Computer Networking Simplified

So what is computer networking? To the uninitiated this term may sound intimidating but you may have already come across it or have even used it either at work or at home. For those new to computer networking, simply put, a network refers to a system where two or more computers are connected to each other. This is done so people can share things like information or computer hardware, like a printer for instance.

Now there are several things you need to set up a computer network. The most basic system consists of a protocol, NICs or network interface cards, cable and a hub.

A protocol is a set of rules that the computers have to follow in order for them to "speak the same language". For example, http is a protocol. If you want to be able to access a website from your computer that works on http, the website you are accessing must also operate on the same protocol otherwise you will not be able to read the site.

NICs are cards that you put at the back or side of a computer. This allows the computers to communicate with each other. A cable is simply a wire that connects the computers together and the hub is a device that controls traffic, for example, information that one computer sends to another.

Now this is a list of items for a standard network. You're going to need a different set of devices if you are going to go for wireless networking.

How does a computer network work? Let's say for instance, you want to send information from your desktop to your father's computer. The NIC on your PC transfers the file through the cable into the hub. The hub then transfers the data to your father's computer. If each of the units uses the same protocol then the information is accepted by your dad's computer and he will be able to open the file you just sent.

There are two types of networks: the LAN or local area network and the WAN or wide area network.

The LAN is a very simple type of network where all the units you connect are located in one place. There are two types of LAN, peer to peer and client server. A peer to peer network is where two or more computers are connected to each other directly. For example, computer 1 is connected to computer 2, computer 2 is connected to computer 3 and so on. The computers are dependent on each other so if one unit experiences problems, the others simply will not be able to connect to each other. The client server type is where all computers are connected to a main unit. This is more convenient because if one computer has problems, the others will not be affected. You will still be able to exchange data.

An example of a WAN is the internet. As you can see, this is a very large type of network allowing millions …

What is Win32 Heur? How to Remove Win32 Heur Virus From Your Computer Quickly

Have you heard of Win32 Heur? It is a malicious virus that is invading computers all over the globe, and it can really wreak some havoc with your computer if you get infected and don’t get rid of it pretty quickly. Win32 Heur is a Trojan horse type of virus, which means it hides itself by looking like something beneficial, and then once it gets inside your computer’s walls of defense, it lets its true colors show and you are in for some trouble.

The two biggest problems associated with the Win32 Heur are losing your personal information because you have become vulnerable to spyware and hackers who are out to steal your identity. There is a reason why identity theft is so common – that is because of computer nerds’ abilities to infect computers with spyware via viruses and get your personal info before you even have a chance to learn how to remove Win32 Heir virus (or other viruses and spyware) from your computer.

The other of the two biggest problems associated with the Win32 Heur virus is the possibility of your registry files being infected and corrupted; this can lead to your computer’s inability to work well, and may even cause your whole hard drive to crash. The best way is to find and remove the Win32 Heur file. Be careful when you are doing so, however; there are lots of Win32 files that are absolutely necessary for your computer to work. If you don’t think you can isolate the virus on your own, get a good Win32Heur virus remover and let it do its stuff. This is how to remove the Win32 Heur virus from your computer quickly.…

Nokia N80: A Wonderful Mini Gadget

Nokia mobile manufacturers have recently launched the most anticipated Nokia N-series phones in the mobile market. With multimedia applications coupled with latest technologies, the Nokia N-series handsets have got a huge response from the consumers side. All the phones in the series have their own design and different only on some specific features. The Nokia N80 is one of the N-series handsets that comes with high-end multimedia features and 3G technology. The Nokia N80 with productivity tools and multimedia entertainment features keeps harmony between your personal and professional life with ease. The handset is very compact and weighs only 134 grams. With 3G technology, the N80 is packed with music player, digital camera, mobile internet, WLAN, Bluetooth and more.

The Nokia N80 is just like a mini computer that enriches every mobile users life with its advanced features. With the unique yet advanced UPnP (Universal Plug and Play) technology, the handset can be used as a digital home network. Now with UPnP, you can connect your phone with a compatible PC or TV without using a wire. The images, and video clips can be viewed on the living room TV. Printing images are now easy with any compatible UPnP-enabled printer. The Nokia N80 is the first quad-band phone with 3G, WLAN, EDGE and GSM bands. These technologies enable broadband access from anywhere in the world. In addition to these technologies, the N80 is loaded with Web Browser, Mini Map, high quality QVGA display and PDA's.

The Nokia N80 comes with an integrated 3.0 mega-pixel camera with dedicated camera key, CIF video capture and built-in video stabilization. Capture still and motion pictures and share with your friends and loved ones. Moreover, the Nokia N80 also comes with an expandable miniSD card of up to 2GB that can store up to 1000 images. Supported with a wide range of music formats, the Nokia N80 comes with a digital music player, stereo FM and visual radio support – listen to your preferred music and with FM radio, you can enjoy all time hit music. What else, with visual radio support, listeners can interact with the radio station.

The Nokia N80 [http://www.mobilerainbow.org/nokia/Nokia-N80.html]has everything to please you. …

Free Registry Fix – A Boon For Your Computer System

The software and hardware upgradation is not a preferable solution because the files or viruses remain dormant and even corrupts the new files. Every new installation or de-installation makes some changes in the registry file.

Registry, A Part And Parcel Of Any Computer

In today's technical market, many computers with higher configuration are available, but all contain registry files. In some version of windows the registry files are hidden. The registry contains setting and option of Windows with Microsoft 32 bit version. Everyday, several companies come up to introduce higher configuration. The users prefer their systems to work faster with good speed but are not aware of working of registry. Even with higher configuration, users have to consistently clean the system of viruses and cookies. Thankfully, the tools for free registry fix or to be more specific, free registry error fix can be found on the Internet. Any new installation of software affects results in saving files in the registry.

Remove The Junk And Lessen The Burden

It is essential to wipe off your computer system of all unnecessary registry files. You can get this done from free PC registry fix so that your PC works the perfect way. A registry might be responsible for a lot many problems that erupt in the windows. The more junk files get filled in your registry, the slower your computer gets. A corrupt file not only slows down the speed of the system, it even displays error messages, subsequently crashing the system. Maintaining a proper registry with the aid of free registry fix saves a user from lot of botheration about the performance at high costs. Formatting of hard disk is an option but this can not be done on a frequent basis and moreover, it is a time consuming process. The user is required to re-install all the softwares and again the registry files get affected.

With slow registry, the common errors which come up are in Win32, DLL and related to EXE files. The online scanner helps the user to give a list of files, but user has discretion to remove or retain the files by free registry fix. Any wrong deletion of file can affect the performance of software related to that file. So it is recommended to save the previous version of registry and restore in case of any error, while you get best registry fixes done on your computer. …

How To Fix MsidCrl40 DLL Errors On Your PC

The Msidcrl40.dll file is an important component of the Windows Live Messenger program. Unfortunately, this file may cause problems in your computer and make your Windows unable to read it properly, because, causing your computer to not be able to load Windows Live Messenger. As you attempt to use Windows Live Messenger, some of the error alerts that would have shown are the following:

There are various reasons why this error appears and it is important that you identify the specific causes for you to do the appropriate steps in resolving the issue. It may be the case that other programs are causing the error.

How To Fix MsidCRL40.dll Errors

This can be easily noticed as the error messages will be displayed every time you run that program. To fix this, you have to remove and install the application causing the problem again. You can begin this process by following these steps:

  • Click " Start " and then click onto " Control Panel "
  • Select " Add / Remove Programs " (if you using XP) or " Programs and Features " (Windows Vista & 7).
  • From the list, choose the programs you want to delete and then press the " Uninstall " tab.
  • After that, restart your PC. If you wish to install the application again you may do so by downloading the file you are seeking from the World Wide Web or you can use an installer CD / DVD.

If the error still persists, then you may have setbacks in your registry. Therefore, the last but very important step to do in addressing this issue is to clean the registry of your computer. The "registry" is a central database where relevant files, information, settings and options are stored. Windows constantly access files every time it loads up or runs a program through this database. When the registry gets damaged, corrupted, or clogged up, then Windows will not be able to read the files properly, though, errors like msidcrl40.dll error occur. To resolve this, it is highly recommended that you download and run a reliable registry cleaner in your PC. The available registry cleaning tools had been proven to work efficiently and can remove 99% of errors from your computer. …

Incident Response Computer Forensics

Following the rapid growth in the use of the Internet, the number of crimes involving computers and digital data has increased significantly. When dealing with criminal cases that involve this type of evidence, it is essential that experts with many years of knowledge and experience working in computer forensics are called in to recover files and data.

Fortunately, there is one UK based company, specializing in digital forensics which has an experience of working on more than 6000 cases, meaning clients can rest assured that their forensic investigation will be carried out to the very highest standards.

The company offers a range of computer forensics and E-discovery services, to recover digital evidence from computers, mobile phones, satnavs and many other digital devices. They are currently accredited to ISO9001 and ISO27001 levels and are working towards the complex and stringent ISO17025 accreditation.

Most commonly working alongside the police, this company has worked with a number of law enforcement and independent companies. Their computer forensics services can be used to uncover evidence of fraud, money laundering, hacking, indecent images, drug dealing, murder and terrorism. If uncoovered, this evidence can be used to link individuals to commitments in criminal investigations.

It is due to the fragility of this evidence and the delicate nature of digital data that computer forensics specialists should be called in. Whilst many companies have their own internal computer specialists, many can only skim the surface of complex digital data. Just some of the services that this company has to offer include deleted data recovery, mobile phone forensics, computer analysis, cell site analysis e-discovery.

E-Discovery, otherwise known as Electronic Discovery is a practice that is also related to this particular field. In non-criminal cases, it allows multiple reviewers to view various items of electronic data from digital devices. Just some of the items that can be reviewed using this are e-mails, databases, documents, images and a variety of other files.

The company has a number of case studies on their website for clients to browse. These show the varied cases that this computer forensics specialist has worked on. If you require the help of this specialist company, contact them via telephone or online inquiry form. In case of emergency, there is an out of hours contact number on their website. …

End-User Programming Using Modeling and Semantic Web

Even if programming is made easier, only a proportion of people would actually be interested or capable of doing this. But, there's still an advantage to collections, people in the same team or department as an end user programmer, then all in the team have much closer access to someone who understands their, and the team's tasks, requirements, and projects. This closes the gap between those producing software systems, and those who require the software. This also makes it easier to iterate through solutions and solve problems more quickly and collaboratively.

Software tools to improve and combine UML and other modeling, spreadsheet, Web 2 / Semantic Web, and software solutions are required to allow this kind of end user participatory development and a sustained collaborative organization push towards achieving this. To achieve this, end users and teams need to be able to visualize their solutions both literally as diagrams, and metaphorically via problem solving collaboration. This would reflect the intentions that were expressed decades ago in the form of PC based computing and spreadsheets, but add better information and modeling organization, and collaboration capabilities.

To make the above practical, sustained research is needed in these areas. Such research would have many practical spin-offs. Professor Richard Vidgen (2009) describes research into "how technology is developed and used within organizations." So a way can be provided of applying this research and enabling more end user participation. This research is to test an approach of using digital technology, to make software and modeling development easier for computer literate end users. This would then enable them to solve problems to help their, and their teams' work to be more productive. The current problem is that the communication and translation steps required between users, and software developers, and help desk are too many, and too varied, these results in cost, uncertainty, delays, confusion, and confrontation. The solution is for software developers to develop more customisable software that can be customized by end-users.

An example of the need to apply such research is user's development of spreadsheets, this indicates user's willingness to use and develop software to meet their needs, but productivity in spreadsheet development can be poor, as they are difficult to track, and share. More advanced software tools are often not available to users, or take too long to learn. Semantic Web technologies can provide a solution to this by provision of free and customizable, shareable, and fully visualized applications for use in particular sections. Development of such applications, and their use in industry would be proof of this.

The essence of the problem is that organizations and individuals have many problems resulting from the lack of facilities to allow users to program. This causes many issues, which need to be urgently tackled by organizations in the short term. This creates an ironic dilemma, that the problems caused by lack of end user programming facilities cause there to be a need to tackle these problems via quick fixes because they are so urgent. This …

How To Remove Disk Doctor – Quickly Remove Disk Doctor From Your Computer

What is Disk Doctor

It is a rogue computer optimization and defragmentation software. The design of this fake program is similar to that of a genuine optimization and defragmentation software, but it's either useful nor it is a real program. It should be mentioned that actually it took a name of a legitimate program so be careful in distinguishing between these software's.

How Your Computer Gets Infected With This Fake Defragmenter Program

Disk Doctor infection is transferred to computers through Trojan viruses. This virus really gets around, infecting unsuspecting web user's computer through free software downloads, misleading links and spam emails. Once active it starts computer scanning and displays numerous fake warning messages that state your computer is in critical condition and need to be cleaned with the paid version of the software. The rogue software detects many false issues and displays various critical errors messages on the computer. This is done in order to trick you into thinking your computer has a lot of critical issues. It will inform you about Windows errors, RAM memory problems, and hard drive issues. Your computer will slow down, your legitimate security program will become deactivated and you'll notice a bunch of pop-ups trying to scare you. It may disable regular software applications and will prevent users from accessing certain files. Keep in mind that Disk Doctor is a malicious software which pretends to be a genuine one. Never trust it and never install it on your computer. This fake software does not have any defragmentation function and should be removed immediately.

How To Remove Disk Doctor

It can be easily removed using a Spyware Removal Tool. Spyware Removal tool will scan your computer and will remove all the detected infections automatically. This method is very easy and safe method. …

Website SEO Tip – Should You Be Afraid of Spiders? Not If You're Sticking to a Theme

I think spiders are creepy and scary. They pretty much bring nightmares to millions. Fortunately, in search engine optimization (SEO), spiders can be a very good thing and you do not need to be afraid of them.

First, though, let's start at the beginning. For those of you who need a reminder on spiders, basically, the Search Engines like Google, Yahoo, MSN, Altavista, etc. send out automated computer programs, called spiders, to look at ("crawl") your website and report back what they find.

As sinister and Big Brother as that may sound, it should actually benefit you. What these spider "spies" are looking for is what your website is about, what information you are providing to the search engine user. These spiders are wanting to catalog your site's topics so it can refer visitors (your potential customers) to your website if what you are offering is relevant to their needs.

The problem with spiders is that they really, really need you to tell them what they need to know. Here's what they need to see:

  • They need to see keywords repeated ("keyword density")
  • They need to see links that are related to those keywords ("relevancy").
  • They need to see that other people know what your site is about and go there for your topic ("authority")
  • They need to see enough content to consider you as a subject matter expert.

You need to tell them what they need to know.

Problem? No! I say make it an advantage. Here's how …

Organize your website around a theme. Use the theme as your only focus when developing content for your website. Stay true to it and spiders are much more likely to understand (and report back to potential customers) what your site is all about.

As an example, let's say you are a mortgage loan officer who happens to be a pie aficionado. Even though you make money with your mortgage business, you are an excellent cook with incredible time-tested recipes and you decide it would be fun to sell pies. So, you decide to launch a website called AllAboutYummyPies.com

Okay, it would be alright to have different types of fruit pies, pudding pies, nut pies, whatever. It would be okay, staying true to the theme, to sell pie cookbooks and maybe link to a fruit and nut wholesaler. You could include pie pans, aprons with pictures of pies on them, and books about how to make the perfect crust.

What you would not include is anything at all about mortgages! Even using a silly catch phrase like "grab a larger piece of the pie" in conjunction with mortgages in an attempt to tie the two topics together will only confuse the search engine spider. Just do not do that, especially when you were going so great on the pie theme. Do not confuse the little spider, for pie's sake!

If you want to promote your mortgage business, create a mortgage website, plain and simple. Combining unrelated subjects can damage your search-ability …

E-Learning in Today’s World

Today we live in a world where technology is an active player in our live, ensuring that we have within reach all the information we need to perform our daily tasks, no matter where we are located (home, office, school, train…etc.). In recent years, thanks to the development of new technologies and innovative products (such as: smartphones, netbooks, PDAs, e-readers…etc.) information has become more accessible than ever, and the stream of information available has suffered a noticeable increase.

Even more, the recent advancements in technology, especially in the communication area, have changed the way we work, the way we communicate with one another, and also the way we learn. Regarding the latter domain “learning and teaching”, a major difference in the way we learn and teach today, was brought about by E-learning.

E-learning is what we know today as “electronic learning and teaching”: electronic applications employed in the form of: “Web-based learning, computer-based training, virtual classrooms or digital collaboration”. By employing E-learning, the information reaches the user much faster, via the internet / intranet, CD-ROM…etc., and it has the advantage of being delivered in all sorts of formats: text, image, animation and also video or audio formats.

The advancements in technology and the decreasing costs, have allowed an increase in the number of users who attend on-line institutions. According to estimates, in 2006 more than 3.5 million students were attending on-line courses at institutions of higher education in the U.S.A. This number is expected to increase in the following years to such an extent, that by 2014, 81% of the students (from U.S.A.) enrolled in a post-secondary institution will be taking most part of their courses on-line.

Thanks to the numerous advantages offered by e-learning, this kind of education is becoming more and more popular, prevailing over traditional higher form of education. One such benefit is the (fast) accessibility to information no matter where we are located in the world. Another is flexibility: with a basic Internet connection and a PC, anyone can have access 24×7 to online courses. Last but not least, it helps learners to develop a set of digital competences and skills which will be useful in their day by day activities.

Other positive aspects of E-learning are: reduced learning times, smaller costs (even transportation costs are reduced), the possibility to keep track of the progress and to keep updated all the time no matter location, permanent access to the web content..etc.

E-learning is becoming an important part of the educational process, and day by day it conquers more ground and more followers in the detriment of traditional methodologies.…