Configure network devices with local usernames and as an AAA client (TACACS+ and RADIUS) for management
Manage device configuration and software files using secure file transfer operations with SFTP/SCP
Configure NAT/PAT on IOS XE routers
Diagnose issues with DNS records (A, AAAA, CNAME, MX, NS, and PTR) to support host, web application, and mail server access by name
Describe IPsec remote access and site-to-site VPNs (protocols and transport modes)
Configure IPv4 access control lists (standard, extended, numbered, and named ACLs)
Configure Layer 2 security features — DHCP snooping, dynamic ARP inspection, storm control, RA guard, and port security
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