Cisco
200-150 · Question #46
200-150 Question #46: Real Exam Question with Answer & Explanation
The correct answer is B: broadcast. IPv4 supports broadcast addressing, but IPv6 eliminates broadcast entirely and replaces its functions with multicast.
Question
Which address type is used in IPv4 but is not used in IPv6?
Options
- Amulticast
- Bbroadcast
- Canycast
- Dunicast
Explanation
IPv4 supports broadcast addressing, but IPv6 eliminates broadcast entirely and replaces its functions with multicast.
Common mistakes.
- A. Multicast is supported in both IPv4 and IPv6; IPv6 actually expands multicast use to replace broadcast functionality.
- C. Anycast is supported in both IPv4 and IPv6, though it is more formally defined and widely used in IPv6.
- D. Unicast is a fundamental address type used in both IPv4 and IPv6 for one-to-one communication.
Concept tested. IPv6 elimination of broadcast addressing
Reference. https://www.rfc-editor.org/rfc/rfc4291
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