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The ability to interpret and understand IP addresses and subnet masks is critical for an IT professional. This skill is the foundation for troubleshooting numerous problems, from the assignment of an IP address to a host to routing problems to access-control list problems. It is also necessary for designing and configuring efficient IP networks.

Learn how a switch moves data through the network, and what makes a switch efficient.

Read to learn more about common risky behaviors in security that typical workers engage in, and what you can do to avoid being the weakest link in your company.

Explore the ways in which network engineers design, implement, and troubleshoot Cisco Access Control Lists (ACLs), which is a topic that appears in the CCNA examination.

There are few (if any) networks in the world that do not implement NAT/PAT for IP version 4. IP version 6 will eliminate a lot of the need for NAT. Even though NAT is usually implemented as a firewalling function, it can be important on Cisco routers as well. From this, it is simple to conclude that understanding, designing, implementing, and troubleshooting NAT is a required skill for network engineers. The topic also appears in the CCNA examination in multiple questions and simulations.

Discover how the Red Hat Certified Architect program provides a credential that represents skills and knowledge needed for a world in which IT architecture is undergoing a period of rapid change and evolution.

Discover what the Internet of Things (IoT) is, where it can affect the most short-term change, its impact on existing networks, as well as some business, cultural, and ethical considerations.

The business and customers are looking to IT service providers to be more responsive, delivering more frequent service changes with higher quality.

Reduce the time it takes you to troubleshoot problems as a system administrator by learning tips and best practices for IBM WebSphere.

Learn some tips that will help you prepare and pass the VCP5-DCV exam.