O-LevelComputer ScienceData Transmission2210/11 · May/June 2016 · Q410 Marks

Nikita wishes to print out some documents and connects her printer to the computer using one of the USB ports.

(a)(i)Identify what type of data transmission is being used.[1]
(a)(ii)Give three reasons for using a USB port.[3]
(a)(iii)The printer runs out of paper while it is printing the documents. A signal is sent to the processor to request that the problem is dealt with. Name this type of signal.[1]
(b)State one suitable application for each printer below. A different application must be given for each printer. Inkjet printer 3D printer[2]
(c)Name another type of printer and describe one way in which it is different from the printers named in part (b). Give an application for this printer. Type of printer Description Application[3]

Mark scheme

Marking points from the official mark scheme (May/June 2016). The mark or mark type is shown in brackets.

[1] (a)(i) serial
[1] (a)(ii) automatically detects the hardware/installs drivers
[1] (a)(ii) plug only goes in one way/can't connect incorrectly
[1] (a)(ii) supports different data transmission speeds/a range of data transmission speeds
[1] (a)(ii) has become the industry standard/universally used
[1] (a)(ii) backwards compatible (with earlier versions of USB ports)
[1] (a)(iii) interrupt
[1] (b) inkjet printer: (small quantities of) documents / photographs
[1] (b) 3D printer: (physical) prototype (from CAD) / (physical) model (from a blueprint)
[1] (c) Laser printer
[1] (c) uses toner/powder ink
[1] (c) uses (positive and negative) charged drums // rotating drum
[1] (c) uses static charge
[1] (c) no moving head
[1] (c) faster at printing
[1] (c) high volume output/high speed
[1] (c) producing flyers/leaflets/magazines

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