In IPv6, what does the Site-Level Aggregator identify?

A.
Individual locations.

B.
Backbone providers.

C.
Server location

D.
ISPs.

Explanation:
An ISP can be identified by either a Site-Level Aggregator (SLA ID) or a Next-Level Aggregator
(NLA ID). In the NLA, which is a Network Service Provider or ISP (Tier 2), so an ISP can fall if they
support downstream service providers. An ISP can be a Site-Level Aggregator if it has
downstream customers which are not service providers. The difference between a SLA and NLA
depends on whether the address space is delegated.
Incorrect Answers:
A: The are identified by the Interface ID.
B: Internet Backbone Providers are identified by the Top Level Aggregator (TLA ID), and is
considered Tier 1.
C: The are identified by the Interface ID.