Question

item 20 (4 points) what is incorrect about these ipv6 addresses? ip address = error 3f10:4035::139c:192 choose 4901:123c::f05f::42 contains a \g\; hex is only a - f contains two sets of double colons only 6 hextets 2600:443fa::19cb:31 contains 5 digits and characters; there are only 4 in each hextet 2600:ca54:d13a:2b01 choose

Explanation:

1. For the address 3F10:4035::139C:192, the error is that it contains two sets of double - colons. In IPv6, only one set of double - colons (::) is allowed to represent consecutive zero groups to avoid ambiguity.
2. For the address 4901:123C::F05F:422, if it contains a "G", it is incorrect because hexadecimal values in IPv6 addresses are only from A - F (or a - f in lower case).
3. For the address 2600:443FA::19CB:31, each hextet in an IPv6 address should have 4 digits or characters. Here, "443FA" has 5, which is incorrect.
4. The address 2600:ca54:d13a:2b01 seems to be a valid IPv6 address as it follows the correct format with 8 hextets, each having 4 hexadecimal digits/characters and no incorrect special cases.

Answer:

3F10:4035::139C:192: Contains two sets of double colons
4901:123C::F05F:422: Contains a "G"; HEX is only A - F
2600:443FA::19CB:31: Contains 5 digits and characters; there are only 4 in each HEXTET
2600:ca54:d13a:2b01: No error