Which three statements about IPv6 prefixes are true? (Choose three.)
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A. B. C. D. E. F.BDF
Answer:
B. FC00::/7 is used in private networks. C. FE80::/8 is used for link-local unicast. F. FF00::/8 is used for IPv6 multicast.
Explanation:
A. FEC0::/10 is not used for IPv6 broadcast. This prefix was previously defined for site-local addressing, but has been deprecated in favor of Unique Local Addresses (ULA).
B. FC00::/7 is used in private networks. This prefix is reserved for Unique Local Addresses (ULA) which are similar to IPv4 private addresses (10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16).
C. FE80::/8 is used for link-local unicast. This prefix is used for communication between devices on the same link or network segment. Link-local addresses are automatically configured and do not require a DHCP server.
D. FE80::/10 is not used for link-local unicast. This prefix does not exist.
E. 2001::1/127 is not used for loopback addresses. Loopback addresses are typically represented as ::1/128.
F. FF00::/8 is used for IPv6 multicast. Multicast addresses are used to send a single packet to multiple devices at the same time. The first octet of a multicast address is always 0xFF.