O-LevelComputer ScienceHardware2210/11 · May/June 2020 · Q88 Marks

Benny is a photographer and prints his photos using an inkjet printer.

(a)Benny is printing some photos and the paper gets jammed in the printer. A signal is sent to alert the computer about the paper jam. State the name of this type of signal.[1]
(b)Identify one benefit and two drawbacks of Benny using an inkjet printer, instead of a laser printer, to print his photos. Benefit Drawback 1 Drawback 2[3]
(c)Four statements are given about printers. Tick (✔) to show whether the statement applies to an Inkjet printer or a Laser printer. Statement Inkjet (✔) Laser (✔) Uses a rotating drum to transfer the image to the paper Uses powdered toner Uses nozzles to spray droplets on to the paper Uses a print head mechanism that moves side to side [4]

Mark scheme

Marking points from the official mark scheme (May/June 2020). The mark or mark type is shown in brackets.

[1] 8(a) Interrupt
[3] 8(b) One mark for benefit, two marks for drawbacks Benefit: Printing may be higher quality; Can use larger paper sizes; Can print onto different media; No warm-up time Drawbacks: Printing will be slower; Ink is more expensive per page; Ink can be smeared // ink is not smudge proof
[4] 8(c) (Table with ticks: Rotating drum - Laser; Powdered toner - Laser; Spray droplets - Inkjet; Print head mechanism - Inkjet) One mark per each correct row.

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