Choosing the IPv6 global-unicast range | LinuC Level 1 102 Exam original practice question

1.07.1Basic

Classify IPv6 address types by prefix.

Choose the range reserved for ordinary global unicast.

Which prefix is global unicast?

Hint 1: Focus on protocol roles

Separate reliable transport, datagram transport, IP control messages, and name resolution before comparing the choices.

Hint 2: Key terms

Review the short definitions of transport protocols, control messages, and name resolution involved.

IPv6 global unicast: The 2000::/3 range used for routed public IPv6 addresses.
Unique local: The fc00::/7 range used inside organizations.
Link-local: The fe80::/10 range restricted to one link.
Loopback: The single ::1/128 address representing the local host.

Detailed explanation

Incorrect::1/128

Incorrect. ::1/128 is loopback.

Incorrectfc00::/7

Incorrect. fc00::/7 is unique-local unicast.

Incorrectfe80::/10

Incorrect. fe80::/10 is link-local unicast.

Correct2000::/3

Correct. 2000::/3 is the global-unicast range.

An example you can run in a temporary verification environment.

python3 -c "import ipaddress; print(ipaddress.ip_address('2001:db8::1') in ipaddress.ip_network('2000::/3'))"

True

Foundation review

The part of an IP address that identifies the network rather than a host.

TCP and UDP provide different delivery, reliability, and connection semantics.

A numbered endpoint used to deliver traffic to a network service.

Question IDKL-102-960

EnvironmentPython 3 ipaddress / 外部通信なし

Last technical review2026-08-13

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