DNS and DHCP Fundamentals Questions

Focused understanding of name resolution and automatic address assignment systems and how they affect connectivity and system configuration. Topics include Domain Name System concepts such as name resolution, resource records, zones, delegation, caching behavior, authoritative versus recursive resolution, and common resolution failure modes. It also covers Dynamic Host Configuration Protocol concepts such as lease lifecycle, scopes and pools, address assignment modes, lease renewal and release, and interactions with network boot and provisioning systems. Practical troubleshooting techniques are emphasized, including diagnosing failed resolution, inspecting caches, examining DHCP lease information, using diagnostic tools and commands such as nslookup and dig, and resolving client configuration issues that impact network connectivity. The description also covers how these services are deployed in small and large environments, security and operational considerations, and how name and address services integrate with other networking and application components.