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Which IPv6 address type is automatically created on an interface and used for local-link communication?

Question 1easymultiple choice
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Which IPv6 address type is automatically created on an interface and used for local-link communication?

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Answer choices

Why each option matters

Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.

A

Distractor review

Unique local

Unique local addresses are not automatically the local-link-only address being tested here.

B

Distractor review

Global unicast

Global unicast addresses are routable beyond the local link.

C

Best answer

Link-local

Correct. Link-local addresses are auto-created and used locally.

D

Distractor review

Anycast

Anycast is an addressing behavior, not the specific auto-created local type.

Common exam trap

Common exam trap: answer the scenario, not the keyword

Read the requirement carefully. Cisco often uses subtle wording like 'most efficient' or 'industry standard' to eliminate technically correct but non-optimal answers.

Technical deep dive

How to think about this question

Treat this as a scenario question. Identify the problem, the constraint, and the best action. Then compare each option against those facts.

KKey Concepts to Remember

  • IPv6 link-local addresses are automatically generated on all IPv6-enabled interfaces using the FE80::/10 prefix for local-link communication.
  • Link-local addresses enable essential IPv6 functions like neighbor discovery and routing protocol operations within the local network segment.
  • Unique local IPv6 addresses are manually assigned and used for private addressing within an organization but are not automatically created on interfaces.
  • Global unicast IPv6 addresses are globally routable and require manual or DHCPv6 configuration, unlike link-local addresses.
  • Routing protocols such as OSPFv3 and EIGRP for IPv6 use link-local addresses as next-hop addresses for local communication between routers.
  • Link-local addresses cannot be routed beyond the local link and are confined to communication within the same network segment.
  • IPv6 interfaces always have at least one link-local address, ensuring basic IPv6 functionality even without other address configurations.
  • Exam questions often test the distinction between automatically assigned link-local addresses and manually assigned unique local or global unicast addresses.

TExam Day Tips

  • Watch for words such as best, first, most likely and least administrative effort.
  • Review why wrong options are wrong, not only why the correct option is correct.

Related practice questions

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More questions from this exam

Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.

Question 1

A router learns the same prefix from both OSPF and EIGRP. Which route is installed by default?

Question 2

A router shows this output: R1#show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 10.1.1.2 1 FULL/DR 00:00:34 192.168.12.2 GigabitEthernet0/0 10.1.1.3 1 2WAY/DROTHER 00:00:39 192.168.12.3 GigabitEthernet0/0 Which statement is correct?

Question 3

What is the OSPF metric called?

Question 4

A non-root switch has two uplinks toward the root bridge. One path has a lower total STP cost than the other. What role will the lower-cost uplink have?

Question 5

A router interface applies this ACL inbound: 10 deny tcp any any eq 80 20 permit ip any any A user reports that web browsing to a server by IP address fails, but ping works. Which statement best explains the behavior?

Question 6

A router learns route 198.51.100.0/24 from OSPF with AD 110 and also has a static route to the same prefix configured with AD 150. Which route is installed?

FAQ

Questions learners often ask

What does this 200-301 question test?

IPv6 link-local addresses are automatically generated on all IPv6-enabled interfaces using the FE80::/10 prefix for local-link communication.

What is the correct answer to this question?

The correct answer is: Link-local — IPv6 interfaces automatically generate a link-local address in FE80::/10 for local-segment functions such as neighbor discovery.

What should I do if I get this 200-301 question wrong?

Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.

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