ICND1: Interconnecting Cisco Networking Devices Part 1 (CCENT, legacy) — Question 80

Which two IP addresses are valid multicast addresses? (Choose two.)

Answer options

• A. 127.0.0.5
• B. 223.0.0.1
• C. 224.0.0.1
• D. 239.1.1.1
• E. 254.5.5.5

Correct answer: B, D

Explanation

The correct multicast addresses fall within the range of 224.0.0.0 to 239.255.255.255. Therefore, 223.0.0.1 (option B) and 239.1.1.1 (option D) are valid multicast addresses, while 127.0.0.5 (option A) is a loopback address, and 254.5.5.5 (option E) is a reserved address, making them invalid for multicast purposes.