Get started
Bring yourself up to speed with our introductory content.
Network Security Best Practices and Products
Bridge vs. switch comparison: What's the difference?
A network bridge connects two local area networks. A network switch, on the other hand, connects multiple clients to a network. Learn more about these two network components. Continue Reading
SD-WAN (software-defined WAN)
Software-defined WAN (SD-WAN) is a technology to distribute network traffic across wide area networks (WAN) that uses software-defined networking (SDN) concepts to automatically determine the most effective way to route traffic to and from branch ... Continue Reading
IPv6 (Internet Protocol Version 6)
IPv6 is a set of specifications from the Internet Engineering Task Force that improves IPv4 by extending IP addresses from 32 bits to 128 bits. Continue Reading
-
fiber optics (optical fiber)
Fiber optics, or optical fiber, refers to the medium and the technology associated with the transmission of information as light pulses along a glass or plastic strand or fiber. Continue Reading
Learn how to get started with your networking career
Wherever you are on your networking career path, these expert insights can help you decide where to go and give advice about job requirements, certifications and industry changes. Continue Reading
Discover the wireless certifications that matter
Find out which wireless certifications are worth pursuing with this expert advice that dives into vendor-specific, vendor-neutral and specialized certification options.Continue Reading
Network pros on new Cisco DevNet certification: 'Finally!'
Want to learn infrastructure as code? Now, there's a Cisco cert for that. Learn more about the new network automation certification suite, plus changes to the CCNA, CCNP and CCIE.Continue Reading
What is the difference between SDN and NFV?
SDN and NFV are siblings but not twins -- while they have a lot in common, they aren't identical. Here's what you need to know about their differences.Continue Reading
nslookup
nslookup is the name of a program that lets an Internet server administrator or any computer user enter a host name (for example, "whatis.com") and find out the corresponding IP address or domain name system (DNS) record.Continue Reading
What is Citizens Broadband Radio Service?
Citizens Broadband Radio Service gives enterprises another tool to manage the performance of their Wi-Fi and 5G networks. How does CBRS work?Continue Reading
-
VPN (virtual private network)
A virtual private network (VPN) is programming that creates a safe, encrypted connection over a less secure network, such as the public internet. A VPN uses tunneling protocols to encrypt data at the sending end and decrypt it at the receiving end.Continue Reading
What is data center networking, and how can you get started?
This feature explores the basics of data center networks, such as how to plan for data center consolidation, the effects of cloud services and how to handle data center interconnects.Continue Reading
software-defined networking (SDN)
Software-defined networking (SDN) is a network architecture that aims to make data center networks agile and flexible.Continue Reading
WAN (Wide Area Network)
A wide area network (WAN) is a geographically distributed telecommunications network that interconnects multiple local area networks (LANs).Continue Reading
The top 5 capabilities your edge infrastructure should have
The network edge plays a vital role in the future of networking and digital transformation. Make sure your infrastructure has these five components to help it on its way.Continue Reading