IPv6 Prefixes: True Statements | Exam 200-125 | Cisco Certification

True Statements about IPv6 Prefixes | Exam 200-125 | Cisco Certification

Prev Question Next Question

Question

Which three statements about IPv6 prefixes are true? (Choose three.)

Answers

Explanations

Click on the arrows to vote for the correct answer

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.