ipv6

Question 1

Unspecified Address

Answer 1

::

Question 2

Loopback

Answer 2

::1

Question 3

Global Unicast Range

Answer 3

2000::/3

Question 4

Unique Local Unicast

Answer 4

FC00::/7

Question 5

Link-Local Unicast

Answer 5

FE80::/10

Question 6

Multicast

Answer 6

FF00::/8

Question 7

Modified EUI-64

Answer 7

/64 address using the mac-address with the U/L bit flipped. The format is using the OUI (with U/L bit flipped) following by FFFE followed by the remainder of the MAC

Question 8

SLAAC

Answer 8

Stateless Address Autoconfiguration

Question 9

SLAAC States

Answer 9

Tentative, Preferred, Depreciated, Valid, Invalid

Question 10

DAD

Answer 10

Duplicate Address Detection

Question 11

Unique Local Unicast Format

Answer 11

< 7 bits >< 40 bits >< 16 bits >< 64 bits >

Question 12

IPv4 Embedded Address Format

Answer 12

IPv4-Capatible IPv6 Address 
<80 bits><16 bits><32 bits>
      ::         0000    :w.x.y.z
IPv4-Mapped IPv6 Address
<80 bits><16 bits><32 bits>
      ::         FFFF    :w.x.y.z

Question 13

Multicast Format

Answer 13

< 8 bits ><4 bits>< 4 bits >< 112 bits >

< Flag >

Question 14

Multicast Scope

Answer 14

0 = Reserved
1=Interface-Local Scope
2=Link-Local Scope
3=Unicast-prefix-based address
4=Admin-Local Scope
5=Site-Local Scope
6=Unassigned
7=Rendezvous Point Flag
8=Organizational-Local Scope
9=Unassigned
A=Unassigned
B=Unassigned
C=Unassigned
D=Unassigned
E=Global Scope
F=Reserved

Question 15

Solicited-Node Multicast Address

Answer 15

FF02:0:0:0:0:1:FF00:://104 where the last 24 bits are from the address. There is a Solicited-Node Multicast address for each Link-Local and Global Address assigned.

Question 16

DHCPv6 Address

Answer 16

Link-Local: FF02::1:2

Site-Local: FF05::1:2

Question 17

DHCPv6 Message Types

Answer 17

1=Solicit
2=Advertise
3=Request
4=Confirm
5=Renew
6=Rebind
7=Reply
8=Release
9=Decline
10=Reconfigure
11=Information-Request
12=Relay-Forw
13=Relay-Repl

Question 18

DHCPv6 Rapid-Commit Option

Answer 18

Allows DHCPv6 to work with only a solicit and reply message but only works if there is only 1 DHCPv6 server. Otherwise every DHCPv6 server assigns an address but only one is actually used, the one first received.

Question 19

IPv6 Tunnel Types

Answer 19

Manual
IPv4-Compatible (Cisco does not recommend)
6to4
ISATAP

Question 20

6to4 Tunnels

Answer 20

Dynamic Multipoint tunnels that require IPv6 destination addresses be in the 2002::/16 range. Addresses are reverse engineered from IPv4 tunnel endpoint address as: 2002:::/48

Question 21

ISATAP Tunnels

Answer 21

Tunnel address must use EUI-64 and assigns client addresses via SLAAC. The EUI-64 address uses special ISATAP IANA assigned code of 0000:5EFE. The last 32 bits of the IPv6 address are the Ipv4 address of the tunnel endpoint. The address format is below
<0000:5EFE>

Question 22

Well-known Link-Local Multicast

Answer 22

FF02::1 All Nodes
FF02::2 All Routers
FF02::5 All OSPF Routers
FF02::6 All OSPF DR Routers
FF02::A All EIGRP Routers
FF02::9 All ISIS Routers

Question 23

Embedded RP Schema

Answer 23

FF7:0:<64-bit RP Prefix>:<32 bit group ID>:<1-f>