Understand Your
WiFi Network.
From the fundamentals of wireless technology to advanced networking concepts — everything you need to become your own network expert.
How WiFi Actually Works
WiFi is a family of wireless protocols based on IEEE 802.11. It uses radio waves on 2.4GHz, 5GHz, and 6GHz bands. Modern WiFi 6 uses OFDMA, serving multiple devices simultaneously on different sub-carriers.
Your router translates between wireless and wired worlds — receiving WiFi signals, decoding to digital data, and forwarding to your ISP. The reverse happens for incoming data.
WiFi Standards Evolution
Latency vs Bandwidth
Bandwidth = highway width (how many cars). Latency = speed limit (how fast each car). 100 Mbps with 200ms latency feels slow; 10 Mbps with 5ms feels snappy.
Jitter — variation in latency — is often more disruptive than consistently high latency. It causes audio glitches in calls and rubber-banding in games.
Mesh Networks Explained
Traditional WiFi uses a single router. Mesh networks distribute multiple nodes with dedicated wireless backhaul, providing seamless roaming and full-speed connectivity everywhere.
For homes over 2,000 sq ft or multiple floors, mesh systems (Google Nest, Eero, TP-Link Deco) are almost always the right choice over a single router.
Frequently Asked Questions
Quick answers to the most common networking questions.
Speed tests measure peak throughput. Real-world browsing depends on DNS, server response, distance, and congestion. Always test on the specific device having issues.
5GHz for bandwidth-intensive tasks near the router. 2.4GHz for IoT devices and distant rooms. Enable band steering to let the router decide automatically.
Every 2-4 weeks. Unplug for 30 seconds for a full reset. Clears memory leaks and refreshes connections.
Mbps = megabits per second (network speeds). MBps = megabytes per second (file sizes). Divide Mbps by 8 to get MBps. 100 Mbps ≈ 12.5 MBps download speed.
Typically 10-30%. VPNs add encryption overhead. WireGuard is fastest. Privacy benefits usually outweigh performance cost.
Compare speeds at different times. Try a VPN — if speeds are faster through VPN, your ISP likely throttles specific traffic types.