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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.

While Apple has created many fine things, they were yet to be created themselves when Xerox PARC scientists created Media Access Control addresses. These MAC addresses are 48 bits or 6 bytes long, so they are also known as MAC-48 or EUI-48. EUI stands for Extended Unique Identifier. It is written in hexadecimal characters as shown below:

Critical thinking allows us to take control of our thinking rather than letting it become hijacked by convenience, mindset, assumptions and bias. This white paper will walk you through understanding the implications of inputs (data) and influences (bias) to the reasoning process. You will learn how to develop a questioning outlook and quality standards that will lead you to make more effective decisions.

What quality did the most influential leaders throughout history, such as Winston Churchill, Ronald Reagan, and Margaret Thatcher, all have in common? They were some of the greatest orators the world has ever known. Their communication skills were the tools with which they built up nations with strong foundations. They taught us that the most fundamental factor of success is without a doubt communication, and that strong communication is the pathway to strong leadership. Here you will find a breakdown of what makes an effective communicator and how you too can develop your leadership skills through communication.

As IT departments struggle with skills gaps and businesses attempt to recovery economically from the COVID-19 pandemic, these 10 IT skills are essential to drive success. Job roles in these areas pay well, but decision-makers are struggling to find qualified candidates. If you’re looking to make an IT skills investment or start a new career path this year, these are the areas to consider.

These technology job roles are proven to be essential during a crisis as enterprises scramble to change strategies and meet goals. The skills demonstrated by IT professionals in these 10 positions can make the difference between business success and failure, especially during a recession.

While cybersecurity remains the most popular certification category in our IT Skills and Salary Report, foundational-level certifications highlight our list of the most popular IT certifications of 2020. 

According to the Global Knowledge IT Skills and Salary Report, women make up 16% of the tech workforce, and an even smaller percentage (8%) are at the senior or executive level. Here’s an overview of the most popular and most pursued certifications by women in tech.

Global Knowledge subject matter experts predict the top trends for 2020 in IT training, Microsoft, Cisco, AWS, cybersecurity and more.

A quick 30 minute introduction to Business Analysis for those who are considering the field. This webinar looks at why the BA is essential to the business, what BAs do, and certification paths for Business Analysts. View the slide deck>