O-LevelComputer ScienceThe Internet and its uses2210/12 · May/June 2023 · Q85 Marks
A computer is connected to a network and assigned an IPv4 address.
- (a)Tick (✔) one box to show which device would assign the IPv4 address to the computer. A Domain name server (DNS) B Network interface card (NIC) C Router D Web server[1]
- (b)Describe the characteristics of an IPv4 address.[4]
Mark scheme
Marking points from the official mark scheme (May/June 2023). The mark or mark type is shown in brackets.
- [1] C
- [1] It is denary based
- [1] ... with numbers between 0 and 255
- [1] It is 32 bits
- [1] 4 sets/groups of numbers
- [1] ... separated by dots
- [1] It is a unique address
- [1] It can be static or dynamic
- [1] It can be public or private
- [1] It contains the network prefix
- [1] ... and the host number
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