Learning Center

How Do Fiber Optics Work?

Fiber optics (optical fibers) are long, thin strands of very pure glass about the diameter of a human hair. They are arranged in bundles called optical cables and used to transmit light signals over long distances.

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How Do Gas Turbines Work?

When you go to an airport and see the commercial jets there, you can't help but notice the huge engines that power them. Most commercial jets are powered by turbofan engines, and turbofans are one example of a general class of engines called gas turbine engines.

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What is Ethernet, and How Does it Work?

Computer networking has become an integral part of business today. Individuals, professionals and academics have also learned to rely on computer networks for capabilities such as electronic mail and access to remote databases for research and communication purposes. Networking has thus become an increasingly pervasive, worldwide reality because it is fast, efficient, reliable and effective. Just how all this information is transmitted, stored, categorized and accessed remains a mystery to the average computer user.

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How Do Ethernet Switches Work?

Switches can be a valuable asset to networking. Overall, they can increase the capacity and speed of your network. However, switching should not be seen as a cure-all for network issues. Before incorporating network switching, you must first ask yourself two important questions: First, how can you tell if your network will benefit from switching? Second, how do you add switches to your network design to provide the most benefit?

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How Do Routers Work?

When you send e-mail to a friend on the other side of the country, how does the message know to end up on your friend's computer, rather than on one of the millions of other computers in the world? Much of the work to get a message from one computer to another is done by routers, because they're the crucial devices that let messages flow between networks, rather than within networks.

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What is Network Port Teaming?

Link aggregation, or IEEE 802.3ad, is a computer networking term which describes using multiple Ethernet network cables/ports in parallel to increase the link speed beyond the limits of any one single cable or port, and to increase the redundancy for higher availability. Other terms for this include Ethernet trunk, NIC teaming, port teaming, port trunking, EtherChannel, Multi-Link Trunking (MLT), DMLT, SMLT, DSMLT, R-SMLT, NIC bonding, and link aggregate group (LAG). Most implementations now conform to clause 43 of IEEE 802.3 standard, informally referred to as 802.3ad.

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How Does Modbus Work?

Modbus is an industrial protocol standard that has been in use for many years. Modbus ASCII and Modbus RTU are relatively simple serial protocols that use EIA-232 or EIA-485 to transmit data packets. The protocol defines function codes and the encoding scheme for transferring data as either single points (1-bit, coils) or as 16-bit data registers. This basic data packet is then encapsulated according to the protocol specifications for Modbus ASCII, RTU, or TCP.

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What is a Terminal Server or Device Server?

The ability to manage virtually any electronic device over a network or the Internet is changing our world. Companies want to remotely manage, monitor, diagnose and control their equipment because doing so adds an unprecedented level of intelligence and efficiency to their businesses.

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