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9 blocks

TechEnglish

LEGv8: Machine Code, Registers & Subroutines

The machine code trips up more students than the assembly itself. Hex/binary conversion, MOVZ vs MOVK, immediate-value limits, and translating real bit patterns to assembly and back — practice built for 1DT301's labs and exam.

#legv8 #arm #assembly

15 blocks

#raspberry-pi-pico #embedded-systems #interrupts

TechEnglish

RPi Pico: Interrupts, GPIO & Computer Architecture

Polling vs interrupts, the IRQ vector, PC/LR/SP, and the buses that move data around a CPU — the theory half of 1DT301's Pico labs, the part that is easy to skip past while your LEDs are blinking.

12 blocks

#programming #python #beginner

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Before you write a program

The ideas the Program a siege lab assumes: what an instruction is, why input() never gives you a number, what a loop actually repeats, and the difference between printing an answer and returning one. Ten minutes.

9 blocks

#computer-science #binary #logic-gates

TechEnglish

Before you build a CPU

The handful of ideas that make the Build a CPU lab make sense: what a truth table is, how counting works with nothing but on and off, and why adding two bits needs two digits. Ten minutes.

8 blocks

#firewalls #internet-security #cybersecurity

TechEnglish

Firewall Essentials

This room focuses on 4 different kinds of firewalls in terms of internet security.

4 blocks

#ai #llm #machine-learning

TechEnglish

AI Fundamentals: How Large Language Models Actually Work

Tokens, parameters, attention, hallucination — the mechanics behind ChatGPT and every model like it, explained once so the vocabulary stops being intimidating.

10 blocks

TechEnglish

Email Security: SPF, DKIM and DMARC

Why a protocol with no authentication at all needed three bolted on afterwards — what each of the three actually checks, and which address a human reader is looking at.

7 blocks

TechEnglish

IoT Security: Small Devices, Long Lifetimes

Why security advice that works for servers fails on a sensor — constrained hardware, default credentials, devices that outlive their vendor, and why containment beats hardening.

4.0(1)

7 blocks

TechEnglish

Cloud Security: Who Is Responsible for What

The shared responsibility model across IaaS, PaaS and SaaS — which layers move to the provider, which never do, and why most cloud incidents are configuration rather than compromise.

7 blocks

TechEnglish

Network Access Control: 802.1X, EAP and RADIUS

Keeping unknown devices off the network before they reach it — the three parties in an 802.1X exchange, what the switch does and does not decide, and where EAP ends and RADIUS begins.

7 blocks

#ipsec #esp #internet-security

TechEnglish

IPsec Internals: AH, ESP and the Two Databases

The machinery under an IPsec VPN — which of the two protocols encrypts and which only authenticates, what the SPI identifies, and the difference between the policy database that decides and the association database that holds the keys.

12 blocks

#cryptography #internet-security #cyber-security

TechEnglish

Asymmetric Encryption & Digital Signatures

Why public-key cryptography needs two keys, which one does what, and how running the pair backwards turns encryption into a signature.

8 blocks

#tls #internet-security #cybersecurity

TechEnglish

TLS: What Happens Before the Padlock

The handshake behind every HTTPS connection — what each side sends, how a shared key appears without ever crossing the wire, and what the padlock does and does not promise.

9 blocks

#paymentsecurity #pcidss #tokenization

TechEnglish

Payment Security

How a card number is protected in storage, at the terminal, and at checkout -- PCI DSS, tokenization, EMV chips, and 3-D Secure, tied back to the encryption and certificates covered earlier in this path.

5.0(1)

10 blocks

#malware #socialengineering #ransomware

TechEnglish

Malware & Threat Landscape

The threats that work even when every cryptographic protocol is implemented correctly: malware types, social engineering, supply-chain attacks, and the defenses -- IDS/IPS, honeypots, backups -- built to catch each one.

10 blocks

#cryptography #symmetric-encryption #cipher

TechEnglish

Symmetric Encryption & Classical Ciphers

From Caesar's shift cipher to AES: what a cipher and a key actually are, why classical ciphers fall to frequency analysis, and why modern block ciphers replaced DES.

10 blocks

#kerberos #authentication #internet-security

TechEnglish

Kerberos Authentication 1

A practical space for understanding how Kerberos verifies identities using tickets and time‑based security. Learn the core flow between clients, the KDC, and services, and build a solid grasp of how session keys and TGTs enable secure, efficient authentication in modern networks.

8 blocks

#pki #cryptography #trustmodels

TechEnglish

Public Key Infrastructure (PKI)

Learn how trust is built on the internet. Explore how public–private key pairs, digital certificates, and Certificate Authorities work together to authenticate identities, secure communication, and prevent tampering.

4.0(1)

8 blocks

TechEnglish

Microsoft Azure Fundamental

Learn fundamental of Microsoft's cloud service provider Azure

10 blocks

TechEnglish

SQL JOINs Without the Confusion

INNER, LEFT, RIGHT, FULL and CROSS — what each one actually returns, why unmatched rows come back as NULL, and how to stop guessing which one you need.

#sql

7 blocks

TechEnglish

Git Essentials: The Everyday Commands

The dozen Git commands you actually use daily — staging, branching, and the difference between undoing work safely and rewriting history you have already shared.

8 blocks

TechEnglish

VPN Architecture & Protocols

Test your knowledge on how virtual private networks secure packet flow, contrast cryptographic handshakes across OpenVPN and WireGuard, handle NAT traversal, and mitigate routing leaks.

#vpn #ipsec

5.0(1)

14 blocks

TechEnglish

NPU Fundamentals 2

Continuation of room Introduction to NPUs

10 blocks