Cisco
300-365 · Question #102
300-365 Question #102: Real Exam Question with Answer & Explanation
The correct answer is B: 224.0.0.2. The question asks which well-known multicast address is used to reach all multicast routers on a local network segment.
Wireless Deployment
Question
An engineer is attempting to send multicast data to all multicast routers in the network with ID 338789750. Which IP address should be used?
Options
- A224.0.0.1
- B224.0.0.2
- C224.0.0.4
- D224.0.0.3
Explanation
The question asks which well-known multicast address is used to reach all multicast routers on a local network segment.
Common mistakes.
- A. 224.0.0.1 is the 'All Hosts' address that targets all multicast-capable hosts on the subnet, not specifically routers.
- C. 224.0.0.4 is reserved for DVMRP (Distance Vector Multicast Routing Protocol) routers only, not all multicast routers.
- D. 224.0.0.3 is currently unassigned by IANA and has no defined multicast group function.
Concept tested. Well-known IPv4 link-local multicast group addresses
Reference. https://www.iana.org/assignments/multicast-addresses/multicast-addresses.xhtml
Topics
#multicast#well-known multicast addresses#IGMP#IP addressing
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