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NIC (network Interface Card)
Allows data packets to travel back and fourth between the computer and network 48-bit identification, called a MAC (Media Access Control) address
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Router
Joins several wired and wireless computer networks together. Data is transferred in the most efficient route. The router will check if packets received were sent to the right address
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HUB
Joins computer devices in a network so they are able to share files and an internet connection. Shares data by going back and fourth.
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Hardware
Hardware are computer components that can be physically touched, like RAM
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Software
Components of the computer you cannot physically touch, like applications
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Embedded Systems
Combination of hardware and software. An example of embedded systems are sat navs, in modern cars
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Mainframe
Massive machine used to solve scientific and engineering problems that are complex. Can also manipulate, collect and store large amounts of data
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Internet of Things
Allows smart devices to communicate. An example of this is unlocking a car without having to be in close proximity
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TP (Twisted Pair)
Very common used in telephone systems. A pair of insulated wires twisted together. Multiple twisted pairs together can be brought together to make a twisted cable
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STP (Shielded Twisted Pair)
Combines shielding and cancellation and wire twisting. Each twisted pair in a metallic foil and four parts of wires are wrapped in another metallic braid jacket
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UTP (Unshielded Twisted Pair)
Two unshielded twisted wires around each other, cased in metallic foil. Used in majority of homes, offices and some large scale businesses. CATs ethernet cable is a UTP. Used to connect computing devices
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Fibre Cables
Optical Fibres provides the fastest delivery of data by each cable. Fibres are no thicker than a human hair. The thinner, the better.
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Metal Cable (Coaxial)
Consists of a solid copper core surrounded by a copper shielding. Coaxial cables are widely used for television wiring, has enough bandwidth to handle a television signal.
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Bandwidth
The maximum rate of data transfer across a path
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Switch
Similar to a HUB but smarter. This device connects network devices and manages data traffic. Receives packets, processes them to a specific device.
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Modem
Converts analogue signals from a telephone or cable wire to a digital data, so computers can understand it. Known as demodulation. Also converts digital data to analogue signals. Known as modulation.
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Bridge
Joins two computer networks together, making one larger network. Both networks have to have the same protocols for this to occur. Signals will fade as they travel. Repeaters will boost signals back to its correct level.
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Communication Hardware
For computer on a network, communication is required. Transmits analogue or digital signals over wired or wireless channels, as well as being used to connect multiple devices together.
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Open Source
View and edit software. Can debug, improve and modify the code
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Closed source
Closely guarded, you cannot edit the code and is protected by intellectual property rights and copyright laws. You can buy and use it but don't own it
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Bespoke
Produced for a specific requirement it is expensive as you have to commission a development team to produce to your needs, takes a long time to make
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Off the Shelf
General purpose, purchased relatively cheap. You can only really make cosmetic changes
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MIS (Management Information Systems)
Summarises, collects, graphs and charts data. Can identify trends.
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WAP (Wireless Access Point)
A linking device that connects devices to a cabled network. Any device with Wi-Fi built into it, will search for a WAP, in order to connect to a network
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Units of measurement
Bit-Nibble-Byte-Kilobyte-Megabyte-Gigabyte-Terabyte-Petabyte
Kilobyte= 1000 Bytes Kibibytes = 1024 Bytes
Megabytes=1000 Kilobyte Mebibytes=1024 Kibibytes etc.
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Binary
0's and 1's (Base 2)
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Denary
0-9 (Base 10)
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Hexidecimal
0-9 and A-F (Base 16)
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Other cards in this set

Card 2

Front

Router

Back

Joins several wired and wireless computer networks together. Data is transferred in the most efficient route. The router will check if packets received were sent to the right address

Card 3

Front

HUB

Back

Preview of the front of card 3

Card 4

Front

Hardware

Back

Preview of the front of card 4

Card 5

Front

Software

Back

Preview of the front of card 5
View more cards

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