| Exam 200-120 | Question id=113 | IPv4/IPv6 Addressing |
Which statements describe characteristics of IPv6 unicast addressing?
| A. |
Global addresses start with 2000::/3. | |
| B. |
Link-local addresses start with FE00:/12. | |
| C. |
Link-local addresses start with FF00::/10. | |
| D. |
There is only one loopback address and it is ::1. | |
| E. |
If a global address is assigned to an interface, then that is the only allowable address for the interface. |
http://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml
2000::/3 Global Unicast The IPv6 Unicast space encompasses the entire IPv6 address range with the exception of ff00::/8, per [RFC4291]. IANA unicast address assignments are currently limited to the IPv6 unicast address range of 2000::/3
The IPv6 address reserved for loopback use is 0000:0000:0000:0000:0000:0000:0000:0001/128. This loopback address is so lengthy and can be further simplified as ::1/128.