Multicast

Question 1

General

Answer 1

ff00: :/8
ff00: :/12 - well known

Device sends a single packet to multiple destinations simultaneously

8 bit : prefix
4 bit : flags (dynamic or well known)
4 bit : scope - the range to which routers can forward the multicast packet
112 bit : group id

Question 2

All nodes

Answer 2

ff02::1

Question 3

All routers

Answer 3

ff02::2

Question 4

Multicast group

Answer 4

An address that is intended for more than 1 computer.

Computer can willingly join multicast groups.

Question 5

The least significant bit (LSB)

Answer 5

Permanent (0): These addresses, known as predefined multicast addresses, are assigned by IANA and include both well-known and solicited multicast.

Nonpermanent (1): These are “transient” or “dynamically” assigned multicast addresses. They are assigned by multicast applications.

Question 6

Predefined

Answer 6

Well-known multicast addresses

Solicited-node multicast addresses

Question 7

All OSPFv3 routers

Answer 7

ff02::5

Question 8

All EIGRP (IPv6) routers

Answer 8

ff02::a

Question 9

All Rip routers

Answer 9

ff02::9

Question 10

Solicited node group

Answer 10

ff02::1:ff + 24

1. DAD
2. Neighbor discovery (mac, no broadcast)