Computer Info
Posts tagged Networks
Types and Advantages of computer networks
Dec 6th
You must know that a network consists of more than one commuter that is linked in order to share resources. It is advantageous in that you can exchange files; allow electronic communications, even printers and CD-ROMs). There are three basic types of network that are normally used:
1. Local Area Network (LAN) 2. Metropolitan Area Network (MAN) 3. Wide Area Network
Local Area Network is confined to a small area and is generally limited to a geographical area about a mile apart to other computers. The configuration of LAN consists of software that controls the network and also the software that is shared by other computers that are attached to the network. It consists of a file server, a workstation and cables.
Metropolitan Area Network covers larger geographic areas and covers cities. They are used by local libraries and Government agencies to connect to citizens and private industries.
Wide Area Network connects larger geographic areas all over the world.
The Network Time Protocol – Used in Computer Networks
Nov 16th
By description, this is a protocol designed for transfer of time around a computer network. It works through a hierarchy composed of several strata starting with Stratum 0 which provides the external source of time. Stratum 1 gets the accurate time from a hardware clock which can be got through GPS signals as they are the safest and most reliable. This is because of the many satellites that orbit the earth at any one time. The references are not limited to these as radio signals and broadcasts also provide a safe and relatively reliable source of time. The broadcasts vary with locations and are not as centralized as the GPS signals but they all provide related times, if not equal. Some common ones include MSF from the UK, JJY from Japan and WWVB from the USA.
Reliability being the main issue means that there is need for backup reference clocks in the unlikely event of a signal outage.
These references provide the time with the same precision as the signals and are able to maintain a holdover for extended periods until the signals are regained. These backups are expensive however and the reasons for getting them should be more than the reasons for foregoing them. If you decide you need them to maintain the time then there are crystal oscillators that come at a good price.
NTP client software is usually provided with most OS. Linux has GNU public licence NTP client while Windows has Windows Time service. The advantage of having NTV servers is that is to make sure that the time-stamped transactions are carried out in the specified order. They are the missing link between network time distribution and the global time scale and should be an integral part of any company or organization.
Fixing Computer Networks At Nashville
Jul 31st
Nowadays, every organization, institution and every company have computer networking in their office. Some computer networks create problems that can be solved by the computer networking engineers only. But, you can fix few of the minor problems by yourself. But, the problem is that maximum of people dont have any idea on networking of computers. When their computer network face any problem they call the vendor or call a computer network engineer to fix the problem. If you are living at Nashville, Tennessee or in surrounding areas and seeking computer network repairing then you can visit to the website http://www.nashvillepcrepair.us and seek the help of them because Nashville computer repairing service is considered best in Nashville, Tennessee or in surrounding areas as they are very expert in their field of work i.e. computer repair and networking.
As stated above, you are able to fix some of the minor problems that occur in your computer network, major problems must be fixed by the expert, dont ever try to fix it if any major problems occur in your computer network. So, if you are in Nashville, Tennessee or in surrounding areas then seek the help of Nashville computer repairing service, you are able to take their service in affordable price. Their services inculde
* Network Efficiency
* Network support
* Render Management
* Server and Desktop support
* Server Maintenance & Upgrades
* recover lost data
* DSL, Cable and Fios Setup
* virus and spyware removal
* recover lost data
* computer backup & retrieval
* data backup & retrieval
* home network installation
* Firewall and Internet Security
* computer upgrades
* Provide amazing computer support
* wireless network support.
* Preventative Maintenance
etc.
A Brief Insight on Computer Networks
Nov 14th
A computer network is a group of individual computers linked together by a communication channel. Any computer connected to the network can share and exchange information with another computer in the same network. Other computer related devices such as fax machines, printers, and cameras can be connected to a computer network.
Having a computer network allows faster and easier access of files from any computer in the network. A network allows monitoring of all computer activity in a workplace, providing greater security. Computer networks make communication easier, so you don’t have to leave your desk when you want to say something to a colleague working at the far side of the office. Computer networks also allow hardware access. For example, multiple computers can share a single printer or scanner.
Computer networks are classified according to the type of connection method used. This method is commonly known as “Ethernet”. Ethernet can either consist of Ethernet cords physically attached to each computer or hardware joined by a device called a router, or wireless routers that use high frequency signals to communicate with each other. Optic fiber is also used in some office networks. Different network software also determines the format of data being sent through the network.
A network can be classified according to scale. Local area networks are small scale networks that connect multiple computers together in a room, an entire house, or several buildings. Wide area networks allow computer-to-computer access across continents. Houston network support companies can give you helpful information about computer networks.
When setting up a network in an office or in your home, it is important to carefully choose the Ethernet specifications that would be most appropriate for the location. Wireless networks are generally better for homes and small offices, but using Ethernet cables can be more practical in small rooms. Houston computer network support professionals can assist you in configuring security settings when establishing a computer network.
COMPUTER NETWORKS AND INTER CONNECTION OF COMPUTERS
Oct 19th
We know that interconnection between computers are essential for the proper working of a big organisations.Computers are interconnected inorder to share the informations between them..Here iam going to simply describe the necessity of computer networks , advantages of networks and methods of interconnecting computers.
How to copy informations in a computer to another?? We can use a CD , pendrive etc.. But is these methods possible for massive transactions of data??
NO…NO. For that, there comes the networking of computers.Exchange of informations between computers is essential in offices, bank,research centers etc.. Connecting computers together so as to exchange informations easily and rapidly is called Networking.
For detailes visit
http://expertscolumn.com/content/computer-networking-and-methods-inter-connecting-computers
ADVANTAGES OF NETWORKS
A) Resource sharing
Many of the peripherals used along with a computer are costly.When we connect uses many computers, we have to connect many peripherals.This expense is very large .This problem is solved by networking. Suppose there is only printer with computer A.If we want to print the data from a computer B, which is interconnected with computer A.When we give print command to computer B, it sends the print command along with the data to computer A.Thus we get print through computer A.
We can connect one computer to internet through telephone line and connect other computers through network,share internet services available in the computer having internet connection.
B) Centrally Controlled Informations
For some computers under network,there is no need to copy a data to all computers.Just copy the data in one computer and it can be accessible from other computers in the network.But some of the data may be of confidential in nature.It cannot be allowed to others to access that data.Some control methods have to be adopted.There should be a facility to decide what information is accessible by whom and what kinds of access rights can be provided.A person is made responsible to arrange and control the computers in a network in this manner.
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