Flashcards
A2 ICT Topic 1-Networks
Flashcards do conjunto (20)
- 1Cost of the network1. Cost of staff
2. Maintenance costs
3. Hardware / Software
4. Training - 2Factors of a Network1. Cost of the network
2. Size of the company
3. How the system will be used
4. Existing systems
5. Performance Required - 3Size of the company1. LAN / WAN
2. Security measures
3. Satellite link may be needed - 4How the system will be usedDepends on the applications the users require..
Work from home using video conferences etc. - 5Existing systemsAny new network must work with existing operating systems and protocols.
- 6Performance required1. Speed of processing
2. Capacity
3. Usability
4. Reliability - 7Security issues that need to be considered when choosing a network1. Access to illicit material
2.. Keeping hackers out
3. Protecting payment details
4. Avoiding viruses - 8Peer to peer networks1. Each computer has the same status
2. Each computer can access all of the resources in the network
3. Used for home networks, sharing files and printers - 9Advantages and disadvantages of peer to peerAdv: Cost saving as no need for a server.
No network manager needed.
Easy to set up.
Disadv: No central backup.
Users need more IT knowledge.
Poor security as resources are shared. - 10Client server networks1. Not all computers have the same status
2. Better for large networks.
3. Has a more powerful central computer where all files are stored. - 11Advantages and disadvantages of a Client ServerAdv: Better security.
Centralised data.
Backups are taken centrally.
Disadv: Servers are expensive.
Need a technician in charge of the network.
If the server breaks down, the network is unusable. - 12Advantages of a ring topologyAdv: Network isn't dependent on a central computer.
Higher transmission speeds.
No collisions. - 13Disadvantages of a ring topologyDisadv: A break in the connection means the whole network fails.
Faults are difficult to locate.
Can't keep the network running if hardware is being added. - 14Advantages of a bus topologyAdv: Inexpensive as small amount of cable needed.
Simple cables make it easy to install.
Easy to add extra devices to the network. - 15Disadvantages of a bus topologyDisadv: If more than 12 devices are added, the performance is degraded.
If there is a break in the backbone cable, the network won't work.. - 16Advantages of a star topologyAdv: If a cable breaks, then the other computers can still be used.
Extra computers can be added without loss of performance.
Can easily add extra computers without disturbing the network. - 17Disadvantages of a star topologyDisadv: Large amount of cables makes it expensive.
Dependent on the central hub. - 18Tasks using remote management1. Setting times for virus scanning.
2. Guide users through problems.
3. Log off users who are still logged on.
4. Clear printer queues.
5. Update and install software.
6. Shut down computers. - 19User accounts and logs1. Who - who accessed the system based on their username
2. What - details of files accessed while logged on
3. When - what time they logged on and off - 20—
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- A2 ICT (Topic 1) FlashCards sobre A2 ICT Topic 1-Networks, criado por jadeamber68 em 08-01-2016.
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- jadeamber68
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