KC Tech

 Nowadays, everyone and their pets use a wireless device so how does it all work? Let's take a brief look. First off, let's only think about 2 devices in a room together that want to communicate with each other, they need to agree on 2 things: 1. Communication set, 2. Radio Frequency or channel to use. Now if you have a third, a fourth, and a fifth, you need to ensure all the devices meet the requirements within your service set called the Basic Service Set (BSS) . In order to do so, you add a device to your network and this is called the Access Point (AP) .  Once you have an Access Point serving BSS over an area, this area will now be called the Basic Service Area (BSA). You now can have communication between different devices in this area through the AP. Note that they won't be able to talk to each other directly, they need to talk through the AP. All the devices in an 802.11 wireless area network operate only in half-duplex mode. To distinguish your AP from other APs, yo

At work recently, there has been a lot of new deployments and I have had the opportunity to look at a lot of network diagrams. I've understood the OSI model Layer 2 with ease, and most of  Layer 3 information made sense to me with the exception of VLANs. Here's a summary of what I understood about VLANs and what I learned in my pursuit to understand the networking diagrams. UPDATE : VLANs come under Layer 2 -> Why? Glad you asked. At Layer 2, we have no way of securing traffic, if anybody snoops the traffic, they get the frames with all our data encapsulated, so the best way to secure our traffic is to prevent the 'snoopers' from seeing our traffic in the first place. One way to do this is to restrict the 'broadcast domains' but this does not scale well so an alternative option (not a replacement, just an alternative) is to use VLANs.  VLANs segment traffic into separate broadcast domains. There are two types of ports that are using on a Switch for working wi