6 Day 6

Question 1

What are the three parts of an IPv6 Global Unicast Address?

Answer 1

Global Routing Prefix
Subnet ID
Interface ID

Question 2

Ipv6 addresses can be classified into what three categories?

Answer 2

Unicast
Multicast
Anycast

Question 3

Convert the MAC address 00:0C:29:50:BF:B4

Answer 3

020C:29FF:FE50:BFB4

Question 4

Expand the abbreviated IPv6 address FE80::202:B3FF:FE1E:8329

Answer 4

FE80:0000:0000:0000:0202:B3FF:FE1E:8329

Question 5

What three methods are used to transition from IPv4 to IPv6?

Answer 5

Dual stacking
Tunneling
Translation

Question 6

Ipv6 Unique Local addresses are the equivalent to what IPv4 addresses?

Answer 6

Private

Question 7

Multicast traffic is restricted to sphere of influence called ___________.

Answer 7

Scopes

Question 8

NDP function where Multicast neighbor solicitations are sent for a host’s own IPv6 before attempting to use that address to communicate if a neighbor is already using that address and the host will not use it.

Answer 8

Duplicate Address Detection

Question 9

NDP function where MTU allows hosts to decide what size packets to use; usually set to 1500 bytes for Ethernet networks.

Answer 9

Parameter Discovery

Question 10

NDP function where NDP is able to determine reachability of a neighbor. If discovered info is stored in a cache and tracked.

Answer 10

Neighbor Unreachability Detection

Question 11

NDP function where routers use ICMPv6 redirect messages to inform hosts of more preferable routes.

Answer 11

Redirection

Question 12

NDP function where hosts can automatically configure themselves with an IPv6 address.

Answer 12

Address Autoconfig

Question 13

NDP function where hosts can automatically locate their default gateways: Accomplished by using two ICMPv6 multicast messages to all routers. Routers respond with an ad w/ its address to the All Nodes multicast address. FF02::2 FF02::1

Answer 13

Router Discovery

Question 14

NDP functions that allows a host to select a default router.

Answer 14

Next-Hop Determination

Question 15

NDP function that contains prefix information, which is simply IPv6 subnet info for the local link.

Answer 15

Prefix Discovery

Question 16

NDP function that is similar to router discovery; 2 ICMPv6 messages are used.
Host needing to know physical address sends a neighbor solicitation message.
Neighbor then sends physical address in a neighbor advertisement response message.

Answer 16

Address Resolution

Question 17

Unicast addresses assigned to more than one interface and typically on different hosts; Delivered to only one interface usually the closest.

Answer 17

Anycast

Question 18

Uniquely identifies an interface; packets sent are delivered only to the identified interface
Everything less than FF00

Answer 18

Unicast

Question 19

Can be used instead of broadcast; primarily designed for specific groups of devices
FF02::1 All Nodes
FFo2::2 All Routers

Answer 19

Multicast

Question 20

!Pv6 Address length:

Answer 20

128 bits
16 bytes
8 segments

Question 21

Multicast Traffic is restricted to scopes. Restrict multicast traffic to a specific organization, site or link.
Address Prefix - FF00::/8

Answer 21

Multicast Address Scopes

Question 22

0-8 bits of Multicast Address

Answer 22

Indicator

Question 23

9-16 of Multicast Address

Answer 23

Flags | Scope ID

Question 24

17-128 of Multicast Address

Answer 24

Multicast Group ID

Question 25

List Scope ID values

Answer 25

0
1
2
5
8
14
15

Question 26

What are the Multicast Address Scopes and what Scope ID values do they belong to?

Answer 26

Reserved - 0
Node Local Scope - 1
Link Local Scope - 2
Site Local Scope - 5 
Organization Local Scope - 8
Global Scope - 14
Reserved - 15

Question 27

IPv6 packets are encapsulated within IPv4 packets.
6to4, 6in4, Teredo, ISATAP
Handled by routers

Answer 27

Tunneling

Question 28

Dual stack devices can be configured to preform translation between IPv6 & IPv4, changing the packet headers.
IPv6 request —-> IPv4 —–IPv4 Infrastructure—->IPv6 if necessary

Answer 28

Translation

Question 29

Process of loading both IPv4 & IPv6 on network nodes . Allows a machine to utilize either.

Answer 29

Dual Stacking