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200-150 · Question #120
200-150 Question #120: Real Exam Question with Answer & Explanation
The correct answer is A: 224.1.47.5. IPv4 multicast addresses occupy the Class D range 224.0.0.0 to 239.255.255.255, and IPv6 multicast addresses always begin with the FF prefix.
Cisco Data Center Networking Technologies
Question
Which two addresses represent multicast addresses? (Choose two.)
Options
- A224.1.47.5
- B240.100.22.3
- CFF05::1
- D2001::1
Explanation
IPv4 multicast addresses occupy the Class D range 224.0.0.0 to 239.255.255.255, and IPv6 multicast addresses always begin with the FF prefix.
Common mistakes.
- B. 240.100.22.3 falls in the Class E range (240.0.0.0 to 255.255.255.255), which is reserved for experimental use and is entirely separate from the multicast range.
- D. 2001::1 is a global unicast IPv6 address - IPv6 multicast addresses must begin with FF, not with the 2001 prefix.
Concept tested. IPv4 and IPv6 multicast address ranges
Reference. https://www.iana.org/assignments/multicast-addresses/multicast-addresses.xhtml
Topics
#multicast address#IPv4 multicast#IPv6 multicast#address ranges
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