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This video introduces Computer Networks to the viewers. What is a Computer Network? A network of Computers is called as a Computer Network. The largest one out there is Internet. If there is a small network of Computers residing in a floor of an office, then it is called as a Local Area Network or LAN. 

Cloud Computing 08 Client Server Architecture This video explains about the evolution of IT Architecture. It explains about Client Server Architecture in detail as well as N Tier Architecture.

Cloud Computing 07 Server and Client This video explains about the terms Server and a Client. It talks about both the hardware and the software aspect of these terms. It also compares a Server Computer with a Client Computer.

Directory Service In this video let us take a look at Directory Service. What is it, anyway? Let’s just say there are two companies called A1 and A2. Each in their own building and let me call them A1’s building and A2’s building. By default, the employees from one company cannot enter into the other company’s building. If an employee from A1 asks for permission to enter A2’s building, using the employee badge from A1, then that employee will be denied access. In this case, each company maintains their own directory of employees and will not allow anyone else to enter into their building.

User Security This video explains about how the user security of computers, especially the Personal Computers as in PCs evolved over the time. Initially the PCs were single user PCs, then evolved into multi user PCs. When I say PCs, the Operating System is an integral part of it. After them becoming multi user, then they became a part of larger group in their local network called Domain. Now all of a sudden the user authentication itself evolved into a separate branch in IT Security thus giving was for Directory Services. Directory Services will be discussed in the next video of this series.

Evolution of Computers In this video let us take a look at how the Computers evolved? Actually how the Information Technology and its architecture evolved.

How does a Computer work? In this video we will take a look at how a Computer works. How does it start, what is the Boot Sequence and what is an operating system. This video will provide fundamentals about a computer so that you can proceed towards learning Cloud Computing. We all saw that a Computer contains a System unit and Input/Output devices. Please check the video ‘What is a Computer?’ in this series if you haven’t already. We also saw that there are three main components in the System Unit called CPU or Processor, RAM or Memory and Hard Disk Drive.

Cloud Computing for Beginners and IT Recruiters What is a Computer? A Computer is a device which can process a set of instructions given to it, called programs. It is as simple as that. But our goal in this lesson is to understand what makes up a computer? What is inside a computer? A Computer basically contains a System Unit. This unit is connected to a set of Input / Output Devices such as Monitors, Keyboards, Mouse etc.  Computers come in different shapes.For example, a Laptop is a computer. Your Smartphone such as iPhone or Android Phone is a computer. It’s screen acts as both an output and input device. We use the touch screen to input our command to the smartphone. Same applies for your Tablet devices such as Apple iPad or Microsoft Surface. 

Cloud Computing for Beginners and IT Recruiters What is Cloud Computing? Hi, Welcome to this Cloud Computing Tutorial Series. What is Cloud Computing? Well. I am not going to answer that, at least for now. And I am really not going to begin with listing benefits of Cloud Computing such as the ones shown in this slide, like most of the tutorials do. So, I am not even going to read these benefits listed in this slide.