4.3.1 - Networks (1)
Teacher recommended
?- Created by: Annie
- Created on: 07-05-13 16:49
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- Networks
- Why have a network? (In comparison to stand alone computers)
- Easier to keep data up to date
- A user can access their data from any computer on the network
- Changes can be seen instantly on all computers
- Don't have to go around each computer individually to make changes
- Back ups can be done centrally
- Network software is cheaper for large groups of computers
- In comparison to buying software for each individual computer
- If one computer crashes, the data is still available on other ones
- Ability to share peripherals (printers, scanners etc.)
- Files can be shared with other users
- When these are updated, everyone can have a copy
- Restrictions and permissions set on certain users
- Software only has to be installed once
- Restricting factors of a network
- Maintenance, technical support
- Employing a network manager, technicians etc.
- Viruses can be spread more easily
- Time and disruption to setting up
- Not being able to maintain the network
- If there's a problem with the sever, the whole network suffers
- Initial cost of everything
- Connecting, new software, back up old computers, wireless routers, servers etc.
- Maintenance, technical support
- 6 Costs of a Network
- Staffing
- Network manager, technicians
- Additional staff for installation
- Network manager, technicians
- Training
- Time to teach staff
- How to use, update, maintain etc.
- Cost to employ trainer
- How to use, update, maintain etc.
- Time to teach staff
- Maintenance
- Network manger, technicians
- Keeping software up to date
- Buying new software
- Sorting out problems
- Buying new software
- Keeping software up to date
- Network manger, technicians
- Software
- Network software, new updates, installation time, anti-virus, Network OS
- 3rd Party Communications
- Internet provider
- Hardware
- Wires, cabling, computers, servers, routers, printers, scanners and network cards etc.
- Staffing
- Why pay an outside firm rather than employ ICT staff directly?
- Higher level of expertise
- Less time finding someone to employ
- Interviews, advertising etc.
- Employees can gather extra help from others within their firm
- The firm can replace staff if they are ill etc.
- ICT staff come from a trusted source
- They would be more up to date with the latest developments
- No professional qualification that they must have
- Factors that influence choice of network
- Cost
- Size of Organisation
- LAN or WAN?
- Cabling, Wifi, Telephone usage?
- Larger sites needs greater maintenance
- Bigger target to security attacks
- How will the system be used?
- Speed of response
- Batch processing
- Interactive systems
- Communicating between stock infomration
- Existing Systems
- Network needs to be compatible with existing system
- Servers, PCs
- Communications
- Custom written software
- Job familarity for employees
- Can the old system be used as the new one is being integrated?
- Using part of the existing system will save money
- Network needs to be compatible with existing system
- Performance Required
- Network needs to be fast, usable and reliable
- Don't always need the best system, just one that works for you
- Software needs to be well tested
- How will the users be able to get the most out of the system?
- Security Issues
- Most organisations need to keep their data secure
- Virus software needs to be updated and constantly running
- Allow different kinds of access to the system
- Why have a network? (In comparison to stand alone computers)
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