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Keywords

• Byte
• USB
• Client side processing (advantage/disadvantage)
• server side processing (advantage/disadvantage)
• BI-directional transmission
• Packet switching (advantage/disadvantage)
• Simplex
• Half duplex
• Full duplex

Byte

• In computing and telecommunications, a byte is unit of digital information which commonly consists of eight bits.

USB

• A higher speed serial connection standard that supports low-speed devices (e.g. mice, keyboards, scanners) and higher-speed devices (e.g. digital cameras).

Client side processing

• When the interaction between a web page and code occurs directly on a user’s computer.
• Advantage- faster because the data is on the client and does not need to move across the internet
• Disadvantage- the web page owner is reliant on the processor speed of the clients computer,so if that is slow then the processing will be slow

Server side processing

• When the interaction between a web page and a computer processed through a server.
• Advantage- the information to process does not need to be downloaded to the clients computer
• Disadvantage- when data is transferred across the internet it is more at risk of security threats

Bi-directional transmission

• Bi-directional transmission has several meanings within data communication, but it is essentially about transmitting in both directions. Most recently the term has been applied to fibre optics. Using the current technology, light passes in one direction only, so you have to add extra fibre to the bundle to carry a signal in the opposite direction.

Packet Switching

• A mode of data transmission in which a message is broken into a number of parts which are sent independently, over whatever route is optimum for each packet, and reassembled at the destination.

Simplex

• Sends data in one direction only. A radio broadcast is a good
• example of simplex transmission.

Half Duplex

• allows two-way transmissions but the devices don’t transmitat the same time. A system being used to monitor and control manufacturing processes can use half-duplex transmissions. It will send a message to the control computer,which will respond with new settings, but they both cannot send messages at thesame time. Some network systems use half-duplex to maximise bandwidth.

Full Duplex

• Allows two-way communication at the same time.The telephone system, land or mobile, is an example of a full duplex system.