Key words (Byte, USB, ETC)

Keywords

• Byte
• USB
• Client Side Processing (Advantages and Disadvantages)
• Server side (Advantages and Disadvantages)
• Bi-direction transmission
• Packet switching (Advantages and Disadvantages)
• Simplex
• Half duplex
• Full duplex

Byte

• In computing and telecommunications, a byte is unit of digital information which commonly consists of eight bits.
• https://www.youtube.com/watch?v=UmSelKbP4sc (Embed)

USB

• Nowadays USB is used in a wide variety of devices, such as mobile telephones, memory sticks and MP3 players. USB ports also supply power to some devices. The maximum theoretical transmission rate for USB 2.0 is 480 Mbps, but this is shared among all devices on a USB hub, so the rate for each device will be less than this.
• https://www.youtube.com/watch?v=IOrcT_4ohXM (Embed)

Client Side Processing

• Advantages
• Allow for more interactivity by immediately responding to users' actions
• Execute quickly because they don't require a trip to the server
• Disadvantages
• Not all browsers support scripts, therefore, users might experience errors if no alternatives have been provided
• Different browsers and browser versions support scripts differently, thus more quality assurance testing is required
• https://www.youtube.com/watch?v=DcBB2Fp8WNI (Embed)

Server Side Processing

• Advantages
• The information doesn't need to be downloaded to to the client's computer
• It doesn't matter which browser the user has, the work is done separately.
• Disadvantages
• When the data is transferred across the internet it is at more risk of security threats.
• If lots of people are asking the web server to process data, it could overload the server and cause it to crash.
• https://www.youtube.com/watch?v=nhZMH8oX6xI (Embed)

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 fibres to the bundle to carry a signal in the opposite direction.
• https://www.youtube.com/watch?v=4Hp9hwgz5OQ (Embed)

Packet Switching

• Packet switching is a digital networking communications method that groups all transmitted data into suitably sized blocks, called packets, which are transmitted via a medium that may be shared by multiple simultaneous communication sessions.
• https://www.youtube.com/watch?v=dtpvGmQTXTA (Embed)

Simplex

• Simplex transmission sends data in one direction only. A radio broadcast is a good example of simplex transmission.
• https://www.youtube.com/watch?v=-pd-OwNCAMo (Embed)

Half Duplex

• https://www.youtube.com/watch?v=9-Vpq3fcmHA (Embed)
• Half duplex transmission allows two-way transmissions but the devices don’t transmit at 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 the same time. Some network systems use half-duplex to maximise bandwidth.

Full Duplex

• https://www.youtube.com/watch?v=9-Vpq3fcmHA (Embed)
• Full duplex transmission: allows two-way communication at the same time. The telephone system, land or mobile, is an example of a full duplex system.