John R. Vacca Books

I-mode Crash Course
I-mode Crash Course

By John R. Vacca

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I Mode crash course
I Mode crash course

By John R. Vacca

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Wireless Data Demystified
Wireless Data Demystified

By John Vacca

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Computer and Information Security Handbook
Computer and Information Security Handbook

By John R. Vacca

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This book presents information on how to analyze risks to your networks and the steps needed to select and deploy the appropriate countermeasures to reduce your exposure to physical and network thr...

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Network and System Security
Network and System Security

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What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.

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