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

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 …

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How computer accepts input from keyboard?

When we press a key, a tiny chip in the keyboard called keyboard controller notes that a key has been pressed. Keyboard controller places a coed in the buffer of the keyboard to indicate which key was pressed. Keyboard buffer is a temporary memory of the keyboard controller. The keyboard controller sends a signal to the system software notifying that something happened at the keyboard.

How does a CRT monitor produces image on the screen?

Process of Producing Image on the Screen by a Color CRT Monitor: A CRT monitor has an electron guns at its back. The gun fires an electron beams at once through a magnetic coil that aims the beams to the screen. The screen is coated with a chemical called phosphors that glow when struck by …

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How does a color CRT monitor produces image on the screen?

Process of Producing Image on the Screen by a Color CRT Monitor: A color CRT monitor has 3 electron guns at its back. These 3 guns fire 3 electron beams at once through a magnetic coil that aims the beams to the screen. The screen is coated with a chemical called phosphors that glow when …

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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. …

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

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