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We looked inside some of the posts by certexamscom and here's what we found interesting.
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OSI model Application Layer of the opensystems model explained in this video.
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The video is an explainer on Cert-Ex Lab Simulator for Comptia A+ exam. Check out the free download and online activation.
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Subnetting divides a large network (high bits) into smaller, manageable segments (lower bits) using a subnet mask. This creates more efficient IP address allocation, improves security by isolating broadcast domains, and allows for better control over network traffic.
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Cert-Ex practice tests with several question types linke multiple choice questions, drag and drop question, hot spot questions.
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