Select the valid IPv6 addresses. (Choose all apply)
A.
::192:168:0:1
B.
2002:c0a8:101::42
C.
2003:dead:beef:4dad:23:46:bb:101
D.
::
E.
2000::
F.
2001:3452:4952:2837::
Explanation:
Answers A B C are correct because A and B are the short form of 0:0:0:0:192:168:0:1 and 2002:c0a8:0101:0:0:0:0:0042 while C are normal IPv6 address.Answer D is correct because :: is named the unspecified address and is typically used in the source field of a datagram that is sent by a device that seeks to have its IP address configured.
Answer E is not correct because a global-unicast IPv6 address is started with binary 001, denoted as 2000::/3 in IPv6 and it also known as an aggregatable global unicast address.The 2000:: (in particular, 2000::/3) is just a prefix and is not a valid IPv6 address.
The entire global-unicast IPv6 address range is from 2000::/128 to 3FFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF/128, resulting in a total usable space of over 42,535,295,865,117,307,932,921,825,928,971,000,000 addresses, which is only 1/8th of the entire IPv6 address space!
are you sure that the answer F is correct ? an other tesking say that it is not!
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Explanation:
Answers A B C are correct because A and B are the short form of 0:0:0:0:192:168:0:1 and 2002:c0a8:0101:0:0:0:0:0042 while C are normal IPv6 address.
Answer D is correct because :: is named the unspecified address and is typically used in the source field of a datagram that is sent by a device that seeks to have its IP address configured.
Answer E is not correct because a global-unicast IPv6 address is started with binary 001, denoted as 2000::/3 in IPv6 and it also known as an aggregatable global unicast address.The 2000:: (in particular, 2000::/3) is just a prefix and is not a valid IPv6 address.
The entire global-unicast IPv6 address range is from 2000::/128 to 3FFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF/128, resulting in a total usable space of over 42,535,295,865,117,307,932,921,825,928,971,000,000 addresses, which is only 1/8th of the entire IPv6 address space!
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wat about 5th one
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But what about the answer F?!!
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I think the question is flawed. I think if it asked for valid hosts addresses, it might be a better question.
The address 0:0:0:0:0:0:0:0 is called the unspecified address. It
must never be assigned to any node. It indicates the absence of an
address. One example of its use is in the Source Address field of
any IPv6 packets sent by an initializing host before it has learned
its own address.
The unspecified address must not be used as the destination address
of IPv6 packets or in IPv6 Routing Headers. An IPv6 packet with a
source address of unspecified must never be forwarded by an IPv6
router.
manchester(config-if)#ipv6 address ::
% Incomplete command.
manchester(config-if)#ipv6 address ::?
WORD X:X:X:X::X X:X:X:X::X/
manchester(config-if)#ipv6 address ::/127
%FastEthernet0/0: Error: ::/127 is invalid
manchester(config-if)#ipv6 address ::/128
%FastEthernet0/0: Error: ::/128 is invalid
manchester(config-if)#ipv6 address ::/64
%FastEthernet0/0: Error: ::/64 is invalid
manchester(config-if)#ipv6 address ::192:168:0:1/64
manchester(config-if)#ipv6 address 2002:c0a8:101::42/64
manchester(config-if)#ipv6 address 2003:dead:beef:4dad:23:46:bb:101/64
manchester(config-if)#ipv6 address 2000::/64
manchester(config-if)#ipv6 address 2001:3452:4952:2837::/64
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