Our Latest Articles
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Common Security Threats in Computer Networks
In this article, we will explain the most common security threats in computer networks. This allows you to be aware of those threats.
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AXFR Request
AXFR Request is a type of Domain Name System (DNS) request in which a secondary DNS server requests the update of information from a master DNS server.
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Power Over Ethernet (PoE)
Power over Ethernet (PoE) is an optional standard that provides direct current electrical power over Ethernet twisted-pair cabling. This makes it possible for an Ethernet switch port to provide both Ethernet data and the power needed to operate.
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PoE Vendor Extensions to the Standard
After 802.3at made it possible to provide roughly 30 watts over two pairs of wires, it was a relatively straightforward process to extend the standard to provide power over four pairs simultaneously.
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PoE Port Management
To manage these power loads, vendors of switches typically program the switches to provision power one port at a time, this is PoE Port Management.
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PoE and Cable Pairs
The PoE standard specifies the way that power is injected into the Ethernet cable pairs, and which pairs should be used.
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Asymmetric Encryption
Asymmetric encryption requires the use of two keys: a private key that is known only by its owner and a public key that is readily available to those who need to use it.
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How Power Over Ethernet works – PoE Operations
Understanding how PoE works. The idle state and three operational states: detection, classification, and operation.
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Symmetric Encryption
Symmetric encryption, or single-key encryption, is the most well-understood cryptography primitive.
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PoE Device Roles and Type Parameters
For those who want to delve into the details of the Power over Ethernet technology, here we discuss PoE devices roles and type parameters.
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History of Fiber Optics
It’s important to study the history of fiber optics to understand that the technology as it exists today is new and still evolving.
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Digital-to-analog conversion
Digital-to-analog conversion is the process of changing one of the characteristics of an analog signal based on the information in digital data. Learn more…