SYSTEM DESIGN: MONITOR
Monitor is sometimes called Visual Display Unit (VDU), enables the user to see that the commands entered have been carried out. User can spend many hours per day looking at a monitor because of this, it is very important in the system, and one that is sometimes over looked when upgrading. In monitor we have different inches, 15,17,21 inches monitor, we have flat screen etc.
UNINTERRUPTIBLE POWER SUPPLY (UPS)
Uninterruptible Power Supply (UPS):- This is a device designed to maintain power to a computer system for a specified time. Before the main supply fail. In generally, a UPS will maintain power long enough for the system to close application and shut down safely. The length of time that a particular UPS can maintain power will depend upon his capacity and the sizes of the load it has to supply.
A UPS contains a battery that is kept charged, as far main power is available. When the main power fails, the battery takes over. It is important that the battery is handling well in order to maintain its efficiency. A UPS contains:-
- Typical enhancements
- Automatic shutdown of attached computer system during a prolonged main failure
- Power supply management features such as data logging
- Raising alarm signal
- Automatic restarting of systems when main power I restored
TOOLS FOR NETWORKING
Gripping tools: Is used for gripping the network cable
RJ45: Is a tools connectors use to connect to a computer RJ45 have spins or cable connection
Network cable:- They are the cable connected to J45 that make the computer to see each other. It is the main component in LAN Network.
Hub:- It is network component is equipped with standard equipment.
It is a central point that connects many systems together. In Hub we have 8 to 12 ports we also have active and passive.
Active Hub:- Most Hubs are active they regenerate and retransmit the signal the same way a repeater does. Active hub requires electrical power to run it.
Passive Hub:- Some types of hub are passive e.g wiring panels. They act as connection points and do not amplify or regenerate the signal. The signal passes through the hub. Passive do not require electrical power to run.
Server:- A server is designed to provide access to many file and printers while maintaining performance and security to the user. In network, most one has dedicated servers. Dedicated servers are one that only function as a server and are not used as a client or workstation. Servers are “dedicated” because they are optimized to quickly service request from network client to ensure the security of files directories. Server we’ve different types in each network both in LAN and WAN and the servers do different work. They are:
File and printer server
File and Printer server: They manage user access and use of file and printer resources. In file and printer server are for file and data storage. E.g. running a word processing application. They would run on your computer. The word processing document store on file and printer server is loaded into your computer memory so it can be edit or use it locally.
Application server: They make the server side of client server application, as the data, available to client with an application server, the database starts on the server and only the result of the request is down loaded to the computer.
Mail: They manage electronic messaging between network users.
Fax: They manage fax traffic into and out of the network, by sharing one or more fax modern boards.
LAN tester: is use to check the network cables after gripping it to know if its function or not.
Network card: it is the card use for network connection. It helps the system to see each other.
Patch panel: is use for speed and it is mostly use for banks. The speed is 33,000.
Trunk: is only use for neatness
Switch: it is one of the tools for networking
Types of switch
D-link - has 5 ports
Sure COM - has 8 ports
Light wave - has 16 ports
3 COM - has 24 ports
E.g. connection using switch but for (LAN) local area network
SHARING A SYSTEM
When you are configuring a system the drive C, in order to access the information or documents of the other systems, take not of the following after sharing the drive C. there are information below you click the two boxes with the sign of mark or otherwise when there is a sign of dollar ($) you unclick it then you look down the task bar to two system on the network if there is any sign of red icon below it, you unclick it also you check the network configuration the user one or server is to be on 100 base while the user two is to be on 10 base.