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IEEE 802.3 Interframe Spacing
The IEEE 802.3 specification states that before a station can attempt to transmit on the wire, it must first wait until it has heard 9.6 microseconds of silence. Many popular myths have arisen surrou…
The OSI Model: Layer 7 - Application Layer
The Application layer of the OSI model is where users communicate with the computer. The Application layer is responsible for identifying and establishing the availability of the intended communicati…
Free Webinar: Learn How Zero-Trust & Cloud Techno…
Work transformation is not 'one and done,'" says IDC's vice president, Holly Muscolino. Most enterprises understand that a hybrid workforce is the future, but they are finding the transformatio…
Manchester Signal Encoding
The device driver software receives a frame of IP, IPX, NetBIOS, or other higher-layer protocol data. From this data, the device driver constructs a frame, with appropriate Ethernet header informatio…
Acunetix Online: Run a Free Scan for Network and…
Acunetix has refreshed its online web and network vulnerability scanner, Acunetix Online, with a massive update. The new Acunetix Online now incorporates all the features found in its on premise offe…
Introduction to Cisco Unified Communication Manag…
We have been hearing about VoIP for many years now and while some have never worked with it, it has become today's standard in IP Communications and Private Branch Exchange (PBX) or telephony center…
The OSI Model: Layer 2 - Datalink Layer
The Datalink ensures that messages are delivered to the proper device and translates messages from the Network layer into bits for the Physical layer to transmit. It formats the message into data fra…
Serial Direct Cable Connection, DB9, DB25, COM Po…
This article covers the popular serial ports on workstations, servers and laptop computers. We cover serial data transfer, port pinouts, port speeds, serial interface types (DB9 & DB25), null mod…
Windows Server Group Policy Link Enforcement, Inh…
Our previous article explained what Group Policy Objects (GPO) are and showed how group policies can be configured to help control computers and users within an Active Directory domain. This article…
Free Webinar - Dealing with Remote VPN Challenges…
With a lot of enterprises switching to a work-from-home model, it is critical for admins to have a strategy in place to avoid poor performance and ensure secure access. This webinar will help you und…
The IEEE 802.3 Frame Format
The following is a description of the Ethernet Frame Format described in the IEEE 802.3 Specification. The 802.3 Specification defines a 14 byte Data Link Header followed by a Logical Link Control He…
Troubleshooting techniques for Fast Ethernet
This page will primarily discuss problems unique to Fast Ethernet.
The Collision Domain
Incompatible Ethernet Jabber
Auto-negotiation Priorities And Alternatives
Incompatible Cabling Specificat…
Cybersecurity Framework Update
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