Computer Networks

Be Sociable, Share!



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.

About the Author

For More Article Visit :: http://www.thearticleinsiders.com/

Computer Networks


 'a' Level Question and Answer Basics of Os Unix and Shell Programming and Data Communications and Computer Networks: According to Doeacc 'a' Level Syllabus


‘a’ Level Question and Answer Basics of Os Unix and Shell Programming and Data Communications and Computer Networks: According to Doeacc ‘a’ Level Syllabus


$10.3


New

 00951 Cat6 Snagless Unshielded (UTP) Network Patch Cable, Grey (6-Inches)


00951 Cat6 Snagless Unshielded (UTP) Network Patch Cable, Grey (6-Inches)


$12.53


For fast Ethernet and Gigabit computer networks that require bandwidth-intensive voice, data, or video distribution applications. Meets all Cat6 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. The molded, snagless boot prevents unwanted cable snags during installation and provides extra strain relief. 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

 00952 Cat6 Snagless Unshielded (UTP) Network Patch Cable, Blue (6-inches)


00952 Cat6 Snagless Unshielded (UTP) Network Patch Cable, Blue (6-inches)


$12.49


For fast Ethernet and Gigabit computer networks that require bandwidth-intensive voice, data, or video distribution applications. Meets all Cat6 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. The molded, snagless boot prevents unwanted cable snags during installation and provides extra strain relief. 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

 00953 Cat6 Snagless Unshielded (UTP) Network Patch Cable, Black (6-inches)


00953 Cat6 Snagless Unshielded (UTP) Network Patch Cable, Black (6-inches)


$12.49


For fast Ethernet and Gigabit computer networks that require bandwidth-intensive voice, data, or video distribution applications. Meets all Cat6 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. The molded, snagless boot prevents unwanted cable snags during installation and provides extra strain relief. 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

 00954 Cat6 Snagless Unshielded (UTP) Network Patch Cable, Green (6-inches)


00954 Cat6 Snagless Unshielded (UTP) Network Patch Cable, Green (6-inches)


$12.49


For fast Ethernet and Gigabit computer networks that require bandwidth-intensive voice, data, or video distribution applications. Meets all Cat6 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. The molded, snagless boot prevents unwanted cable snags during installation and provides extra strain relief. 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

 00955 Cat6 Snagless Unshielded (UTP) Network Patch Cable, Red (6-inches)


00955 Cat6 Snagless Unshielded (UTP) Network Patch Cable, Red (6-inches)


$12.49


For fast Ethernet and Gigabit computer networks that require bandwidth-intensive voice, data, or video distribution applications. Meets all Cat6 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. The molded, snagless boot prevents unwanted cable snags during installation and provides extra strain relief. 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

 00956 Cat6 Snagless Unshielded (UTP) Network Patch Cable, Yellow (6-inches)


00956 Cat6 Snagless Unshielded (UTP) Network Patch Cable, Yellow (6-inches)


$12.49


For fast Ethernet and Gigabit computer networks that require bandwidth-intensive voice, data, or video distribution applications. Meets all Cat6 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. The molded, snagless boot prevents unwanted cable snags during installation and provides extra strain relief. 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

 00957 Cat6 Snagless Unshielded (UTP) Network Patch Cable, Orange (6-inches)


00957 Cat6 Snagless Unshielded (UTP) Network Patch Cable, Orange (6-inches)


$12.49


For fast Ethernet and Gigabit computer networks that require bandwidth-intensive voice, data, or video distribution applications. Meets all Cat6 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. The molded, snagless boot prevents unwanted cable snags during installation and provides extra strain relief. 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

 00958 Cat6 Snagless Unshielded (UTP) Network Patch Cable, Purple (6-inches)


00958 Cat6 Snagless Unshielded (UTP) Network Patch Cable, Purple (6-inches)


$20.7


For fast Ethernet and Gigabit computer networks that require bandwidth-intensive voice, data, or video distribution applications. Meets all Cat6 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. The molded, snagless boot prevents unwanted cable snags during installation and provides extra strain relief. 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

 00959 Cat6 Snagless Unshielded (UTP) Network Patch Cable, White (6-inches)


00959 Cat6 Snagless Unshielded (UTP) Network Patch Cable, White (6-inches)


$12.49


For fast Ethernet and Gigabit computer networks that require bandwidth-intensive voice, data, or video distribution applications. Meets all Cat6 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. The molded, snagless boot prevents unwanted cable snags during installation and provides extra strain relief. 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

 00960 Cat6 Snagless Unshielded (UTP) Network Patch Cable, Pink (6-inches)


00960 Cat6 Snagless Unshielded (UTP) Network Patch Cable, Pink (6-inches)


$12.49


For fast Ethernet and Gigabit computer networks that require bandwidth-intensive voice, data, or video distribution applications. Meets all Cat6 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. The molded, snagless boot prevents unwanted cable snags during installation and provides extra strain relief. 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

 00961 Cat6 Non-Booted Unshielded (UTP) Network Patch Cable, Grey (6-Inches)


00961 Cat6 Non-Booted Unshielded (UTP) Network Patch Cable, Grey (6-Inches)


$12.49


For fast Ethernet and Gigabit computer networks that require bandwidth-intensive voice, data, or video distribution applications. Meets all Cat6 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

 00963 Cat6 Non-Booted Unshielded (UTP) Network Patch Cable, Black (6-Inches)


00963 Cat6 Non-Booted Unshielded (UTP) Network Patch Cable, Black (6-Inches)


$12.49


For fast Ethernet and Gigabit computer networks that require bandwidth-intensive voice, data, or video distribution applications. Meets all Cat6 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

 00964 Cat6 Non-Booted Unshielded (UTP) Network Patch Cable, Green (6-Inches)


00964 Cat6 Non-Booted Unshielded (UTP) Network Patch Cable, Green (6-Inches)


$12.49


For fast Ethernet and Gigabit computer networks that require bandwidth-intensive voice, data, or video distribution applications. Meets all Cat6 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

 00967 Cat6 Non-Booted Unshielded (UTP) Network Patch Cable, Orange (6-Inches)


00967 Cat6 Non-Booted Unshielded (UTP) Network Patch Cable, Orange (6-Inches)


$12.49


For fast Ethernet and Gigabit computer networks that require bandwidth-intensive voice, data, or video distribution applications. Meets all Cat6 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

 00969 Cat6 Non-Booted Unshielded (UTP) Network Patch Cable, White (6-Inches)


00969 Cat6 Non-Booted Unshielded (UTP) Network Patch Cable, White (6-Inches)


$12.49


For fast Ethernet and Gigabit computer networks that require bandwidth-intensive voice, data, or video distribution applications. Meets all Cat6 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

 00970 Cat6 Non-Booted Unshielded (UTP) Network Patch Cable, Pink (6-Inches)


00970 Cat6 Non-Booted Unshielded (UTP) Network Patch Cable, Pink (6-Inches)


$12.49


For fast Ethernet and Gigabit computer networks that require bandwidth-intensive voice, data, or video distribution applications. Meets all Cat6 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

 1 Zone, 1 Way 8 IP Zones


1 Zone, 1 Way 8 IP Zones


$381.28


Description:? Valcom Pagepro Sip Based Paging Server- Easy To Install- Live Or Recorded Messages- 65,000 Speakers, Expandable Up To 256 Ip Paging Zones- Easily Connect Loudspeaker System To Existing Computer Networks- Compatible With Cisco, Nortel, Avaya, Iwatsu And Most Ip Telephone Systems- Supports Ip And Analog Amplified Speakers- Supports Ip Talkback Speakers- Supports Legacy Paging Systems- Synchronized Clock Compatibility- Poe (802.3Af) Or Local Power- Sip And Multicast- Network Supervision- Feedback Eliminator- Night Ring- DhcpVcvip201

 1 Zone, 1 Way 8 Ip Zones


1 Zone, 1 Way 8 Ip Zones


$464.17


Valcom PagePro SIP based paging server- Easy to install- Live or recorded messages- 65,000 Speakers, expandable up to 256 IP paging zones- Easily connect loudspeaker system to existing computer networks- Compatible with Cisco, Nortel, Avaya, Iwatsu and most IP telephone systems- Supports IP and analog amplified speakers- Supports IP talkback speakers- Supports legacy paging systems- Synchronized clock compatibility- PoE (802.3af) or local power- SIP and Multicast- Network supervision- Feedback eliminator- Night ring- DHCPVCVIP201

 1' ft Cat5 0.3m 1ft Blue Cat5e Ethernet Patch RJ45 LAN Network Cable Snagless LAN Cord


1′ ft Cat5 0.3m 1ft Blue Cat5e Ethernet Patch RJ45 LAN Network Cable Snagless LAN Cord


$2.95


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: BlueLength: 1 feet Quantity: 1 pcs 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, …
Be Sociable, Share!