Notes

Collection of notes by Karthik Kadambi.

Dec 28, 2026

A VPN creates an encrypted tunnel to protect traffic and provide secure remote access and privacy.

Jan 11, 2026

Border Gateway Protocol (BGP) determines routing between large networks and keeps the global internet connected.

Jan 10, 2026

IPv6 replaces IPv4 with a vastly larger address space and improved routing efficiency.

Jan 07, 2026

WebSockets provide persistent, two-way connections for real-time web communication.

Jan 04, 2026

Caching stores frequently used data temporarily to speed up load times and reduce bandwidth.

Jan 03, 2026

A proxy intermediates client-server communication for caching, security, traffic control, or anonymity.

Dec 31, 2025

Load balancing spreads traffic across servers to improve reliability, prevent overload, and enable scaling.

Dec 27, 2025

A Content Delivery Network (CDN) caches and serves content from locations near users to reduce latency.

Dec 24, 2025

Firewalls filter and control network traffic to enforce security boundaries and block threats.

Dec 21, 2025

DHCP automatically assigns IP configuration (address, gateway, DNS) to devices on a network.

All Notes