Week 6 IPv6

Question 1

How many bits does IPv6 has?

Answer 1

128

Question 2

Multicast

Answer 2

A way of addressing groups of hosts all at once.
FF00::

Question 3

Link local unicast addresses

Answer 3

Allow local network segment communications and are configured based upon a host’s MAC address.
FE80:

Question 4

Version field

Answer 4

A 4 bit field that defines what version of IP is in use

Question 5

Traffic class field

Answer 5

An 8 bit field that defines the type of traffic contained within the IP datagram and allows for different classes of traffic to receive different priorities

Question 6

Flow label field

Answer 6

A 20 bit field that’s used in conjunction with the traffic class field for routers to make decisions about the quality of service level for a specific datagram

Question 7

Payload length field

Answer 7

A 16 bit field that defines how long the data payload section of the datagram is

Question 8

Next header field

Answer 8

A unique concept to IPv6

Question 9

Hop limit field

Answer 9

An 8 bit field that’s identical in purpose to the TTL field in an IPv4 header

Question 10

Source and Destination fields

Answer 10

They both have 128 bits

Question 11

IPv6 tunnels

Answer 11

Servers take incoming IPv6 traffic and encapsulate it within traditional IPv4 datagram

Question 12

IPv6 tunnel broker

Answer 12

Companies that provide IPv6 tunneling endpoints for you so you don’t have to introduce additional equipment to your network

Question 13

Which IPv6 header field indicates how many routers can forward a packet before it’s discarded?

Answer 13

Hop limit field

Question 14

The IPv4 mapped address space within IPv6 always start with

Answer 14

80 zeros

Question 15

For IPv6 to travel on IPv4 network which 2 technologies are used?

Answer 15

IPv6 tunnels
Datagrams