Computer Networks

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computer networks

Computer Networking Fundamentals

The sharing of fax machines, printers, and modems amongst many computers and users reduce the operational cost. A database on a computer network is a very important application as it stores and runs many important data and jobs. Emails and chats can be used for instantaneous communication and sending of files on a computer network.

The computer networks are classified, depending upon the size, as Local Area Networks (LAN), Wide Area Networks (WAN), Metropolitan Area Networks (MAN) and Personal Area Networks (PAN). The topology (topology is the way the computer networks and network resources are connected) of the networking can be classified as Bus Network, Ring Network and Star Network.

The networking hardware basically consists of wiring, network cards and a hub. Computer network cards are required so that one computer can understand what the other computer is “talking”. Network cards have a unique MAC address to identify computers on a computer network. Hubs connect all the computers in the network. Hubs can also be used to connect to other hubs to increase the size of the computer network. Two computers can be connected using Ethernet cards or phone lines or power lines for communication, with hardware kits available at roughly a cost of $100.

As the number of computers in an office or a home increases, so do the number of cables, so wireless networking is a viable solution. In wireless networking radio transreceivers or infrared signals are used to communicate between computers and devices. Examples of wireless networking include Wi-fi and Bluetooth technology, though there may be security issues involved in wireless networking. However there definitely is a stronger preference towards wireless networking nowadays among consumers.

Computer networks have added a new dimension to the 21st century. Today the cyber world is much faster and wider than the real world. This has all been made possible due to computer networks. Computer networks have revolutionized business, communication, travel, research, defense, society and almost all human endeavors. The evolution of computer networks has helped the technological revolution take a big leap forward.

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Computer Networks


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100% new high quality Original Standard Ethernet Cable, CAT 5E(Enhancement)This cable connects all the hardware destinations on a Local Area Network (LAN).Ideal for use with 10 Base-T, and 100 Base-T networks. This CAT-5e patch cable has two RJ-45 male to male connectors and features 50-micron gold plated connectors which ensure a clean and clear transmission.Color: black.Gold plated connectors Length: 1 feet Quantity: 1 pcs Compliance Standards: EIA/TIA-568B Category 5EType: Patch cableConnector(s): 1 x RJ-45 – maleConnector(s) (Other Side): 1 x RJ-45 – maleworks best for your desktop, laptop, router, modem, switch, hub, DSL, xBox, PS2, PS3, …

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Although Bluetooth is commonly thought of in reference to the connection between your cell phone and headset, there are many other uses for this wireless technology, including creating a wireless network between hardware devices such as your computer and printer. With USB 2.0 bluetooth adapter with chip 1.2 Asc3600, you can transfer files, synchronize your PDA and smart phone contacts and calendar with microsoft outlook, use your phone as a wireless modem to connect to the internet or networks, connect multiple devices (mice, keyboard, keypad) wirelessly to your PC, print from your phone or PC to a Bluetooth printer, fax from your PC through your smart phone, and much more.

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Although Bluetooth is commonly thought of in reference to the connection between your cell phone and headset, there are many other uses for this wireless technology, including creating a wireless network between hardware devices such as your computer and printer. With USB 2.0 bluetooth adapter with chip 1.2 Asc3600, you can transfer files, synchronize your PDA and smart phone contacts and calendar with microsoft outlook, use your phone as a wireless modem to connect to the internet or networks, connect multiple devices (mice, keyboard, keypad) wirelessly to your PC, print from your phone or PC to a Bluetooth printer, fax from your PC through your smart phone, and much more.

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RJ45 CAT5e Snagless Patch Cable offers high-bandwidth capacity to accommodate streaming video and other memory-intensive applications. Cable provides standard CAT5e network connection. Perfect in conjunction with 10 and 100 Base-T networks. Premium snagless-type moldings protect the connection. Supports 100 Mbps applications. Features 100 MHz rating. Ideal for basic home networking.

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100% new high quality Original Standard Ethernet Cable, CAT 5E(Enhancement) This cable connects all the hardware destinations on a Local Area Network (LAN). Ideal for use with 10 Base-T, and 100 Base-T networks. This CAT-5e patch cable has two RJ-45 male to male connectors and features 50-micron gold plated connectors which ensure a clean and clear transmission. Color: Gray/Grey/Beige Gold plated connectors Length: 100 feet /30M Compliance Standards: EIA/TIA-568B Category 5E Type: Patch cable Connector(s): 1 x RJ-45 – male Connector(s) (Other Side): 1 x RJ-45 – male works best for your desktop, laptop, router, modem, switch, hub, DSL, xBox, PS2, PS3, … Ethernet RJ45 Splitter PlugIt is a small and lightweight 3 way Network RJ45 Splitter Plug In-Line Coupler. RJ45 Splitter Plug can expand one RJ 45 outlet into two 8 wire RJ-45 T adapter, parallel wiring RJ45 modular female to female couplers / Gender Changer Safety Locking-click for Cable 2 way: Using for join the cable and extend your network cord easily 3 way: Using special RJ45 Cable to split the RJ45 socket to two socket

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1001 Computer Words You Need to Know explains and illuminates the essential vocabulary of computers and the Internet. This comprehensive, but never condescending guide to the language of the electronic age carefully defines and explains every term with a sample sentence, and many entries have supplementary notes. In addition, the book includes a number of quick miniguides to managing your online life – dealing with Windows and Macs (and sometimes *nix), burning CDs and downloading files, word processing, spread-sheeting, connecting to the Internet (dialup, cable, DSL, wireless) surfing, IMing and emailing, taking digital photos, coping with networks, memory, and drives, and just plain coping with your computer.The backmatter contains an extensive list of helpful websites and an essay about online language and etiquette.

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This high quality Cat5e Ethernet Cable is designed for all of your networking needs. It works with 10BaseT, 100BaseT and even 1000 Base-T networks environment. Order today!

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With the development of the world, many kinds of devices are coming into being for our use. There are various kinds of converters and adapters in the world. Today we are going to bring you some introduction about the Bluetooth adapter for you to choose from.This Bluetooth adapter is fully compatible with USB equipped computers. It can support 2.0 standard. Compatibility of the wireless adapter includes Bluetooth enabled such as PC, mobile phone, digital camera, PDA, printer, fax and etc. File transmission can be done easily with the Bluetooth adapter. Moreover, data synchronism is another strong feature of the USB adapter. Information can be data synchronism by the Bluetooth adapter between a palmtop and a computer or between the mobile phone and the computer. Bluetooth is a proprietary open wireless technology standard for exchanging data over short distances (using short wavelength radio transmissions in the ISM band from 2400-2480 MHz) from fixed and mobile devices, creating personal area networks with high levels of security. It can connect several devices, overcoming problems of synchronization. You can get much convenience with the USB adapter. Your life will be very different with the Bluetooth adapter when you have one.So, come on and get more convenience with the USB wireless adapter now!

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Add bluetooth compatibility to your USB devices with this adapter. Link your bluetooth-enabled cellphone or PDA with your computer or wirelessly connect your MP3 player to your bluetooth-enabled computer. You will love it.Put an end to the clutter of cables with this best bluetooth adapter. Low-profile design stays connected to your laptop for quick and easy Bluetooth connections. Works with most devices enabled with Bluetooth technology. Stays connected to your laptop for quick and easy Bluetooth connections. With Bluetooth USB Adapter with chip 1.2 Asc3600 KH-A08, you can transfer files, synchronize your PDA and smart phone contacts and calendar with Microsoft Outlook, use your phone as a wireless modem to connect to the Internet or networks, connect multiple devices (mice, keyboard, keypad) wirelessly to your PC, print from your phone or PC to a Bluetooth printer, fax from your PC through your smart phone, and much more. The bluetooth adapter is so convenient; why not choose it now?

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For fast Ethernet computer networks that require bandwidth-intensive voice, data, or video distribution applications. Meets all Cat5e TIA/EIA standards, and drastically reduces both impedance and structural return loss (SRL). Each of the individual pairs is bonded together to help maintain the twist-spacing throughout the line right up to the termination point. Constructed from high quality copper cable, this design minimizes Near-End Crosstalk (NEXT) levels. Available in a variety of colors to easily color-code your network installation. Connector 1: (1) RJ-45 Male Connector 2: (1) RJ-45 Male

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For fast Ethernet computer networks that require bandwidth-intensive voice, data, or video distribution applications. Meets all Cat5e TIA/EIA standards, and drastically reduces both impedance and structural return loss (SRL). Each of the individual pairs is bonded together to help maintain the twist-spacing throughout the line right up to the termination point. Constructed from high quality copper cable, this design minimizes Near-End Crosstalk (NEXT) levels. Available in a variety of colors to easily color-code your network installation. Connector 1: (1) RJ-45 Male Connector 2: (1) RJ-45 Male

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For fast Ethernet computer networks that require bandwidth-intensive voice, data, or video distribution applications. Meets all Cat5e TIA/EIA standards, and drastically reduces both impedance and structural return loss (SRL). Each of the individual pairs is bonded together to help maintain the twist-spacing throughout the line right up to the termination point. Constructed from high quality copper cable, this design minimizes Near-End Crosstalk (NEXT) levels. Available in a variety of colors to easily color-code your network installation. Connector 1: (1) RJ-45 Male Connector 2: (1) RJ-45 Male

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For fast Ethernet computer networks that require bandwidth-intensive voice, data, or video distribution applications. Meets all Cat5e TIA/EIA standards, and drastically reduces both impedance and structural return loss (SRL). Each of the individual pairs is bonded together to help maintain the twist-spacing throughout the line right up to the termination point. Constructed from high quality copper cable, this design minimizes Near-End Crosstalk (NEXT) levels. Available in a variety of colors to easily color-code your network installation. Connector 1: (1) RJ-45 Male Connector 2: (1) RJ-45 Male
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