Quick Answer
The correct answer is multicast. IPv6 multicast addresses, identified by the FF00::/8 prefix, are specifically designed for one-to-many communication, where a single packet sent from one source is delivered to multiple interfaces that have joined the same multicast group. This directly mirrors the behavior of IPv4 multicast addresses (224.0.0.0/4), making it the exact address type for this scenario. On the CompTIA Network+ N10-009 exam, you may be asked to distinguish multicast from unicast (one-to-one) or anycast (one-to-nearest), so a common trap is confusing anycast with multicast since both involve multiple destinations. Remember that multicast uses the FF00::/8 range and is the only IPv6 address type that supports efficient one-to-many distribution, similar to a radio broadcast. A quick memory tip: think “FF” for “Far-reaching Flood” to recall that multicast sends to many.
This N10-009 practice question tests your understanding of networking concepts. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which IPv6 address type is used for one-to-many communication and is similar to an IPv4 multicast address?
Multicast
Multicast delivers packets to all interested nodes in a group, analogous to IPv4 multicast.
Anycast
Why wrong: Anycast delivers to the nearest node in a group, not to all members.
Unicast
Why wrong: Unicast is one-to-one communication, not one-to-many.
Broadcast
Why wrong: IPv6 does not have broadcast addresses; multicast is used instead.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Multicast
IPv6 multicast addresses (FF00::/8) are designed for one-to-many communication, where a single packet is delivered to multiple interfaces that have joined the multicast group. This directly parallels the behavior of IPv4 multicast addresses (224.0.0.0/4), making option A correct.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Multicast
Why this is correct
Multicast delivers packets to all interested nodes in a group, analogous to IPv4 multicast.
Related concept
Read the scenario before looking for a memorised answer.
Anycast
Why it's wrong here
Anycast delivers to the nearest node in a group, not to all members.
Unicast
Why it's wrong here
Unicast is one-to-one communication, not one-to-many.
Broadcast
Why it's wrong here
IPv6 does not have broadcast addresses; multicast is used instead.
Common exam traps
The trap here is that candidates confuse anycast with multicast because both involve groups of interfaces, but anycast delivers to only one member (the nearest), while multicast delivers to all members.
Detailed technical explanation
IPv6 multicast uses a 4-bit flag field (e.g., transient vs. well-known) and a 4-bit scope field (e.g., interface-local, link-local, global) within the prefix FF00::/8. For example, solicited-node multicast (FF02::1:FFxx:xxxx) is used for Neighbor Discovery Protocol (NDP) to avoid the broadcast storms seen in IPv4 ARP. In real-world networks, multicast is critical for protocols like OSPFv3 (FF02::5 for all OSPF routers) and DHCPv6 (FF02::1:2 for all DHCPv6 servers).
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A network engineer segments a warehouse floor into three subnets: 20 scanners, 5 printers, and 2 management hosts. Picking the wrong mask wastes addresses or leaves too few usable hosts. Exam questions test whether you can apply CIDR notation, calculate block size, and identify the correct usable-host range for a given prefix.
What to study next
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FAQ
Networking Concepts — This question tests Networking Concepts — Read the scenario before looking for a memorised answer..
The correct answer is: Multicast — IPv6 multicast addresses (FF00::/8) are designed for one-to-many communication, where a single packet is delivered to multiple interfaces that have joined the multicast group. This directly parallels the behavior of IPv4 multicast addresses (224.0.0.0/4), making option A correct.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This N10-009 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the N10-009 exam.
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