IPv6

Question 1

IPv6

Answer 1

Is a unique 128-bit hexadecimal number that is used to identify a node on a network, it is separate into 8 hextets each with 4-bit hexadecimal digit

Question 2

IPv6 shorthand notation

Answer 2

1) Remove leading zeros
2) first multiple sequences (2 or more) of zeros can be replaced with ::
2001:0db8:0000:0000:0abc:0000:def0:1234
= 2001:db8:0000:0000:abc:0:def0:1234
= 201:db8::abc:0:def0:1234

Question 3

IPv6 subnet mask

Answer 3

Always written in CIDR
- /48-bit is used by the ISP,
- /64-bit is used for the Host
- bits between /48 & /64 can be used for Subnet IDs

Question 4

Unicast address types

Answer 4

Global Unicast
- address used for public networks
- address starts with 2000:/3
Unique Local
- address used for private networks
- not routable on the internet
- address starts with FD00::/8
Link local
- used for sending packets over local subnet
- not routable
- address starts with FE80::/10

Question 5

IPv6 address assignment

Answer 5

Statically assigned
Self-assigned
DHCPv6
Stateless Address Auto configuration (SLAAC)

Question 6

Extended Unique Identifier (EUI-64)

Answer 6

Is a method used by a IPv6 device to automatically configure IPv6 host address, by using it’s MAC address to generate a unique 64-bit interface ID.
It adds FFFE into the middle of the MAC address