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CCNA practice question: Network Fundamentals

Network FundamentalsDifficulty 3/5

Which IPv6 address type is automatically configured on every IPv6-enabled interface and is required for neighbor discovery?

  1. ALink-local fe80::/10
  2. BMulticast ff02::1
  3. CGlobal unicast 2001::/16
  4. DUnique local fc00::/7
Show answer and rationale

Correct: A. Every IPv6 interface derives a link-local address in fe80::/10 (typically via EUI-64 or a random ID). Neighbor Discovery and routing protocol hellos use link-local addresses; they are never routed off the link.

  • C — Global addresses are optional and assigned by SLAAC/DHCPv6/manual config.
  • D — Unique local addresses are optional private addresses.
  • B — ff02::1 is the all-nodes multicast group, not an interface address.

Concept being tested

Network components, topologies, cabling and interface issues, TCP vs UDP, IPv4 addressing and subnetting, IPv6 addressing and types, wireless principles, virtualization, switching concepts. — 20% of the exam. Study guide for Network Fundamentals.

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Primary references

  1. CCNA Exam v1.1 (200-301) Exam Topics — Cisco Systems · primary · retrieved 2026-09-21, verified 2026-09-21
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