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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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What is optical fiber? Briefly describe the structure of optical fiber. What are characteristics of optical fiber?

optical fiber definition characteristics structure

Optical Fiber

Optical fiber is a type of dielectric (insulating) material, such as glass or plastic, capable of transporting light. High-speed data can be transmitted through optical fibers by total internal reflection of light. The biggest feature of optical fiber is that it transmits light signals instead of electrical signals. Currently available optical fibers have a data transmission rate of 100 Mbps to 2 gbps.

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What is flowchart? What are characteristics of flowchart? What are the rules for creating flowchart?

flowchart definition characteristics rules


A flowchart is a representation of a decision sequence or algorithm. This is a series of pictures that show how to proceed in order to solve a problem. Purpose of a flowchart is to show the flow of the program. The function is to show the steps of decision sequence or algorithm in the form of diagram.

Flowcharts have to be drawn using several geometric figures of different shapes. It helps to understand the nature of the program. Programmers use these charts of flows to compose programs.

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