Systems & Networks BUT Computer Science Revision Sheets
Transversal skill of BUT Info: understanding operating systems, basic administration, and networks. Essential even for developers: 80% of production bugs in companies come from misunderstanding the system/network environment.
Systems & Networks curriculum in BUT Computer Science
The curriculum covers operating systems (Linux and Windows: commands, processes, permissions, Bash/PowerShell scripts), networks (OSI/TCP-IP model, IP, routing, DNS, HTTP/HTTPS), system security (authentication, encryption, basic firewall), cloud computing (AWS, Azure, GCP introduction), virtualization and containerization (Docker, Kubernetes basics), and continuous integration/deployment (CI/CD with GitLab, GitHub Actions).
How to study systems & networks in BUT Computer Science?
3 simple steps for effective systems & networks revision.
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Tips to succeed in systems & networks BUT Computer Science
Master Linux command line from the start: 30 essential commands (cd, ls, cp, mv, grep, find, chmod, ps, top, ssh, scp, etc.). NON-NEGOTIABLE in companies
Learn Docker: a container, an image, a Dockerfile, docker-compose. Has become essential even for front-end developers
Understand what happens when you type "google.com" in your browser: DNS, TCP, HTTP, TLS, HTML rendering. A classic interview question
Familiarize with a cloud provider (AWS Free Tier, Azure Students): create an account, deploy an instance, understand VPC concept, security
FAQ — Systems & Networks BUT Computer Science
What is Docker and why has it become essential?
Docker is a containerization technology that packages an application with all its dependencies (libraries, configurations, runtime) into a portable, lightweight container. Unlike virtual machines, Docker shares the host system kernel — much more efficient. Advantages: 1) Dev/staging/prod consistency ("works on my machine" disappears), 2) Fast deployment, 3) Horizontal scalability with Kubernetes. In 2026, ~80% of startups and ~60% of large companies use Docker in production. A standard.
Do I really need to learn Linux in BUT Info?
YES, non-negotiable. 96% of web servers run Linux. 100% of cloud servers (AWS, Azure, GCP) use Linux as main OS. Even if you develop on Windows or Mac, your apps will run on Linux in production. Mastering Linux command line is as essential for a developer as reading is for a lawyer. If your BUT doesn't insist enough, self-teach: 4-6 weeks with William Shotts' "Linux Command Line" (free online) is enough to acquire the basics.
Cloud computing: where to start in BUT Info?
Three practical steps: 1) Create an AWS Free Tier account (12 months free with limited services) or Azure for Students ($100 credit), 2) Follow "AWS Cloud Practitioner Essentials" tutorial (free, 6h) or "Azure Fundamentals" and pass the certification (AWS CCP or AZ-900) — strongly valued on CV, 3) Deploy a mini-project: a Node.js app on EC2 or Azure App Service, a managed RDS or Azure SQL database. In 4-6 weeks, you understand cloud basics. An investment with immediate ROI at hiring.
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