Latest Posts

Now with that list from the ports – you should be wondering – what is FTP? what is TFTP? What is POP3? Here’s the run down – For WINDOWS For Unix/Linux and Network: So, now that you see this, you can focus on those ports, but it’s a good idea to know them all. For…

Time to move up the TCP/IP Model to Layer 4 – Application. The Internet is made of applications – web servers, email servers, storage servers, etc, and each of those applications connects to other systems with a TCP PORT. The TCP port numbers are pretty standard for normal traffic: So you see, when you connect…

Routing, essentially, is how computers communicate to other networks. From the subnet, we know our network ID – to reach other network IDs, we need to route to them. The default gateway on your computer is the first step – that tells your computer “if I need a computer not on my network, send to…

The whole point of networking is for computers to communicate to another computer. This allows for file sharing, streaming of content, storage outside the local computer, and bring up web pages. All this operates several levels in what we call the TCP/IP model – a set of standards for how computers talk to each other….

Now we move on to memory. The CPU is a processing engine, and while it has a small amount of memory (cache) for repeating tasks faster, that is very small in regards to how much memory is in computers. Memory is simple chips, that as long as they have power will keep the data stored…

OK, so you know computing, you know little wifi, and can hook computers together. What now? Decide the area you want to focus on in a company Area 1: Generalist This is probably the longest and hardest, but if you find you like to do EVERYTHING, you can still rise through the ranks by starting…

So as CPUs and applications have gotten more and more advanced, there is an aspect of being able to run very similar instructions at the same time. What CPU manufacturers have done is on one core, allow an instruction and then a very similar instruction to run almost immediately after it so it looks like…

In my tenure with a Discord help server (GeekCentral), I have encountered an individual that is currently going to a tech course around Microsoft Server. He’s asked for help, and I’ve taken him under my wing, but he’s asked a good question – How do I get a job doing this while I’m in school?…

The first item – CPU, or Central Processing Unit. Engineers much smarter than I have designed wafer of silicon that can help speed up computing to amazing speeds. Speaking of speeds – you’ll need to know that processors are rating with Ghz – gigahertz – one hertz in CPU term is one instruction per second….

The start of ITCareerGeek – thanks to a friend. Well, I finally can start with this site – a good friend of mine, faced with a prospect of not having a job after the first of 2023, has asked me to help with getting into IT. It all starts where you are – desktops, laptops,…