Edexcel GCSE Computer Science (1CP2) Exam Questions

• C It keeps the car at a constant speed (1)
• The only correct answer is C. The correct answer is it keeps the car at a constant speed.
• A is not correct because controlling the interior lights is done by a different embedded system in the car
• B is not correct because displaying a map for the driver is done by the satellite navigation system
• D is not correct because sounding an alarm is done by a different embedded system in the car

Award one mark for any of the following up to a maximum of two marks:

• Microwave (oven) (1)
• Washing machine (1)
• Dishwasher (1)
• Digital camera (1)
• Satellite navigation/satnav system (1)
• Traffic light(s) (1)
• Central heating controller/thermostat (1)
• Digital watch/fitness tracker (1)
• Vending machine (1)
• Car (as it contains embedded systems) (1)

Allow any other device that contains an embedded system.

Do not accept general purpose devices such as a laptop, desktop computer, tablet or smartphone (these can run many different programs).

Award up to two marks for a linked description such as:

• Makes a copy/duplicate of the files/data (1) and stores it on a separate storage device/at a different location (1)
• Copies the data at regular intervals (1) so a recent version is available if the original is lost (1)
• Keeps a copy of the files (1) so that the data can be restored after the original is deleted/corrupted (1)
• Stores the copies on another device (1) so the data is not lost if the original device fails/is damaged by a fire or flood (1)

Do not accept 'it backs up the files' on its own, as this repeats the question.

Do not accept responses about repairing corrupted files or removing malware, as these are different utility programs.

Award up to two marks for a linked explanation such as:

• Data can avoid a busy/congested link (1) because the router can choose another path (1)
• Data can still arrive if a link fails (1) because the router sends it another way (1)
• Data can take the shortest/fastest path (1) because the router compares the routes and chooses the one with the fewest hops/least traffic (1)

For both marks, the expansion must follow/associate with the statement.

Allow other valid benefits with a linked reason, e.g. traffic can be shared across routes/load balanced (1) because the router can send some packets by another path (1)

Do not accept 'the route is always the same' as this is not a benefit of choosing a route.

Do not accept 'routers are fast' or 'packets are sent faster' on its own: the reason must say how the route is chosen, e.g. avoiding congestion or using a routing table.