Archive for the 'Networks' Category

by Mian Ali Ramday
What is a Network?
A network is a group of connected computers that allow users to share information and equipment.

Network Size
A network can be any size. For Example, connecting two home computers so they can share data creates a simple network. Companies can have networks consisting of a few dozen computers or hundreds of computers. The Internet is the world’s largest network and connects millions of computers all over the world.

Logging On
Network users are usually required to identify themselves before they can gain access to the information on a network. This is known as logging on. Each user must enter a personalized user name and password to access a network. By keeping this information secret, users can prevent unauthorized people from accessing the network.

Sharing Information
You can use a network to share information with other people. Information can be ant form of data, such as a document created in a word processing program, a picture drawn in an imaging application or information from a database. Before networks, people often used floppy disks or any other storage device to exchange information between computers, which was a slow and unreliable process. With networks, exchanging information between computers is quick and easy.

Sharing Resources
Computers connected to a network can share equipment and devices, called resources. The ability to share resources the cost of buying computer hardware. For example, instead of having to buy a printer for each person on a network, everyone can share one central printer.

Sharing Programs
Networks allow people to access programs stored on a central computer, such a s a spreadsheet or word processing program. Individuals can use their own computers to access and work with the programs. By sharing a program, a company can avoid having to install a copy of the program on each person’s computer.

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by Roberto Bell
There has been so much hype about wireless networking that it is sometimes hard to get to the important question: do you need it? To determine whether your notebook computer needs to have wireless networking capabilities, you need to understand what it is first.

WLAN

WLAN stands for Wireless Local Area Network or Wireless LAN. Wireless network cards use the IEEE 802.11 standard of wireless transmission. There are other wireless networking standards, such as Bluetooth, but the 802.11 standard is the preferred networking solution. The Wireless Network interface was developed originally for interfacing among computers connected through a local area network, but it is now also being used for Voice over Internet Protocol (VoIP) and internet access, just like the standard Local Area Network interface.

A Wireless Networking environment has no need for complicated wiring to accommodate data sharing and internet access. The wireless network uses one or more Wireless Access Points or Wireless Routers to transmit the signal. An Access Point has an antenna and an Ethernet port, which must be connected to a broadband modem for internet connectivity. A Wireless Router adds several more Ethernet ports to allow a combination of wired and wireless connections. The Access Point or Router acts as the radio frequency transmitter and receiver (radio frequency electromagnetic waves are the medium through which data packets are sent and received). This Access Point interfaces with devices (computers, PDAs, IP Phones, and other Access Points) which use 802.11 wireless adapters.

Wherever there is an 802.11 wireless access point, a wireless networking-capable device can access that network and, generally, the internet.

Do You Need Wireless Networking in Your Notebook Computer?

Whether you need wireless networking depends entirely on you. Wireless networking capability is always a wonderful feature to have in a notebook computer, but there are scenarios where wireless networking is definitely necessary.

If you want to have a tidy office or home network, wireless networking is for you. Moreover, if there are many users in your local network or if the number of users is expected to increase, a wireless router is not limited by the number of Ethernet ports on the router. Please note, however, that a wireless network connection is not as reliable as traditional Ethernet connections, and wireless connections are susceptible to radio wave and electromagnetic interference.

If you are a freelancer, a reporter, or in another position where you frequently travel, Wireless Networking is invaluable. Wireless Networking is the most widely used form of public internet access all over the world. With a wireless networking card, you are guaranteed an internet connection, as long as you can find a wireless hotspot.

For interfacing with personal devices like PDAs and cellular phones, Bluetooth is a more common option, but Wireless Networking is absolutely necessary for wireless internet connections.

This article may be republished freely as long as this copyright notice and box of resource links are included at the bottom.

Copyright © 2007 MALIBAL, lLc

MALIBAL is the Home of the World’s Fastest Laptop! Please, check out these recommendations for the best laptops & notebook computers.

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by Grant Foster
One of the best inventions ever made has to be the cable. Doesn´t it seem like everything we frequently use like our television, computer, Ipod, cell phone, and stuff like that runs off of cables? Well the truth is, they all do. There are literally hundreds of cables in the world that all do multiple things. Some cables are more highly used then others, while some are more powerful than others as well. One cable in particular that is often used is called the digital optical cable. This cable is very handy because it can be used for different devices.

A digital optical cable can be used in the connection of digital home theaters, game consoles like the Playstastion 3, cd players and other quality hi-fi electronic equipment. For those who maybe having trouble understanding what I am saying, take for example your dvd player, you can use a digital optical cable to connect that to say your surround sound system. This particular is cable is very handy when it comes to enhancing your electronical experience.

The coolest part of this cable is that when using fiber optic technology, you can send data without electricity through a conductor. This cable sends light signals instead of electricity, therefore you can quickly transmit data faster than with the your traditional electricity. So when you using digital optical cables, you know that you are using the newest type of cable out there.

There are countless types of cables out on the open market today. They all do different things to make life easier on us civilians. One of the more popular and heavily used cables is the digital optical cable. If you think you need digital optical cables than do some research and look online to see where you can get your best deals. These cables are wonderful and they make your life more exciting.

Written by Grant Foster. Find the latest information on Ditital Optical Cables

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by Grant Foster
There are a variety of places you can look to find the right type of cables for your particular situation. If you really think about it, there are countless cables in the world today, most of which most of us have never even heard of. The truth is, without these cables that we know nothing about, our lives wouldn´t be the same at all. It is funny because cables are what connect us to a certain thing like our television and computer. A particular type of cable that a number of us look for is the usb to serial cable. This is a important cable because many of us always use is.

If you are one of the poor souls that is in need of a a usb to serial cable the best place to look is online. There are several websites that sell this certain cable. Do a bit of shopping around before you make your selection because some places are more expensive than others and it is up to you to get the best deal. Another spot to look is your local electronical store. Most electronical stores specialize in these types of things so they are bound to have a usb to serial cable for you. You can also check out a computer store as well because a lot of these places sell cables for different scenarios.

Cables are very important to people because they make the world run at the pace that it does. Cables are used with computers, televisions, your house, and numerous other things to make life easier for you. A usb to serial cable is a popular cable a number of people are always looking for. So do your research before purchasing the best one for you because some places will have better deals than others.

Written by Grant Foster. Find the latest information on USB to Serial Port Cables

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by Grant Foster
One of the coolest cables out there today is called the SCSI cable because there is a funny nickname attached to it. If you ask any computer geek about an SCSI cable they will all call it the same thing. Many people refer to this cable as the “scuzzy” cable because of its initials. I know go ahead and laugh because its such a cute name. It sounds pretty humorous because normally when you use the world scuzzy it means dirty or something but not in this case. What SCSI stand for is small computer systems interface, and this cable is pretty important to your computers well being.

SCSI is really sweet because it is a parallel interface thus it sends entire “byte” of information at one time rather than sending things on “bit” at a time. An SCSI cable is made for speed, but be careful with the length of SCSI cable you use. Many problems can arise with the length of this particular cable. Most SCSI cables are pretty long, like thirty six feet so just know what you are getting yourself into when purchasing a SCSI cable.

There are two basic types of SCSI cables you should know about. The “single ended” and the “low voltage differential.” Everything before Ultra2 and Ultra160 SCSI is “single ended.” This basically means that devices have slower speeds, and can perhaps slow down a “low voltage differential” device when connected together. SCSI cables are super useful because they can have up to fifteen different connected devices with certain types of SCSI devices. It sounds a complicated because it is. There are several cables that do different things when it comes to a computer. Do some research before purchasing any cable especially a SCSI cable because there is a lot to know before you use it.

Written by Grant Foster. Find the latest information on SCSI Cables

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by Grant Foster
Everyone knows that there are countless cables in the world today and they all do different things. One cable that everyone can´t live without is the fiber cable. This is a super sweet cable because this type of cable is composed of one or more transparent optical fibers enclosed in a protective covering and strength members. I bet you didn´t know all that did you? Do you know what fiber cables do? Well if you said no, let me tell you what it is. Fiber cables are the awesome cables that transmit data by the mode of light. There are several different types of fiber cables so let me try and explain a few to you.

There is the duplex fiber cables, single mode simplex fiber cables, single mode duplex fiber cables, and the plastic optical fiber cables. Whatever you are looking for, whether it be a multi mode, simplex, duplex, or multi strand fiber cable, you can easily find it because so many manufacturers make fiber cables. Fiber cables come in a variety of types depending on there usage. Take for example the zip cord or the simplex fiber cable. These fiber cables are used for desktop connections. The distribution fiber cable is a small cable which is required for dry conduit run panel boxes. Another fiber cable is the aerial fiber cable which is usually used for outside installation. These are just to name a few of the fiber cables we use to improve our everyday lives.

You may not know it but cables are what run this world. Fiber cables are very important because they can be used in so many different ways. So the next time you think about cables, think about the fiber cable because it so cool and it does so much to help our lives.

Written by Grant Foster. Find the latest information on Fiber Cables

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by Grant Foster
For all those individuals who have a personal computer, or what is called a PC, you know that you have to have cables for your computer to work. It seems like everything in this world is run off cables right? A PC is no different. When it comes to PC cables, is can get pretty complicated because technology is constantly changing and new cables are always popping up out of nowhere. Even though PC cables are changing at a rapid pace, there are still those cables that every PC needs.

Every personal computer is different. Some are newer than others and some are just simply better than others as well. Whatever personal computer you have, one thing that they all share in common is that they all use coaxial cables, twisted cables, and the optic fiber cables. Coaxial cables come in two forms. Regular coaxial cables and thick coaxial cables. The twisted cables usually connect your PC to a phone line. They come in different forms as well. Twisted cables come either in an unshielded or shielded form. The shielded cable protects the cable better than the unshielded. The optic fiber cable is probably the most important cable out of these three and it is the most expensive as well. This cable has the ability to send information at a 100 Mbps or 1 Gbps speed. This cable is vital to your computer working well and properly.

There are several cables that make your PC function at full capacity. The three explained above are just to name a few of the number of cables that connect your PC and make it work great. If you wan to know about other PC cables, look online and get all the information you need about the particular PC cable you are looking for.

Written by Grant Foster. Find the latest information on PC Cables

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by Grant Foster
What is th one thing that most electronic devices have in common? Well if you are still scratching your head to this mystery, the answer is cables. Although the wireless craze is beginning to sweep through the world, cables and wires are still necessary and are commonly used. Just think, your computer, your Ipod, cell phone, ATM machines, and countless other electronic devices need to cables to work properly and efficiently. One of the most commonly used cable is the Cat5e cable.

The Cat5e cable or otherwise known as the category 5 cable is most commonly found and used in ATM machines and in Ethernet. It sounds like a high tech cable that would be hard to figure out and spot, but honestly, they are pretty simple. In fact, by twisting four pairs of wire into a single, insulating jacket, you can make your own cat5e cable. I know it sounds pretty easy to do and it may now seem like this cable is irrelevant but by using this cable you allow for a good balanced reception with less signal interference while acquiring a smoother connection. Therefore, this cable is very important in making things easier for people who use them.

If you are no the handy man type and don´t want to rig up your own cat5e cable, there a re many retailers who sell this type of cable. When you go to buy this cable, make sure you get one that is the right length for whatever device you maybe using it for. Also make sure that it meets the standards of the American National Standards Institute for efficiency and durability. There is nothing worse than buying a faulty cable which can have harmful effects on whatever you maybe using it on. Do some research about cat5e cables if you really do need one. The more you know, the smarter you become. Cat5e cables are good cables when you use it properly for the right device.

Written by Grant Foster. Find the latest information on Cat5e Cables

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by Shakir
What Is An Internet Protocol?

Internet protocols are data-oriented protocol for transferring and communicating data across network. This protocol is usually sent from one computer to another on the Internet. Internet protocols are widely used and transferring data is their main use through networks or LANs. Many Internet protocols are connected through ethernet connections which is the most widely use connectivity tool. Just like anything though Internet protocols does have its problems. It may not seem like a lot, but just like anything it doesn’t always go through the way we like it. For instance the delivery of email through your IP or Internet protocols really can’t always be guarantee and there is a reason for that. Internet protocols read Internet address such as an IP address, but they can’t guarantee it will reach the destination it was intended for.

Internet Protocols and You

As with anything else, Internet protocols, connections and service continue to get better. Remember how much we all thought dial-up connectivity was the greatest invention? To make that memory worse is the fact we thought 28K was fantastic and FAST!

Two of the most familiar and most used internet protocol is TCP/IP. Transmission Control Protocol (TCP) and Internet Protocol (IP). When looking at the OSI model layers, the TCP/IP protocols can be found in the lower layer of the Internet Protocol Suite as part of the routing protocol layer. Internet Protocol (IP) resides within the network-layer protocol (Layer 3) and contains all the addressing information (IP addresses) and source control information that is responsible for packets being routed. Along with the TCP protocol, the IP protocol is the heart of the Internet Protocols.

Internet Protocol Routing

IP routing is dynamic in that routing calls for routes are calculated automatically at regular intervals by the routing software as opposed to static routing which are established by the network administrator changes the router configuration.

An IP routing table, which has a combination of destination address/next hop pairs, which is needed for dynamic routing. IP routing is specifically designed for IP datagrams to travel through internetworks one hop at a time. As the entire route is not actually known at the onset of the packet journey and are recalculated at each of the hops to what the destination address by matching what is put into the datagram for the destination address.

The Transmission Control Protocol (TCP) is the protocol that is used to actually transport the data in the IP environment and corresponds. The TCP resides in Layer 4 of the OSI reference model. TCP provides stream data transfer, reliability, efficient flow control, full-duplex operation and multiplexing.

Other Internet Protocols

With the advancements in Voice Over Internet Protocol, or VOIP, originally introduced only a few short years ago, there has already been great advancements and as Internet protocol connections improve, this is something that business and individuals are taking a serious look at. Internet protocols keep changing and that will never stop the world’s quest to give everyone the best connection possible no matter where you live.

About the Author:Shakir Husein is the CEO of Dynamic Intel Dynamic specializes in secured ecommerce solutions and content management systems. More articles on ecommerce and CMS can be accessed at Pacific Articles.

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by Cynthia Blake
Over the past 12 months, spyware removal has become the number one priority for IT professionals around the world.

Just a few years ago, spyware was only a minor threat. However, dramatic increases in the number of spyware programs in existence has elevated spyware as the number one risk to computers and databases.

A recent poll by The Computer Technology Industry Association (CompTIA) shows that spyware is the top concern of 55% of the 1,070 businesses surveyed. Almost all of them reported that spyware has definitely increased dramatically in the last year alone.

According to ComputerWeekly.com, the Sans Institute reports that almost 33% of websites are infected with malware that downloads itself onto computers without user knowledge.

Another survey reported that almost 47% of businesses that relied on the internet for parts of their commerce had suffered spyware-related losses.

The greatest risks to spyware include downloads and browser use. The most vulnerable browser to spyware infection is actually Internet Explorer. Although Microsoft has improved their browser considerably with version 7, the fact remains that Internet Explorer’s close relationship to the windows operating system leaves users highly vulnerable to malware attacks. Prudent users are now switching to alternative browsers such as Mozilla’s Firefox, which are more stable and secure, and do not share an intimate connection with the users operating system.

User awareness of virus protection has become much better over the past few years, including the now widespread knowledge that it is generally bad to download unknown emails and their attachments. However, user awareness of spyware is not widespread yet. Many do not realize that spyware can install itself on a computer just by visiting a website.

Spyware removal should now be a key priority for anyone using the internet, since spyware has become sophisticated enough to steal user information such as credit card numbers and passwords.

The best spyware removal programs are those from reputable companies. Free spyware removal programs should be avoided due to the fact that many malware programs are disguised as “free” spyware removal programs.

Users should take action to protect themselves and their identities by downloading and using a reputable, well-reviewed anti spyware software program. Please visit http://www.thewisesurfer.com for reviews and recommended spyware removal programs.

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