Brain Dump
187 / 187 entriesNetwork Architecture
Two-tier, three-tier and spine-leaf: how core, distribution and access switches stack up, and when a network outgrows the simple designs.
Fully Qualified Domain Names
A fully qualified domain name pins down the exact location of a resource in DNS. Here's how the labels stack up, and how it differs from a URL.
Understanding the Default Route
A default route is the catch-all a router falls back to when it has no specific path — usually written as 0.0.0.0/0 and pointed at a next hop.
Dividing a Broadcast Domain
Routers, VLANs, layer 3 switches, subnetting and firewalls — the five practical ways to split a broadcast domain and why you would.
Data Link Layer
The data link layer moves frames across a single link — MAC addressing, the MAC table, CSMA/CD, broadcast domains, and ARP, explained.
CS50 Python: Week 1
My solutions to the CS50 Python week 1 problem sets — the Deep Thought answer and a bank greeting that pays out based on how you say hello.
CS50 Python: Week 0
My solutions to the CS50 Python week 0 problem sets — lowercase input, playback speed, emoticon conversion, E=mc² and a tip calculator.
Networking Cables
Copper Ethernet and fiber optics, from CAT grades and plenum cabling to single-mode vs multi-mode fiber and why the core diameter matters.
TCP/IP and OSI in networking
Computer networking involves the interconnection of devices and systems for communication and resource sharing, enabling data transfer and access across various networks.