data manipulated by the Network Configuration Protocol (NETCONF), protocol operations, and notifications for network management protocols. It provides a clear, hierarchical structure with support for configuration data, RPC operations, and notification events.

The Python code snippet provided is using a library to establish an SSH connection to a Cisco device. The ‘exec_command’ function is then used to execute a ‘show bgp’ command, which is typically used to display the Border Gateway Protocol (BGP) table for a specific prefix. The output of this command would provide information about the BGP routing entries for that prefix.

Implementing a Cisco SD-WAN architecture offers several advantages, particularly in terms of security and application-aware networking.

Security Integration: Cisco SD-WAN integrates both embedded and cloud security features, enhancing endpoint protection. This integration allows for a more robust security posture that can adapt to the evolving threat landscape. The architecture transforms Cisco routers into advanced security devices with an enterprise firewall, intrusion prevention system (IPS), URL filtering, and continuous DNS monitoring, ensuring end-to-end protection.

Application-Aware Policies: Cisco SD-WAN enables the configuration of application-aware policies that are enforced in real-time. This capability ensures that critical applications receive the necessary bandwidth and performance, even in complex network environments. It allows for intelligent path selection based on the application’s needs, improving overall application performance and user experience.