CCNA Prep: #1 - Networking Devices

Sun, 09 Nov 2025 00:00:00 +0000

Introduction to Networks

First lesson. Foundation stuff. Network devices, clients, servers. Basic but important.

What Is a Network?

Devices (nodes) that can talk to each other and share stuff. That’s it.

Common network devices:

Router
Switch
Firewall
Server
Client (End Host)

Clients and Servers

Client - asks for stuff. Your phone opening YouTube = client.

Server - gives you stuff. YouTube’s servers = server.

A device can be both. PC1 asks PC2 for a file → PC1 is client, PC2 is server. Roles flip depending on who’s asking.

CCNA Prep: #0 - The Plan

Sat, 08 Nov 2025 00:00:00 +0000

I’m preparing for CCNA as part of switching role from software engineering to security. The resources I use for learning are:

Jeremy’s IT Lab
Anki Flashcards

The plan is simple. I watch Jeremy’s videos and summarize it using AI and post it here. This will be helpful for me if I need a quick refresh (an obvious lie, my memory is just too bad) of the stuff I learned.

Network on Arjun's Blog

CCNA Prep: #1 - Networking Devices

Introduction to Networks

What Is a Network?

Clients and Servers

CCNA Prep: #0 - The Plan