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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:
This Certification Prep Guide provides an overview of the Microsoft Azure Fundamentals certification and offers helpful tips that you can use when preparing for your certification exam.
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.
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.
Based on survey responses from the Global Knowledge 2020 IT Skills and Salary Report, this year’s highest-paying certifications reveal a strong emphasis on particular topics, such as cloud computing and cybersecurity. In fact, cloud and IT security make up the four top-paying credentials on this list.
During this Blockchain overview webinar we will discuss what blockchain is, how it can provide value, and how it is currently being used by organizations around the world to effect transformative organizational change. View the slide deck> **Free On-Demand Course** Blockchain Overview: Business Foundations
Global Knowledge subject matter experts predict the top trends for 2020 in IT training, Microsoft, Cisco, AWS, cybersecurity and more.
Looking ahead at new and emerging certifications provides insight into the areas deemed valuable in the IT industry. If you are an early adopter or in a position where you need to show that you have the bleeding-edge expertise of a technology, this list of recent and upcoming certifications is for you.