Network

Basics

• IPs are device addresses
• DNS resolves names to IPs (e.g., nslookup google.com)
• Subnets divide networks (e.g., CIDR blocks like 10.0.0.0/24)
• VLANs provide logical isolation via tagging (e.g., ip link add link eth0 name eth0.10 type vlan id 10)