Before we start configuring firewalls or locking down switch ports, we should probably understand the “Philosophy of Security.” In the Network+ world, every decision we make is designed to support one of three core goals. 1. The CIA Triad No,…
The Ticket: “Help! The Computer Lab in Building B is completely offline, None of the 20 students can log in, and the teacher says “internet is broken’ since the storm last night.” Step 1: Identify the Problem (Gathering Info) You…
Sometimes, ping fails, and your computer says “Cable Unplugged,” but you’re looking right at the cord. This is where you pull out the heavy hitters. In a office environment with miles of hidden cabling, these advanced hardware tools save you…
We’ve all been there: a user is frustrated, things aren’t working, and you feel the pressure to start clicking buttons. STOP. CompTIA has a specific 7-step process that is designed to help you solve problems efficient;y without making them worse.…
In a large environment, you can’t be everywhere at once. You need a way for your switches, routers, and servers to “call home” and tell you if they are overheating, running out of memory, or if a port has gone…
When a coworker says “The internet is slow” or “I can’t print.” you don’t start by tearing open the walls. You start by opening a terminal. The Command Line Interface (CLI) allows you to “talk” directly to the network stack…
A network without security appliances is like a school without a front desk or locked doors. Anyone could walk in, and anyone could leave with whatever they wanted. As a Support Associate, you need to know how these devices inspect…
Wireless isn’t magic; it’s just data being converted into radio waves. To a network professional, Wi-Fi is essentially a Shared Hub in the air. Because everyone is sharing the same frequency, Understanding how to manage that “airspace” is the difference…
If a switch is a neighborhood manager, a Router is the highway system connecting different towns. While a switch looks at MAC addresses, a router looks at IP Addresses to decide where data goes next. Today, we’re exploring how routers…
A VLAN (Virtual Local Area Network) Allows us to take one physical switch and chop it up into multiple “virtual” switches. It is the ultimate tool for security, organization, and broadcast control. Today, we’re breaking down how we keep traffic…