200-150 · Question #18
Which two options are multicast addresses? (Choose two.)
The correct answer is C. FF05::2 D. 226.10.10.10. Multicast addresses occupy specific reserved ranges: FF00::/8 for IPv6 and 224.0.0.0/4 for IPv4.
Question
Which two options are multicast addresses? (Choose two.)
Options
- AFD00::2
- B192.168.2.2
- CFF05::2
- D226.10.10.10
- E240.1.0.1
How the community answered
(54 responses)- A2% (1)
- B2% (1)
- C93% (50)
- E4% (2)
Why each option
Multicast addresses occupy specific reserved ranges: FF00::/8 for IPv6 and 224.0.0.0/4 for IPv4.
FD00::2 is an IPv6 Unique Local Address (ULA) in the FC00::/7 range, used for private unicast routing, not multicast.
192.168.2.2 is a private IPv4 unicast address in the RFC 1918 space (192.168.0.0/16), not a multicast address.
FF05::2 is an IPv6 multicast address - all IPv6 multicast addresses begin with the FF prefix (FF00::/8), and FF05::2 is a site-local scoped multicast address used for router discovery.
226.10.10.10 falls within the IPv4 multicast range of 224.0.0.0 to 239.255.255.255 (224.0.0.0/4), making it a valid Class D multicast address.
240.1.0.1 falls in the 240.0.0.0/4 range, which IANA reserves for future use - the IPv4 multicast range ends at 239.255.255.255.
Concept tested: IPv4 and IPv6 multicast address ranges
Source: https://www.iana.org/assignments/multicast-addresses/multicast-addresses.xhtml
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