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The key difference between hubs, switches and bridges is that hubs operate at Layer 1 of the OSI model, while bridges and switches work with MAC addresses at Layer 2 of the OSI model.

Learn how to boost your visibility on LinkedIn by listing your skills and certifications and leveraging the courses you’ve taken for professional development. This is especially important to catch the eyes of recruiters and when applying for jobs.

An IT certification is a recognized benchmark mapped to a specific skill set based on standardized testing. A certification demonstrates your dedication, motivation and technical knowledge on a specific platform.