Network Routing

Question 1

IPv6 Features

Answer 1

1) Larger Address Space
2) Simpler Header
3) Security and Mobility
4) Transition Richness

Question 2

Two Ways to Shorten IPv6 Addresses

Answer 2

1) The leading zeros in a field can be omitted, so that 010f can be written as 10f. A field that contains all zeros (0000) can be written as 0.
2) Successive fields of zeros can be represented as a double colon (::) but only once in an address.

Question 3

IPv6 Address Types

Answer 3

1) Unicast
2) Multicast
3) Anycast

Question 4

IPv6 Global Unicast Address Prefix

Answer 4

2000::/3

Question 5

IPv6 Link-Local Address Prefix

Answer 5

fe80::/10

Question 6

IPv6 Unique Local Address Prefix

Answer 6

fc00::/7

Question 7

IPv6 Loopback Address Prefix

Answer 7

::1

Question 8

IPv6 Unspecified Address Prefix

Answer 8

::

Question 9

EUI-64 Format Interface ID

Answer 9

Derived from the 48-bit MAC address by inserting the hexadecimal number fffe between the upper 3 bytes (OUI field) and the lower 3 vendor assigned bytes of the MAC address. Then, the seventh bit from the left of the first octet, or the universal/local (U/L) bit, is inverted.

Question 10

IPv6 Multicast Address Prefix

Answer 10

ff00::/8

Question 11

Flow Label

Answer 11

This new header field has a length of 20 bits and is used to mark individual traffic flows with unique values. Routers are expected to apply an identical quality of service (QoS) treatment to each packet in a flow.

Question 12

ICMPv6 1

Answer 12

Destination Unreachable

Question 13

ICMPv6 128

Answer 13

Echo Request

Question 14

ICMPv6 129

Answer 14

Echo Reply

Question 15

ICMPv6 133

Answer 15

Router Soliciation

Question 16

ICMPv6 134

Answer 16

Router Advertisemant

Question 17

ICMPv6 135

Answer 17

Neighbor Solicitation

Question 18

ICMPv6 136

Answer 18

Neighbor Advertisement

Question 19

ICMPv6 Neighbor Solicitation

Answer 19

Uses ICMPv6 neighbor solicitation and neighbor advertisement messages to learn MAC addresses.