6.3

Question 1

What is the purpose of Automatic Private IP Addressing (APIPA)?

Answer 1

For clients to talk locally when they could not get a DHCP server

Question 2

How do you know if a host is using an APIPA address?

Answer 2

They use a range from
169.254.0.1
169.254.255.254

Question 3

Which IP configuration parameters are set when APIPA is used? Which parameters are not set?

Question 4

How does address autoconfiguration work on IPv6 networks?

Answer 4

Through Neighbor Discovery Protocol

Question 5

What configuration parameters can be supplied using DHCPv6?

Question 6

What does ND do?

Answer 6

Address auto-config
Prefix discovery
Local address resolution

Question 7

What is Prefix discovery?

Answer 7

Devices send out a router solicitation (RS), basically asking:
👉 “Hey, router, what network am I on?”

Routers answer with a router advertisement (RA), which says:
👉 “You’re on network X.Y.Z. Here’s some extra info, like the max packet size (MTU) and how many hops to other networks (hop limit).”

Question 8

What is Address Autoconfig?

Answer 8

Dynamically gives hosts IPv6 address using NS (Neighbor solicitation) and NA (Neighbor advertisement)

Question 9

What is SLAAC?

Answer 9

Stateless Address Autoconfig.

Uses ND, RA (router advert) , RS (Router solicitation)

It doesn’t need a DHCP server for IP. Uses the router to get IP address

Question 10

What is ICMP?

Answer 10

Diagnostic or control
messages between network devices
.
 ICMP is utilized for error reporting, such as unreachable hosts or network segments, and for
operational queries like echo requests and replies (used by tools like ping).

Question 11

What is ICMPv6 for?

Answer 11

ICMPv4 :Unreachable / time exceeded
ICMPv6: adds Packet Too Big MTU error
.

Question 12

What’s the multicast address for IPv6?

Answer 12

ff02::1:2

Question 13

Does IPv6 reservation use a MAC address?

Answer 13

No