Critical Infrastructure: DNS, DHCP & Load Balancing

The Hidden Gears of the Internet

When users type a URL, a complex dance of infrastructure services begins. Phase 3 demystifies these protocols.

DNS (Domain Name System)

DNS is the phonebook of the internet. Our BIND-style simulator lets you:

• Add Records: Create A, SH, and CNAME records.
• Debug: Use dig and nslookup to trace resolution paths.
• Zone Files: View named.conf to understand zone configuration.

DHCP (Dynamic Host Configuration Protocol)

Without DHCP, every IP would need manual entry. Learn the DORA process (Discover, Offer, Request, Acknowledge) and manage leases dynamically.

Load Balancing

High availability requires distributing traffic. Our Load Balancer simulator demonstrates Round Robin algorithms and health checking backend servers to ensure 100% uptime.