Tech Docs
-
Large networks can learn hundreds or thousands of routes. Route summarization lets a router advertise one broader route that represents several smaller, contiguous networks. The result can be a smaller routing table and a cleaner routing design. This engineering lesson builds on OSNEC.001: OSPF Fundamentals. Here, the focus is the underlying summarization calculation before applying…
-
Learn how the Linux id command displays a user’s UID, primary GID, and supplementary groups for fast permissions troubleshooting.
-
A six-foot humanoid built for factories is now being pitched for one of the most unforgiving workplaces on Earth: the battlefield. Foundation Future Industries’ Phantom MK-1 is a roughly human-sized black humanoid the company is developing for defense and industrial work. NBC News put the machine in the national spotlight this week, showing Phantom walking,…
-
Armv8-M is a 32-bit processor architecture designed for microcontrollers, embedded systems, IoT devices, industrial controllers, secure hardware, sensors and other systems where low power consumption, deterministic behavior and a relatively small silicon footprint are important. It belongs to Arm’s M-profile architecture family, rather than the higher-performance A-profile used by application processors or the R-profile designed…
-
Learn how Python classes act as blueprints, how objects store their own attributes, and how methods add reusable behavior.
-
OSPF stands for Open Shortest Path First. It is an open-standard link-state interior gateway protocol used by routers to learn network topology and calculate routes inside an autonomous system. This is the first Open-Source Networking Engineer Certification (OSNEC) lesson. The technician pathway teaches device addressing and verification; the engineer pathway now moves into routing behavior,…
-
A MAC address, short for Media Access Control address, identifies a network interface on a local network. You will commonly see it written as six pairs of hexadecimal characters, such as 3C:52:82:1A:4F:90. In OSNTC.001, you learned that an IP address identifies where a device communicates on an IP network. A MAC address serves a different…
-
A satellite launched today carrying a strange proposition for the future of energy and computing: collect sunlight in orbit, turn it into a laser, and aim that energy back toward Earth. Cowboy Space’s Reason-1 rode to orbit on SpaceX’s Transporter-18 mission. The spacecraft is intended to attempt a kilowatt-class laser power-beaming experiment from low Earth…
-
Quantum computing does not have an NVIDIA yet. It does not even have agreement on what the winning quantum transistor should look like. That is what makes the industry unusually interesting in 2026. Billions of dollars are flowing into machines built around radically different physical ideas: superconducting circuits cooled near absolute zero, trapped ions suspended…
-
Applied Materials and Besi are expanding their AI packaging partnership into next-generation hybrid bonding, TCB, die-on-panel integration and photonics-enabled interconnects.
-
A string is text stored in a program. In C++, std::string can hold words, player names, messages, and labels. Unlike the numbers we stored in OSC++.012, a string stores a sequence of characters. This is a new subject, not another vector lesson. 1. Make a String The #include <string> line makes the standard string type…
-
WatchGuard patched CVE-2026-86131, a critical Fireware OS flaw that can let an attacker-controlled BOVPN-over-TLS server execute root commands on a connecting Firebox.
