Maisey purchases a new router and attaches it to her computer. The connection she sets up uses duplex data transmission.

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2019). The mark or mark type is shown in brackets.

1. [1] (a) Duplex data transmission can be either serial or parallel: True
2. [1] (a) Duplex data transmission is when data is transmitted both ways, but only one way at a time: False
3. [1] (a) Duplex data transmission is always used to connect a device to a computer: False
4. [1] (a) Duplex data transmission is when data is transmitted both ways at the same time: True
5. [1] (a) Duplex data transmission automatically detects any errors in data: False
6. [1] (b) Parallel data transmission
7. [1] (c) It is a universal standard
8. [1] (c) ... so it is likely to be compatible with the computer
9. [1] (c) It can only be inserted one way
10. [1] (c) ... so there is less chance of connecting a device incorrectly
11. [1] (c) It is a high-speed connection
12. [1] (c) ... so data will be transmitted quicker
13. [1] (c) It uses serial transmission
14. [1] (c) ... so it is cheaper to manufacture/buy
15. [1] (c) ... less chance of skewing / errors
16. [1] (c) It doesn't require a (wireless) network
17. [1] (c) ... therefore, can be used if a network is down
18. [1] (c) It is backwards compatible
19. [1] (c) ... so no additional technology is needed
20. [1] (c) It can power the device
21. [1] (c) ... therefore no separate source of power is needed
22. [1] (c) Drivers are automatically downloaded // device is automatically identified
23. [1] (c) ... so no need to find them online / install them manually