Computer Network Technology

What is a computer network? A computer network is a set of computers, printers, and other devices that are connected to each other to share information and move data through cables. Many users can print with the same printer or use the same software at the same time. Computers that store primary data and act as data centers are called Servers, while computers that are connected to networks and retrieve data from Servers are called Workstations.

Various Networks

1. Local Area Network (LAN) A network that is limited by a small area usually used by a small office in a building or school. Usually not far from 1 km square. Most LANs use cables and LAN cards to connect one computer to another. Each computer that is connected to a LAN has a different Internet Protocol Address. Usually abbreviated as IP Address. LAN can also be set up through Wireless Technology which has speeds of 10 to 10,000 Mbps. Wireless LANs can use infrared or radio frequencies.

LAN Benefits

a. Sharing files and printers is easy between computers. b. The risk of data loss caused by a virus can be reduced. c. If there is one computer connected to the modem, all computers can access the internet. d. There is a lot of space in the storage system (hard disk) for storing documents. e. Files stored on the server can be accessed by client computers with authorization. Authorizations can be made according to the company’s organizational structure.

2. Metropolitan Area Network (MAN) This type of network usually has a larger area than a LAN or can contain networks from several LANs that are connected to each other. Example MAN is a network built on a broad campus complex.

3. Wide Area Network (WAN) WAN is a type of network that …

Items to consider Once you Would like to Obtain Pc Hardware

The small business of computer hardware is becoming extremely profitable currently owing for the truth that many do get pc hardware for 1 reason or the other. Shopping for personal computer hardware might not be usually effortless no matter if that you are shopping for it by means of the internet or within the brick and mortar shops. There are certain things that you simply need to take into account ahead of you order. Your probabilities of receiving great ones rely on the manner you shop for it. Should you can do your homework pretty excellent, you are going to certainly get good hardware. If you invest in anything with no checking it out, then not surprisingly you might not get an excellent item.

For your computer to operate properly, you may need to go for the most beneficial laptop components readily available in the marketplace. Regardless of how fantastic the computer software you’ve is, in case you usually do not obtain laptop hardware with superior high quality, it may not perform correctly. In order to do this, it is actually important that you just have adequate expertise concerning the several elements of computer hardware.A?A?This can allow you to to know by far the most necessary hardware parts that you can’t do without. For instance, quite a few people today don’t realize that the motherboard may be the most important element of a computer that carries out both mathematical and logical operations in your pc.

Yet another thing which you need to consider whenever you would like to get computer hardware is definitely the goal for which you would like to use your personal computer. This will likely identify the excellent and brand you might have to have. As an example, if you are going to be employing your computer …

What is the Internet Content Filter?

Internet content filters are used to prevent users on a computer from accessing websites deemed inappropriate and downloading files that may affect the security of a computer. Many Internet content filters are in place to block websites that contain pornography, hate groups, and other sensitive, and possibly illegal, activities and items. Many content filters are software based, but a large amount of organizations are moving toward hardware-based filtering, taking advantage of features in routers.

Companies need to be protected both legally, and in terms of network and information security. Content filters help to prevent programs and files from being downloaded that may be malicious, stealing company data, infecting systems with viruses, and more. Internet content filters are a necessary evil that actually help security.

Additionally, Internet content filters help to keep both an organization and an individual legally protected. By blocking pornographic websites, organizations are helping to prevent sexual harassment lawsuits against themselves, as well as the individual accessing the website. Hate-filled websites dealing with racism, sexism, and more are also blocked to prevent offending anyone, and leaving an organization and individual open to a hate crime related lawsuit. For the large amount of protection these filters provide, the small hindrance and annoyance they bring about are very minor.

Whether it involves using the internet at work, school, or the library, most organizations utilize IT specialists, such as site administrators or media directors, to assist with the decision of which internet filters to implement. These specialists can also help organizations monitor the daily use of the Internet and create website tracking methods.

For most library institutions, it is up to the local library board to decide which websites are appropriate for their visitors to use. The librarians who work at an individual location may have a significant amount …

Know More About the Metro Ethernet

The Metro Ethernet is a kind of computer network system which aims to connect various subscribers as well as various business people together on the internet network. Moreover, with this system, you can also get a chance to connect with the service network. Through this system, many people can get connected together with one service network.

In the metropolitan cities, nowadays, you will see these kinds of network systems in places like big offices or schools. There are plenty of reasons for the popularity of this network. Here we will discuss some of these factors.

The first and the foremost reason is its low cost. Generally, compared to other networks it is quite economical. The reason behind this is its simple design, the system uses a kind of technology called the layer 2 switches and this makes this it very effective yet affordable.

Some of the basic advantages of the Metro Ethernet are that this system is very fast; here the internet speed is very fast as compared to the dialup. The wireless networking system will give you the perfect internet experience. Setting up the network system is very easy, here all you have to do is just plug it in and start using.

It is a reliable networking system that will offer you a better and much easier management of bandwidth. According to your need you can expand this network and fulfill your purpose.

Nowadays, it is just not a networking option for the business people but also it is one kind of an asset for the business. In schools you must have seen a computer lab; here the computers usually work on such a system. Even the advisors also use the same system of network like the other computers in the schools.

So, if you are …

Does your small company train your employees to prevent cyber attacks or hackers from getting into your computer system? If not, you should definitely think about doing so. Far too many employees are lackadaisical when it comes to their passwords, and the inconvenience of typing in passwords, or protecting their personal tech devices which are now interfacing with the IT systems in their companies.

The other day there was an excellent blog post by Dan Rowinski posted to Read-Write-Web Online Citizen Journalist News titled; “Employees, Not Hackers, Are the Biggest Threat to Security” published on June 27, 2011. Dan rightfully points out that internal security is paramount and that it is “not always a tech issue, for instance in the article he states:

“While groups like Anonymous and LulzSec use sophisticated hacking methods (like SQL-injections), the greatest threat to security within the government and large corporations does not come from programming vulnerabilities; it is their employees.”

Okay so, he’s right on the money, in fact everyone from the DHS to the top computer security firms point out that it is usually mistakes which are made in the IT department or with employees who have access to the system who do not take security seriously. Either that or they are too ve to the issues with social engineering. Thus, if you are truly concerned with cyber attacks, viruses, worms, and hackers, then first, you must worry about insider threats.

Not just criminality inside the company or organization, but also “brain farts” or stupid actions by employees who do not seem to take the networks security or data safety seriously. Perhaps they have poor passwords for their personal tech device which can then be accessed via a coffee shop WiFi to gain authentication to a network, once in and once …