Computer Router Basics: Network Firewalls for the Beginner

The computing term ‘firewall’ originated from using a continuous wall between buildings built close together to prevent a fire from spreading from one to another. It was then used in the construction of vehicles to protect the cabin from the engine compartment. A network firewall is a barrier that protects a network you trust from …

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Computer Basics: What is a PDF File & How Can I Use it?

Before PDF files, sharing files between different operating systems and software packages was difficult, if not impossible. File types built and owned by corporations were competing with open standard file types. Nothing worked well together, even though the need to share information across platforms effectively was apparent. That spurred Adobe to create the PDF file …

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