Core enterprise networking, updated for Cisco 350-401 ENCOR v1.2 (live March 19, 2026): architecture (Catalyst SD-WAN, SD-Access, QoS), virtualization, infrastructure (L2/L3, IP services incl. PTP, multicast with SSM/Bidir/MSDP), network assurance (Catalyst Center with AI-powered workflows, NETCONF/RESTCONF), security, and automation & AI (Python, JSON, YANG, APIs, EEM). Wireless was removed from ENCOR in v1.2 and is kept here only as optional background. Assumes CCNA-level knowledge. — Independent exam-prep by TW Academy; not affiliated with or endorsed by Cisco Systems, Inc. Names/marks shown are the property of their respective owners and used for identification only. All practice questions are original; passing does not guarantee certification.