21. What is the unspecified address in IPv6? And what it is used for?Â
22. What are different mechanisms used for IPy4 and IPv6 transitions and migration?Â
23. What are various forms of shortened version of this IPv6 address can get represented by?Â
4BF5:0000:0000:0000:BASF:039A:000A:2176Â
24. How does IPv6 allow a payload size of more than 64K? Which header is used to facilitate this?Â
25. What are different types of cost metrics often used in routing algorithm to determine the shortest path?Â
26. What is the advantage of hierarchical routing?Â
27. What are the significance of the fields \"H\" and \"G\" in a host's or router's routing table entry?