networking

5 articles · All tags

• How Wi-Fi Works
  How wireless LANs encode data onto radio waves — channels, modulation, collisions, and why your Wi-Fi speed depends on walls, neighbors, and channel width.
• Subnetting and CIDR
  Dividing IP address space into subnets and the Classless Inter-Domain Routing notation that replaced rigid classful addressing.
• TCP Congestion Control
  The mechanisms that let TCP share network capacity fairly, adjusting each connection's sending rate in response to congestion signals.
• TCP Three-Way Handshake
  The three-message exchange TCP uses to open a reliable connection and synchronize sequence numbers between two hosts.
• Domain Name System
  The hierarchical, distributed naming system that maps human-readable domain names to IP addresses and other network records.