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What is a Virtual Private Network (VPN) and How Does it Work?

What is a Virtual Private Network (VPN) and How Does it Work - onlineclassnotes.com

Virtual Private Network (VPN) is a technology that allows users to create a secure and private network connection over the internet. VPNs are becoming increasingly popular among individuals and businesses alike, as they provide a range of benefits such as enhanced privacy and security, and the ability to access content that may be blocked or restricted in certain regions.

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How computer accepts input from keyboard?


Keyboard is one of the most used input devices. Keyboard is a device with keys for alphanumeric characters along with various other keys to assist using the computer by sending instruction to the computer. The process of sending an instruction to the computer from keyboard when a key in the keyboard has been pressed is described below.

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What are the 6 steps followed by CPU in computer to Execute an Instruction?

CPU (Central Processing Unit)

CPU or central processing unit in computer is an electronic circuitry that carries out the instruction given by a computer program. CPU in computer execute instruction by performing basic arithmetic, logical, control and I/O operations as required per instruction. CPU in computer is considered to be the brain of the computer. The speed and efficiency of a computer mostly depends on it’s CPU.

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What are the categories of risks in software engineering? Explain the process of risk management.


Risk Management:

Risk management is a series of steps that help a software team to understand and manage uncertainty. It’s a really good idea to identify it, assess its probability of occurrence, estimate its impact, and establish a contingency plan that─ ‘should the problem actually occur’. Risk management is a part of umbrella activities.   Simplistically, you can think of a risk as something that you’d prefer not to have happen. Risks may threaten the project, the software that is being developed or the organization.   

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