Boson Practice Exam

Which IPv6 prefix is globally routable?

2000::/3 FE80::/10 FC00::/8 FF02::/16

Correct Answer:

2000::/3

Explanation:

IPv6 addresses have different scopes, and which ones can be routed globally depends on that scope. Global unicast addresses are intended to be reachable on the public Internet, and their assigned prefix is 2000::/3. This range is specifically designated for globally routable addresses, covering addresses that can be routed across providers and networks worldwide. In contrast, FE80::/10 are link-local addresses that stay on the local network segment and aren’t forwarded by routers; FC00::/7 (private use) are unique local addresses meant for private networks and aren’t globally routable; FF02::/16 are multicast addresses used for one-to-many delivery, not unicast routing. So the prefix that makes an IPv6 address globally routable is 2000::/3.

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