Join Mike Meyers for an in-depth discussion in this video Three threats to your PC, part of CompTIA A+ Exam Prep (220-902) Part 1: Introduction to Computers.
- When it comes to danger to your computer,…I always watch out for what I call the big three.…RFI, EMI, and ESD, to help you understand…the difference between these three.…I'm going to be using this hard drive as a tool.…Now, let's start with the least dangerous of all.…And that's RFI, RFI stands for radio frequency interference.…And anybody who's ever listened to music on a radio,…can appreciate that sometimes you get crackles and pops,…that's interference as different levels of radio waves…are interflicting with each other and causing problems.…
Now, my hard drive itself,…when it's sitting inside a computer.…There's no way that RFI can hurt it, however,…if I were to take this hard drive and then plug it…into a computer and put it as part of a wireless network.…As I was trying to transfer data off this hard drive…and say to another computer,…RFI could potentially cause trouble…as I'm transferring the data.…Now keep in mind wireless networks and things like…that are designed to watch for RFI…and they can simply resend data.…
In this introductory course, Mike Meyers explains the basics of how a computer works and the operational procedures that are key to any well-running IT team, including soft skills such as professionalism, communication, and safety. In Chapter 2, Mike tours the four most recent versions of Windows, as well as the OS X and Ubuntu Linux operating systems. He shows how to navigate to essential tools in each OS and explains how to manage virtual memory (RAM).
Details about the CompTIA A+ certification and the exam blueprints can be found at https://certification.comptia.org/certifications/a.
- Interacting and communicating with clients
- Understanding the top three threats to a PC
- Touring Windows Vista, 7, 8, and 10
- Touring OS X and Linux