tech sectiontech sectionPERT and CPM charts visually illustrate the tasks and dependencies of large projects using a flowchart-like diagram. Both techniques use similar approaches; PERT (Program Evaluation and Review Technique) was developed by the U.S. military while CPM (Critical Path Method) was developed in private industry. Several software products can be used to help create these charts, but whether involving computer or paper and pencil, the process remains the same.
FXS and FXO are the most common interfaces related to the standard analog telephone system. Analog telephone systems, also known as "Plain Old Telephone Service" or POTS, are the traditional telephone services provided by local telephone companies or PSTN (public switched telephone network). FXS and FXO are similar enough to cause confusion, but are actually opposites.
A local area network (LAN) is a private network covering a contiguous area, usually providing networking for a building or a company. The infrastructure of a network is the hardware that enables computers to communicate with each other.
Network auditors are responsible for protecting the security of data stored on computers and electronic networks. Network professionals often seek out a certification demonstrating their knowledge of technical skills regarding network security. The Global Information Assurance Certification fills this need.
A regular household telephone has two types of sockets: foreign exchange office (FXO) and foreign exchange station (FXS). Either of these sockets can connect to a voice over Internet protocol (VoIP) adapter.
With the popularity of mega social sites like Facebook and Twitter, many people are looking to get into the social networking market and develop their own social websites. With a number of online services such as Ning and KickApps, or help from prepackaged applications, you can get a site set up with features one would expect from these types of websites for minimal investment.
A voice over IP network (VolP network) requires several different components. User agents are the end points of the network. These can be IP telephones or adaptors that will let you connect regular telephones. You might also use software as a phone. Proxy servers or Software PBXs are computers that run specialized software to control switching voice calls. These can use the Session Initiation Protocol, or SIP, or they can use the H.323 switching standard.
Smart cards are a credit card-sized card implanted with a microchip that acts as a key to a computer system or network. It is widely used in large corporations and government agencies where added security is needed. However, smart cards don't fit every application and have drawbacks as well as benefits.
A network technician builds and maintains computer network systems for various organizations in a variety of situations. Duties can vary greatly according to the needs of each client, so strong deductive reasoning and a broad knowledge in computer networking play a key role.
Social networking has been the buzz word on the Internet since 2008. It is simply any type of website that allows for users to create content and share it with others. Some of these sites include Twitter, Facebook, and Blogger. If you'd like to create your own social network, it's not as difficult as you might think. While your network will probably not grow to be as big as Facebook, you can use it build better relationships within your company or family.
A storage area network (SAN) is a network composed of computers containing little more than drives to store and retain data, creating a collective data farm on which to store your digital media, files and personal documents. Accomplish this by linking together your desired storage computers with Ethernet cables and a router, creating a home shared network for your storage needs.
The best network designs consider the users of the network and what information they need in order to do their job. Information might come from data stored on computers or it might mean real time interaction with other people. In the past, real time interaction meant telephone conversations. Modern network designs must consider traditional telephone traffic as well as modern collaboration practices such as video conferencing and data sharing.
Dedicating a computer to storing data on a network will allow you to manage your documents, media files and backup needs in a central location. Because the goal of that computer is to provide data storage only, it does not need much power to operate. While using an old PC as a Network storage machine seems to make financial sense, you also need to consider the amount of power consumed by that computer. Older computers can use 3 to 5 times as much electricity as a new, low-power computer.
The T1 protocol is a high-speed form of data transmission carried over copper wire which allows multiple data feeds to coexist on a single link. Originally designed for voice calls, the T1 protocol is now widely used to transmit digital data streams at high speeds, creating a simultaneous transmission pattern of 24 independent connections at 1,544,000 bits of data per second (or 1.544 mbps), or 27 times faster than the standard telephone dial-up modem speed of 56 kilobits per second.
Networks vary in requirements depending on what you wish to accomplish. This ranges from simple file sharing between two computers to a multiple computer setup involving network interface cards, switches, hubs or routers, and cabling or wireless equipment.
Creating a network from scratch is dependent on several factors: number of computers, demand on resources, security and cost. From simple "router" networks to very large systems that service several commercial buildings, there are numerous ways to share data. A network can be fabricated for four machines that involves one router and several network cables. The router will translate network traffic to all machines, and will give each computer an IP address for communication. This router can be set up manually (software inside of the router usually accessible with a website), or by default most routers will "hand out" IP…
A bus network is defined as one in which systems interconnect using a common media pathway with equal rights to that pathway. This article looks at how to deploy an inexpensive bus network and identifies some advantages in doing so.
You will need a high-speed bandwidth modem that always has Internet access. Before constructing your WAN, verify that your modem works. Select either a DSL or cable modem. These modem services are inexpensive and easy to set up. Contact your phone company or an Internet service provider (ISP) to get DSL service. The phone company or ISP will send out a technician to your home or office to install and configure the DSL line. You will also receive a package that contains the following: modem, Ethernet cable, software, and instructions on how to install and configure the DSL modem. Contact…
A Network Drive is a shared drive, whereby various members of your local network (often termed a "Workgroup" or a LAN) can store, retrieve and share files, folders, backups, games, pictures and more. A Network Drive provides added convenience to your LAN users because, instead of having to send a spreadsheet or other item via email, via CD/DVD media, or via FTP (File Transfer Protocol), a user can simply place the file in a folder on the network drive and let the desired recipient know the location of the file on the network drive.
A network server is a computer specifically built to filter Internet traffic into and out of your local network, and to help shoulder the burden of resource sharing between multiple computer terminals. While many small home networks that consist of only two or three computers have no need for a dedicated server, the benefits of adding a server will become greater as more computers are added. Installing a server will heighten the security of your network and make your transferring of files much faster. You can easily build your own server by ordering the parts online or purchasing them from…
With 1.3 billion people, China's infrastructure needs are massive. As more of the Chinese population makes the transition from rural to urban life, cities and towns must accommodate more people. It is estimated that by 2011, China will spend about $725 billion dollars for infrastructure projects.
WiMax stands for Worldwide Interoperability for Microwave Access. WiMax is designed for broadband wireless access. It is a fixed broadband and features a base station connected to public networks including the Internet. Although WiMax has been available internationally for several years, it is relatively new to the United States.
In order to be a part of the ZigBee-style network your products have to be compliant with the ZigBee standards. They need to be built upon a ZigBee compliant platform then certified before they can bear the ZigBee logo.
