21. What is the unspecified address in IPv6? And what it is used for?Â 22. What...

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Electrical Engineering

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?

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21An IPv6 address with all 128 bits set to zero is called theunspedified adddress which correspond to 0000 in IPv4 Thisaddress should not be assigned to any host and it should only beused as the source address by initializing host before it haslearned of its own address If a host listens for incomingconnection on this address it means that the host andor itsapplication is listening on all interfaces belong to that hostThe unspecified address 00000000 or is used only toindicate the absence of an address It is equivalent to the IPv4unspecified address of 0000 The unspecified address istypically used as a source address when a unique address has notyet been determined The unspecified address is never assigned toan interface or used as a See Answer

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