Exam 200-301 topic 1 question 920 discussion

Unique local addresses are NOT assigned by an organization. https://en.wikipedia.org/wiki/Unique_local_address A unique local address (ULA) is an Internet Protocol version 6 (IPv6) address in the address range fc00::/7.[1] Its purpose in IPv6 is somewhat analogous to IPv4 private network addressing, but with significant differences. Unique local addresses may be used freely, without centralized registration, inside a single site or organization or spanning a limited number of sites or organizations. They are routable only within the scope of such private networks, but not in the global IPv6 Internet.

1 is globally routable and the other is unique to the organization. One comes from the ISP and the other is generated privately. Both use the same subnet. /64, /128. etc.

Global IPv6 addresses are routable on the global internet and have a prefix of 2000::/3. Unique local IPv6 addresses (ULAs) are not routable on the global internet and have a prefix of FC00::/7. They are used for local communication within a site or organization. Both global and unique local IPv6 addresses use the same subnetting process since IPv6 allows for flexible subnetting with a fixed prefix length (typically /64 for the network portion). B: Incorrect because only some IPv6 addresses are multicast addresses (those starting with FF00::/8). C: Incorrect since ULAs are not globally routable. D: Incorrect because global IPv6 addresses are allocated by global organizations (like IANA), while ULAs are self-allocated within organizations.

D. They are allocated by the same organization. This is incorrect because GUAs are allocated by regional internet registries (RIRs), while ULAs are self-assigned and generated locally without requiring a central authority

A is correct

"Allocation" is term used when a RIR/LIR/ISP assigs a block of IPv4/IPv6 addresses to and end user. Unique local ARE NOT allocated. Anyone can use them, they're defined in an RFC. "Allocated" is a key word in this question.

I think A is correct.

Correct answer is A

They are NOT allocated by the same organization.

Peter_panda explained it perfect - the answer is A just to raise the % for A !!!

Peter_panda explained it perfect - the answer is A

D is wrong in global unicast first 3 hextets are allocated via ISP, not like unique local. the answer is A, both use the 4th hextet for subnetting.

The correct answer it's D for me

Yeah, looks like "D" is the correct answer.

Think D is maybe the better answer