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15 Top-Paying IT Certifications for 2021

Article | Aug. 17, 2021

Based on survey responses from the Global Knowledge 2021 IT Skills and Salary Survey, this year’s top-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.

2020 15 Top-Paying Certifications

Article | Aug. 16, 2021

Look back at the some of the highest paying IT certifications of 2020.

Multi-Step Authentication and Why You Should Use It

White Paper | May 19, 2021

Authentication is one of the essential components of security. It is one part of the concept known as AAA services. AAA services stands for authentication, authorization, and accounting.

Optimizing DNS for Better Performance, Filtering, and Security

Article | May 03, 2021

Most Internet users don't realize that often a website or other service that seems slow to respond is actually working fine. Instead, it’s the resolution of DNS that is putting a glitch in your giddy up. Fortunately, there are several steps you can take to optimize your DNS to get better performance.

Everything You Need to Know About the 2021 CISSP Exam Changes

Article | March 05, 2021

The 2021 revised and updated version CISSP (Certified Information System Security Practitioner) certification exam will be released on May 1, 2021. This new version of the popular CISSP exam will include a modest revision and re-organization of previously included topics, but will integrate a significant number of new topics.

What is a LAN and Four Other Types of Area Networks

Article | March 05, 2021

Learn about the five types of area networks.

Layer 2 Device Overview

Video | Feb. 24, 2021

An quick fundamental overview of layer two devices.   To learn more about this and similar topics, enroll in our exclusive Understanding Networking Fundamentals course.    

What’s the Difference Between Hubs, Switches & Bridges?

Article | Dec. 17, 2020

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.

Does a MAC Address Mean Apple Invented It?

Article | Dec. 15, 2020

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:

The 10 Most Important IT Skills for 2020

Article | Aug. 17, 2020

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.