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MAC addresses are an example of an address that resides on the datalink layer of an OSI model. The addresses themselves are written with proper into the hardware at the time the hardware is mass-produced.

How does the MAC Address burned into the Data Link Layer?
It was important to comprehend in what way a data link layer is set up. The DDL, known as Layer 2 in reality has two sub layers. One is referred to the Media Access Control (or MAC) and the other is the Logical Link Control. It is inside the MAC sublayer that the MAC address was burned during the production. The main reason for this process is to be certain there was a default address attached to the hardware and there is none extra programing of an address is needed in order that the procedure to happen.

In What Way the MAC Address Worked?
The essential procedure of the MAC address in the sublayer is to assist in a way that a node inside a electronic network gains access to data points and serves to supply the method that is used to transport the data as well. Performing as an identifier, the MAC address fundamentally provides a point for data to collect and act as a launching place for data to be transported away and broadcast.

How is a MAC Address Set Up?
The typical MAC address is forty-eight bits long. This amount of bits makes the form of addresses virtually endless, eventhough it is potential to calculate the exact number of MAC addresses that can be created with this number of bits. It is presumptive to state the amount of forms is adequate to assure there is no redundants for many years to come. In actual script, the MAC address will be translated into a series of both alphabetic characters and numbers.

Can A MAC Address be Changed ?
Of Course. While it is true the initiating MAC address is burned in by the time of production,
there are software packages that can help to change an address with relative ease.
The computer software will in general identify the next logical form and pass it for
reference to the user before exchanging the original address.

Taking care of your computer is probably the last thing you ever thought if it is compared to taking care of your house, kids, pets or business. If you are a computer user and you often used your computer, then you should really consider of doing regular maintenance.

Starting by maintaining your computer hardware, maintaining your operating system then computer applications.
There are some important components in your computer that needs to be taking care of. In this article, we will discuss one of them and how to keep it clean.

One of the most important components in computer hardware is a fan. Fan is located in the computer’s CPU also known as processor, it responsible cooling down your computer’s processor. If you install a fan in your computer’s case than if will keep almost your entire components cool. When attach a cooling fan on your hard disk then it will keep your hard disk cool.

So, in short words, a cooling fan is important.
But, a cooling fan is also a trouble for your computer if you don’t clean it up. A dirty cooling fan contains dust and can make your cooling fan to stop working, if it stops working than your processor can overheat and stop working well.

Cleaning up your computer from a dust is important and you need to do that regularly. If you are not sure on what you’re doing, don’t take any risk because it will cause serious damage to your computer. In that case, taking it to the hands of the professional would be a better choice. Just take it to a computer technician for a complete maintenance.

Have you ever loss your important data ? Well, i have.
At that moment I really agree on what people say that prevention is always a better cure.
Here are some steps that I want to share with you in order to prevent data loss.

1. Use an updated Anti Virus software and always keep it up to date
Antivirus is a special software developed to protect your computer against malicious computer virus.
Some virus can remove or modify your data without you ever realize it and some virus can cause your computer to crash.
So make sure to keep your Antivirus software uptodate with the latest patch and signature files for maximum security.

2. Protect your computer against power surges with UPS
UPS is an Uninterruptible Power Supply. It protects your computer and data during a power surge or failure.
UPS is equiped with a spare battery that provides you some time to save your documents and shutting down Windows properly so that you don’t lose any files and avoiding your computer hardware components from the possibility of damages.

3. Make sure your machine is dry and keept in dust-free area
Place your computer far away from places that can be directly exposed to rain, sun or humidity.
These places have the tendency to cause rusting and can damage your hardware components.

4. Don’t try to repair or open up your computer without any assistance
If you have no experience in repairing computer hardware, you may accidentally damage the circuit boards,
hardware components or even worst, get an electric shock! Always consult with an expert.

5. Don’t over-tweak your system
Avoid modifying your windows registry or perform an overclock to your hardware in order to boost the performance unless if you are definitely sure on what you’re doing. I’m sure you don’t want to fry your computer.

6. Make a backup copy and keep them at an off-site location
This helps protecting your backup copy from damage, just in case if there is a natural disaster such as flood, fire or any kind of disaster.

7. Don’t move your computer while it still running/operating
I’m sure that you don’t want your power cord falling off and generates a data corruption or a physical damage to your hard disk such as a head crash while you still working on a project.

8. Avoid sharing access to your computer with strangers on the network
Your data can be stolen or modified if anyone on the network can have access to your files.

9. Perform hard disk maintenance
Delete temporary files, unnecessary files and defragment your hard disk regularly.
This can help you keeping up your hard disk on good condition.

10. Aware of failure symptoms
When you hard disk starts making noises and your systems are getting cranky, it is time to start making backups on all of your data files.

I hope this steps can help you to prevent from loosing your data files.

RAM is the short of Random Access Memory.
It performs as a temporary memory, just like a human brain to store amount of informations.
RAM can be access through the computer’s brain called the CPU which stands for Central Processing Unit.
RAM is capable of retrieving data only when the computer is on.
When the computer is turned off the RAM is no longer accessible.
ROM chips is built in together with BIOS (computer boot firmware) allows the RAM information to be retrievable when the computer is rebooted.

RAM size and Location on the Computer System

Most computers were already equipped with 256 Megabytes of RAM on the computer.
Additional RAM can be placed within the system. However, usually a computers mainboard has a limitation of RAM that can be added to a computer system. RAM as its name, is not really random.
RAM is highly controlled and the storage can be directly ascertained. There is a decisive method that RAM uses to make its memory become available to certain areas of the computer system.

Forms for RAM

RAM consists of microchips and each module has a place of their own (slots).
Increasing the capacity of RAM can be done by adding an extra module into a different slot.
Usually a new computer system can be added more than 3 GB of RAM’s.
An electronic path allows the processor to connect to the RAM so that both units can work together.

RAM is an important part

RAM serves the very important function of retrieving information that must be accessed in a quick manner.
This operation is very similar to the human brain’s function in retrieving necessary facts from short term memory.
Open files and the utilization of applications on a computer systems requires the assistance of RAM.
Users that play alot of video games with detailed graphics or keep a lot of folders open while doing on another tasks will need the use of additional RAM. This will allow them to better access the information they need when the time comes.
RAM can keep information while the computer is on and it can provide information that required a quick access.
Thesedays, operating system comes with a new and greater feature and it requires a large amount of free RAM.

Basic knowledge of networking is a great asset in today’s world.
Eventhough you don’t want to know the details about network and network hardware, your ability to make a simple connection between your computer to another computer, a router or a peripheral will be a great advantage for yourself.

It is a good idea if you have a basic understanding of the equipment you need and how it works.
Through this article, you will learn the basic building blocks of a computer network and various types of network hardware.

A network definitely will require a computer as the object.
If this subject is new for you, a very good first lesson is attempting to connect between two computers. Either using an ethernet cable or wireless connection until both computers connected and able to share information. If you can do this, then CONGRATULATIONS, you have created your first network.

However, when you need to add more computers, printers, scanners, another peripherals, and internet connection, things are getting a lot more complicated.

The basic components for home network is listed below, as for business network components are definitely more complex.
So, here is a basic hardware overview needed to build a network.

Cable or wireless?
The most basic requirement of any network is that the various components are connected to each other.
There are two choices of connections, Cable or Wireless.

Cable.
Ethernet cable remains the fastest amongs the two types of connections and also an important building block of most networks, especially for a large business network where high data transfer speeds are essential.

Wireless.
The next generation of wireless is prepared to close the gap on ethernet cable in terms of speed, and offer a much greater range.
Wireless connection is often used in small networks because it can reduce the expense and the mess of ethernet cables. To maintain this kind of connection is easier and cheaper then cable connection.

Modems
A network can be configured without connecting to the internet, but these days this kind of policy is rarely happen.
For a network to be connected to the internet requires a modem.
Most modern home or small business networks will use a Cable/ADSL modem. By using ethernet, these usually preserve speeds of up to 10 Mbps. However, not many internet service provider serve connection with this speed. Although dial-up modems and USB modems are still used, home and small business users prefer to use ethernet modems.

Routers
A router is important for all networks because it provides the connection between Local Area Network (LAN) and Wide Area Network. In this case, LAN refers to home or small business network, and WAN refers to the internet.
Most home network are using combined modem, router and switch which will permits the network to make a connection to the internet and permits any computers, peripherals inside the network to communicate with each other.
As for the very huge business networks, they will use router and switch separately as their network devices.

Switches and hubs
These two network hardwares often cause a lot of confusion about the differences.
Both network hardware permits computers and devices inside the network to communicate.
However, there are some substansial differences between the two network hardware.

Switch.
Between the two network hardware, switch is the better and the more expensive.
Switches are important network hardware for a large networks because it makes transmitting information much more efficient.
A switch can determine which computer or peripheral destination inside the network, and it will only send to its intended destination.
The advantage of using switch as a network hardware can be noticed on a larger networks.

Hub.
Much more simple network hardware that can connect 4 to 24 devices.
The data will pass through the hub but the hub will not interfere with the data in any way.
Therefor, data sent through a hub will be sent to, and can be accessed by, all devices on a network.

Firewalls
Firewall is a network hardware that is not really necessary for home networks.
If you are using Windows as your operating system, they usually have built in firewall software that should be more than enough to protect your network.
However, it essential for business networks that keeps large amounts of sensitive information/data to utilize a very good network hardware which is firewall.
Every kind of information that comes from outside the network have to pass through the firewall before it can reach the network’s main switch.
If the firewall is properly configured by the network professional this should provide all the security for the business.
Further protection using a firewall software inside the network is also good option to secure the network.