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Mark Edward Soper

In this sample chapter from CompTIA IT Fundamentals+ FC0-U61 Cert Guide, you will learn how to compare and contrast fundamental data types and their characteristics: char, strings, numbers (integers and floats), and Boolean.

In this sample chapter from CompTIA PenTest+ PT0-001 Cert Guide, you will learn how to take advantage of insecure services and protocol configurations during a penetration testing engagement.

Wendell Odom

This article provides an exam profile for the Cisco 200-301 CCNA exam. It describes question forms, trouble spots, hints for exam preparation, and recommendations for additional study resources. Find out here what you can expect to see on the exam, and how you can better prepare for it.

David L. Prowse

This article profiles the CompTIA A+ Core 1 (220-1001) and CompTIA A+ Core 2 (220-1002), which test competency in comprehensive vendor-neutral mobile devices, networking technology, hardware, virtualization and cloud computing, network troubleshooting, installing and configuring operating systems, expanded security, software troubleshooting, and operational procedures. The CompTIA A+ Core series focuses on expanded content on growing parts of the IT support role including an expansion of baseline security topics and a different approach to defining competency in operational procedures.

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