What is a Proxy Server?
A Proxy Server is a piece of software that works at the Application layer of the OSI model to increase the security of a network. A proxy server acts as an intermediary between the internal network and external networks. More ...
What is the Internet of Things?
The Internet of Things (IoT) refers to the world of interconnected devices which provide data, and are being controlled across the Internet. Examples include many home automation devices, like smart thermostats and remotely controllable lighting fixtures, and countless others. More ...
The Function of the Three Planes of Junos Network OS
The architecture of the Junos operating system cleanly divides the functions of control, services, and forwarding into different planes. Each plane provides a critical set of functionality in the operation of the network. More ...
Create a Peer-to-peer Network
Many small to medium sized organizations are wrestling with Windows server and paying excessive licensing fees when they don't need to. Sure, a server provides centralized security administration, but is it really more efficient? More ...
Degree verses Computer Certifications
MCSE, CCNA or CCNP, Linux, Netware and Unix, these are all good certifications to have, but in today's job market, certifications are the basic minimum required by employers. Most positions require a degree. More ...
Virtualization For Dummies Cheat Sheet
Virtualization is the process of using a program to abstract a computer's resources in order to create multiple isolated virtual servers, each virtual server which can run its own operating systems independently. Virtualization saves money, energy, and space. Get to know some important terms about virtualization, types of virtualization, and leading companies and products in virtualization. More ...
Network+ Certification Exam Tutorial - DHCP And RARP
Part of passing the Network+ exam is mastering the many different protocols and services you're introduced to in your studies, and that's especially hard when two protocols do much the same thing! That's the case with RARP and DHCP, so let's take a close look at these two protocols and why we use them in the first place. More ...
What is Port Forwarding?
Port forwarding redirects a communication request from one address and port number connection to another while the packets are traversing a network gateway. This technique is used to hide hosts residing on an internal network from hosts on external networks. More ...
What is Cloud Computing?
You can't be sure where a specific Internet device is, it's just out there in the cloud of devices that is the Internet. An individual connected to the Internet can use an application that's in the cloud. An organization can place their data in the cloud. More ...
The Network Technician Career Field
As a Network Technician you'll have an interesting job where you'll be respected and highly rewarded. Network Technicians are responsible for an organization's computer and network infrastructure. The national median salary for Network Technicians is $57,500 to $67,800, while the top 10 percent earn about $112,000. More ...
Packet Switching Store-and-Forward Transmission
To send a message from a source end system to a destination end system, the source breaks long messages into smaller chunks of data known as packets. Most packet switches use store-and-forward transmission at the inputs to the links. Store-and-forward transmission means that the packet switch must receive the entire packet before it can begin to transmit the first bit of the packet onto the outbound link. More ...
Cellular WAN (Wide Area Network) or Mobile Broadband
Mobile Broadband allows you to get Internet access from anywhere within the range of cell tower. The data speeds of cellular modems has advanced rapidly over the years. Today's 4G (fourth generation) cellular mobile communications can provide data rates up to 100 Mbps. More ...
Servers - Racks, Blades and Towers
Unlike tower servers, offices that use rack servers which traditionally come in 1U, 2U, 3U, 4U or 6U are installed in racks. The numbers that give names to the rack mounted servers precisely indicate the number of Us they occupy in the racks. More ...
