NCAE rooms, path 1 of 2

Foundations: files, network addresses, services and scoring

Four rooms in order. Changing files safely: run one command as the administrator with sudo, copy a file before you change it, edit it in the editor nano, and put it back from a backup. Addresses, ports and protocols: how one computer reaches a program on another, and what a failed connection tells you. Programs, processes and services: go from an open port to the program behind it and to that program's log. The checker, the board and scoring: what the scoring program (the checker) tests and how to read its results page (the board). Every listing comes from a real run on an Ubuntu Linux computer.

Joining is optional. It adds this path to the NCAE rooms home page, with your next room at the top. To begin, click Start with room 1.

A room is finished when every question in it is right and you have clicked Mark task complete on every reading task. Each room opens when you finish the rooms it lists.