What
is a network computer, how to build it, build it yourself or need to do
a network installation services and what you need to know?Computer
networks in perkantoranSecara simple definition of computer network is a
collection of computers that are connected to each other either via
wired network or medium air or radio waves. It is intended that all these interconnected computers can communicate with each other within the limits of safety is applied. Thus it is possible to be able to share or sharing documents, printers, and any other resources.
A computer itself is basically a network where all the components that make up a computer that communicate with each other via a bus line in it. Between the CPU (central processing unit - the brain of a computer), ROM (read only memory - read only memory containing machine language), RAM (random access memory - memory temporary storage for processing), and all supporting elements communicate with each other to carry out their duties individual to complete a task that prosessing including the run command is typed via keyboard, process the application software running on your computer, or assist in the transmission of data over the network adapter (NIC) through a transmission medium to reach destination computer.
Two computers are equipped with a NIC (network interface card) adapters that are connected to each other via a network cable is a computer network and can communicate with each other. Normally this configuration done to backup data from one PC to another PC before the PC is upgraded or re-install the OS (operating system) it. This is a classic way to backup data from one PC to another PC. Everyone can do it, do not need the services of a computer network expert. Now a lot of backup data using an external hard drive via a USB port.
Two cell phone equipped with Bluetooth and brought closer to each other to transfer songs, videos or pictures is basically a network computer as well. Advanced mobile phones and other gadgets are in the form of mini-computing devices especially now that tablet computers are mobile, compact and light from very widely used. Call it the iPad and tablet computers like some sort, while the computer is now packaged in a device called the All-in-one Computer. Figure 1 shows a diagram of the two PCs are connected using a network cable and two cellular phone connected via Bluetooth communication.connect two pc
Gb. 1 Network between two PCs or between two mobile phones
Computer networks of two or more can be made by using an Ethernet switch. Many commercially available Ethernet switches that contain multiple ports (RJ-45) port can be 8, 12, 16, 24 or 48 ports. Network with this switch with a few computer connection is a network of local or commonly known as a LAN (local area network). LAN network connecting multiple computers, switches, printers and other network devices using the network cable to the Ethernet technology.
Computer network switch
Gb. 2 Network computer with a switch
Gb. 2 shows the connection diagram three computers connected to an Ethernet switch using UTP network cable. Network with these switches are not connected to the outside world (Internet), only local course.
What if want to deal with the outside world (Internet)? To be able to touch the outside world in general need to subscribe to a broadband Internet connection through an Internet provider (ISP) eg through Telkom Speedy. The next device is a modem (and router). This modem is the liaison between the customer ISP central office via telephone or network cable fiber optic network.
With the internet connection, basically the network is no longer a local computer (LAN - local area network), but it is connected to the WAN (wide area network) connected to the global network alias. Due to the WAN connection, we can communicate with the whole world via email, exchanging and sharing data, streaming video from the internet, voice communication via the Internet, to participate in a video conference or webinar, etc.. For business scale computer networks with many network resources, of course you need IT personnel to build or pay for consulting services. Figure 3 is a diagram connect multiple computers to the Ethernet switch and a modem-router from the ISP.
Local network with internet connection
Gb. 3 local network with internet connection
In general, many modem device integrated with a wireless Access Point or wireless device commonly called a gateway. The following figure is a diagram of a computer network using a wireless gateway router. With the wireless network gateways, our local network to a wireless network or commonly known as Wi-Fi (wireless fidelity).Wi-Fi computer network with a wireless gateway
Gb. 4 computer network with Wi-Fi wireless gateway
With a wireless network / Wi-Fi then some mobile devices such as laptops, smart-phone, iPad or other tablet computer to communicate or connect to the network without wires. Even with adding a wireless print-server to the printer, we can access the wireless printer and the printer can put it in a safe and easily accessible without having to connect to the network using a cable.
Connection to the internet not just through broadband cable networks, could also use a wireless cellular network. Cellular network provider with 3G or 4G technology today not only provide voice services alone but also Internet data services. Cell phones today can already be used to access the Internet simultaneously. Whether we can also share your 3G internet connection with several other mobile devices or laptops and computers. Of course, there are many wireless routers currently designed for sharing internet using 3G internet.network router with cellular
Gb. 5 Network computer with 3G router
Figure 5 shows the diagram of a computer network with internet sharing cellular (3G) using a 3G wireless router. Generally 3G router has a USB port to insert a cellular modem 3G USB so that the account can be used together to access the cellular internet. Like the wireless router as usual, all the mobile devices such as laptops, tablet computers and other smart-phones can share the Internet through Wi-Fi networks.
Offices or corporations today have certainly build your own LAN network to support productivity and the need for computer processing to support applications such as enterprise database applications eg finance database, or database applications that are modular, the modules integrate finance, maintenance, material , marketing etc which is called ERP (Enterprise resource planning). ERP is widely used in large-scale enterprise networks or networks that have enterprise LAN networks spread in various locations both in the state and across the country. Generally all LAN networks are integrated in a single network enterprise with LAN network connections between them with WAN (wide area network). Scale computer networks is a complex business, so take a lot of network engineers and even need the services of a consultant to build it.
For WAN connections we can work with service providers with the technology WAN WAN connection they provide eg using leased lines, frame relay or other internet broadband. With a network of inter-enterprise LANs, an enterprise can use the same single database that is always up to date and can be accessed by all users on their enterprise networks, of course, with certain limitations. This is to avoid accessing different databases by the branch office with the updated database at headquarters. Communication via the internal network between headquarters and branches become more secure and faster.
Sometimes that in an easy to access the corporate network is not limited to the corporate network when the user is at the location of the company. Even access to it can be opened so easy to be able to access corporate data can be done while the user is away from the location of the corporate LAN. This connection is usually done via the Internet by creating a secure tunnel to the technology VPN (virtual private network). VPN technology is even used for inter-site linking course at a cheaper cost.
A corporate network must keep all information on the storage-storage location of the data stored on the internal network. Information is an asset that companies also need to be protected from any threat of danger to either the threat of data theft from outside (Internet) as well as from within. For a network that must be given maximum protection against any threat of danger.
In principle there are two kinds of threat to our network, including information assets on the network that is the threat of the Internet and internal threats from their own. The danger of the internet in general internal network is equipped with a firewall at each Internet entry point. It's not enough just to firewall, internal network from any given protection against all kinds of virus attacks coming from the Internet. Standard firewall simply can not provide total protection to the internal network. The virus is also a major enemy and threat to corporate information assets.
Virus attack any weak points contained in the network system. For that patch management system of the OS (Windows and the like) also need to be implemented to cover all kinds of network weak points. Besides this, virus management system should also be implemented.
In addition, the information stored on any network system also need to be protected in the event of a case of a disaster, that information can still be saved or restored when system network infrastructure destroyed. To restore a backup strategy that should also implemantasikan neat, for a moment lost or damaged can be restored.
A computer itself is basically a network where all the components that make up a computer that communicate with each other via a bus line in it. Between the CPU (central processing unit - the brain of a computer), ROM (read only memory - read only memory containing machine language), RAM (random access memory - memory temporary storage for processing), and all supporting elements communicate with each other to carry out their duties individual to complete a task that prosessing including the run command is typed via keyboard, process the application software running on your computer, or assist in the transmission of data over the network adapter (NIC) through a transmission medium to reach destination computer.
Two computers are equipped with a NIC (network interface card) adapters that are connected to each other via a network cable is a computer network and can communicate with each other. Normally this configuration done to backup data from one PC to another PC before the PC is upgraded or re-install the OS (operating system) it. This is a classic way to backup data from one PC to another PC. Everyone can do it, do not need the services of a computer network expert. Now a lot of backup data using an external hard drive via a USB port.
Two cell phone equipped with Bluetooth and brought closer to each other to transfer songs, videos or pictures is basically a network computer as well. Advanced mobile phones and other gadgets are in the form of mini-computing devices especially now that tablet computers are mobile, compact and light from very widely used. Call it the iPad and tablet computers like some sort, while the computer is now packaged in a device called the All-in-one Computer. Figure 1 shows a diagram of the two PCs are connected using a network cable and two cellular phone connected via Bluetooth communication.connect two pc
Gb. 1 Network between two PCs or between two mobile phones
Computer networks of two or more can be made by using an Ethernet switch. Many commercially available Ethernet switches that contain multiple ports (RJ-45) port can be 8, 12, 16, 24 or 48 ports. Network with this switch with a few computer connection is a network of local or commonly known as a LAN (local area network). LAN network connecting multiple computers, switches, printers and other network devices using the network cable to the Ethernet technology.
Computer network switch
Gb. 2 Network computer with a switch
Gb. 2 shows the connection diagram three computers connected to an Ethernet switch using UTP network cable. Network with these switches are not connected to the outside world (Internet), only local course.
What if want to deal with the outside world (Internet)? To be able to touch the outside world in general need to subscribe to a broadband Internet connection through an Internet provider (ISP) eg through Telkom Speedy. The next device is a modem (and router). This modem is the liaison between the customer ISP central office via telephone or network cable fiber optic network.
With the internet connection, basically the network is no longer a local computer (LAN - local area network), but it is connected to the WAN (wide area network) connected to the global network alias. Due to the WAN connection, we can communicate with the whole world via email, exchanging and sharing data, streaming video from the internet, voice communication via the Internet, to participate in a video conference or webinar, etc.. For business scale computer networks with many network resources, of course you need IT personnel to build or pay for consulting services. Figure 3 is a diagram connect multiple computers to the Ethernet switch and a modem-router from the ISP.
Local network with internet connection
Gb. 3 local network with internet connection
In general, many modem device integrated with a wireless Access Point or wireless device commonly called a gateway. The following figure is a diagram of a computer network using a wireless gateway router. With the wireless network gateways, our local network to a wireless network or commonly known as Wi-Fi (wireless fidelity).Wi-Fi computer network with a wireless gateway
Gb. 4 computer network with Wi-Fi wireless gateway
With a wireless network / Wi-Fi then some mobile devices such as laptops, smart-phone, iPad or other tablet computer to communicate or connect to the network without wires. Even with adding a wireless print-server to the printer, we can access the wireless printer and the printer can put it in a safe and easily accessible without having to connect to the network using a cable.
Connection to the internet not just through broadband cable networks, could also use a wireless cellular network. Cellular network provider with 3G or 4G technology today not only provide voice services alone but also Internet data services. Cell phones today can already be used to access the Internet simultaneously. Whether we can also share your 3G internet connection with several other mobile devices or laptops and computers. Of course, there are many wireless routers currently designed for sharing internet using 3G internet.network router with cellular
Gb. 5 Network computer with 3G router
Figure 5 shows the diagram of a computer network with internet sharing cellular (3G) using a 3G wireless router. Generally 3G router has a USB port to insert a cellular modem 3G USB so that the account can be used together to access the cellular internet. Like the wireless router as usual, all the mobile devices such as laptops, tablet computers and other smart-phones can share the Internet through Wi-Fi networks.
Offices or corporations today have certainly build your own LAN network to support productivity and the need for computer processing to support applications such as enterprise database applications eg finance database, or database applications that are modular, the modules integrate finance, maintenance, material , marketing etc which is called ERP (Enterprise resource planning). ERP is widely used in large-scale enterprise networks or networks that have enterprise LAN networks spread in various locations both in the state and across the country. Generally all LAN networks are integrated in a single network enterprise with LAN network connections between them with WAN (wide area network). Scale computer networks is a complex business, so take a lot of network engineers and even need the services of a consultant to build it.
For WAN connections we can work with service providers with the technology WAN WAN connection they provide eg using leased lines, frame relay or other internet broadband. With a network of inter-enterprise LANs, an enterprise can use the same single database that is always up to date and can be accessed by all users on their enterprise networks, of course, with certain limitations. This is to avoid accessing different databases by the branch office with the updated database at headquarters. Communication via the internal network between headquarters and branches become more secure and faster.
Sometimes that in an easy to access the corporate network is not limited to the corporate network when the user is at the location of the company. Even access to it can be opened so easy to be able to access corporate data can be done while the user is away from the location of the corporate LAN. This connection is usually done via the Internet by creating a secure tunnel to the technology VPN (virtual private network). VPN technology is even used for inter-site linking course at a cheaper cost.
A corporate network must keep all information on the storage-storage location of the data stored on the internal network. Information is an asset that companies also need to be protected from any threat of danger to either the threat of data theft from outside (Internet) as well as from within. For a network that must be given maximum protection against any threat of danger.
In principle there are two kinds of threat to our network, including information assets on the network that is the threat of the Internet and internal threats from their own. The danger of the internet in general internal network is equipped with a firewall at each Internet entry point. It's not enough just to firewall, internal network from any given protection against all kinds of virus attacks coming from the Internet. Standard firewall simply can not provide total protection to the internal network. The virus is also a major enemy and threat to corporate information assets.
Virus attack any weak points contained in the network system. For that patch management system of the OS (Windows and the like) also need to be implemented to cover all kinds of network weak points. Besides this, virus management system should also be implemented.
In addition, the information stored on any network system also need to be protected in the event of a case of a disaster, that information can still be saved or restored when system network infrastructure destroyed. To restore a backup strategy that should also implemantasikan neat, for a moment lost or damaged can be restored.
Tidak ada komentar:
Posting Komentar