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Unit 3-Networks - Coggle Diagram
Unit 3-Networks
Networking Requirements & Activity
A Network Interface Card (NIC) is required, whether it be a physical one or for a wi-fi network, to connect a computer to a network.
Connectivity is the process of connecting the parts of a network to allow data transfer.
Without connectivity, data could not be easily exchanged between computers without the use of removable storage.
Wired connections use a wired connection protocol e.g. Cat6 cabling using Ethernet.
Wireless does not use cabling but requires both the transmitting and receiving machine to have wireless network adapter cards and normally additional wireless routing equipment is required.
Wireless is generally slower than wired in terms of bitrate although the advantage of greater freedom can offset this
A network is a number of computer systems connected together
Advantages
Share peripherals
Share software
Share data/files
Easier for internal communictaion
Centralised backup
Easier to monitor
Can access data from any computer
Can access network from from central location
Disadvantages
A network manager may need to be employed – expensive
Security problems – files sent between computers could spread a virus
Hackers can gain access to data more easily
If the server is down, all workstations on the network are affected
Initial cost of servers, communication devices, etc. can be expensive
LAN and WAN