Why it is essential for a LAN administrator to understand VLANs? What criteria would be used to determine how many VLANs a department in a medium size company would typically need?   VLAN technology is fantastic as it offers added enhancements to networks and provides multiple pathways […]

Process/Application Layer

  The Application Layer gives applications access to the services of the other layers and defines the protocols that applications use to send and receive information. This layer is the first step in getting information onto the network. There are numerous Application Layer protocols and new ones come […]


TCP/IP is a protocol stack used for data transmission from source to the destination in the physical layer of all physical connections, like LAN cards and cables. Data is sent in the form of bits. TCP works with IP to enable applications to communicate like a physical circuit. […]


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