beginner · 22 min

Files, internet and cyber safety

Folders, browsers, networking basics and how to stay safer on a shared computer.

This tutorial is original writing by Sharda IT Services — not copied from any third-party tutorial site. Facts are standard textbook ideas; explanations and examples follow our classroom style.

Objectives

Create and rename a folder
Describe what a browser and a URL are
Name two cyber-safety habits

Skills: Files · Internet · Cyber safety

Files and folders

A file is one document, photo, spreadsheet or program. A folder (directory) is a named box that holds files and other folders. Give folders clear names such as Bills-2026, not New-folder (3). File extensions (.pdf, .xlsx, .jpg) hint at the program that opens them. Never rename a file extension unless you know what you are doing.

Internet and networking fundamentals

A network lets computers share data. A home Wi-Fi router is a small network. The internet is many networks joined together. A URL is the address you type in a browser (Chrome, Edge, Firefox). Wi-Fi is wireless access to that network. You do not need to configure servers to use a browser safely.

Cyber safety on a shared PC

Use a strong unique password. Do not share OTPs. Log out of email and banking on a CSC or café PC. Prefer https in the address bar. Treat unexpected “Your PC is blocked” pop-ups as scams. Sharda LMS never asks you to paste production database passwords into the coding lab.

What next

Reading a tutorial does not claim expertise. Completing a course does not claim expertise either.