DNS & DHCP

How devices get an IP address automatically, and how domain names get resolved into one.

Read

45 min

Practice MCQs

25

Interview QA

25

Edition

v4

Editorial status

Reviewed

Relevant for

Network Engineer

Scope: Current IETF DNS, negative caching, DNSSEC, DNS over TCP/TLS/HTTPS, DHCPv4/options/relay, DHCPv6, SLAAC, and mDNS references reviewed 2026-09-04.