Exam 200-301 topic 1 question 824 discussion

A-valid multicast IPv6 address B-valid single IPv6 address C-valid IPv6 link local address D-not valid IPv6 address - not long enough :-) therefore the correct answer is B

Key word , "distributed services such as DHCP or DNS" means routable and global = Global -unicast ipv6 starts with 2001:000. So Answer B is correct.

B is correct Anycast was meant to be used for services such as DNS and HTTP but was never really implemented as designed. There is no special prefix for an IPv6 anycast address. An IPv6 anycast address uses the same address range as global unicast addresses. https://www.ciscopress.com/articles/article.asp?p=2803866&seqNum=6#:~:text=Anycast%20was%20meant%20to%20be,range%20as%20global%20unicast%20addresses.

I am selecting B because I think there is a typo in the selections. However, the selection "2001:db8:0234:ca3e::1/128" is not a range but a single address.

I apologize for the confusion in my previous response. Anycast addresses for distributed services like DHCP or DNS in IPv6 are typically chosen from the global unicast address space. The specific address range may vary based on your network's design and requirements, but it would be within the global unicast address space. Out of the options you provided: A. FF00:1/12 - This is in the multicast address space, not suitable for anycast addresses. B. 2001:db8:0234:ca3e::1/128 - This is a specific host address in the documentation prefix 2001:db8, not suitable for anycast. C. FE80::1/10 - This is in the link-local address space, not suitable for anycast. D. 2002:db84:3f30:ca84:be76:2/64 - This is a global unicast address, but it's not commonly used for anycast. To configure anycast addresses for distributed services like DHCP or DNS, you should select a range of global unicast addresses that are not assigned to specific devices and advertise that address on multiple nodes in different locations. The specific address range would depend on your network design and requirements, but it would typically be within the global unicast address space, not one of the addresses you provided.

The key characteristic of anycast addresses is that they are assigned to multiple interfaces (nodes) in different locations. However, these anycast addresses are regular global unicast addresses, and there is no special reserved range specifically for anycast use.