Every device that connects to the internet is given an IP address.
Identify the number of bits in an IPv4 address.
Mark scheme
- C 32 (1)
- The only correct answer is C. The correct answer is 32.
- A is not correct because 4 is the number of groups of numbers in an IPv4 address
- B is not correct because 8 is the number of bits in each group of an IPv4 address
- D is not correct because 128 is the number of bits in an IPv6 address
Example answers and how they were marked
Full marks1/1
C 32
Why: Correct option (1): an IPv4 address is 32 bits long.
No marks0/1
B 8
Why: 8 is the number of bits in one group of an IPv4 address, not the whole address (mark scheme line B), so no mark.
No marks0/1
D 128
Why: 128 is the length of an IPv6 address, not an IPv4 address (mark scheme line D), so no mark.