IPv6

Question 1

What is a Global Unicast Address Prefix?

Answer 1

Global Unicast addresses typically start with the “2000::/3” prefix, followed by a 64-bit network prefix.

Question 2

What is a Link-Local Address Prefix

Answer 2

Link-Local addresses have the prefix “fe80::/10”

Question 3

What is a ULA (Unique Local Address) Prefix?

Answer 3

ULAs have the prefix “fc00::/7,” followed by a 40-bit global identifier.

Question 4

What is a Multicast Address Prefix?

Answer 4

Multicast addresses start with the prefix “ff00::/8,” followed by flags and a multicast group identifier

Question 5

What is a Loopback Address Prefix?

Answer 5

The loopback address consists of all zeros in the network prefix field and a host identifier of “::1.”

Question 6

What is the purpose of a Global Unicast Address?

Answer 6

Global Unicast addresses are the IPv6 equivalent of public IPv4 addresses. They are used for communication over the global Internet.

Question 7

What is the purpose of a Link-Local Address?

Answer 7

Link-Local addresses are used for communication on a single network segment (link). They are essential for basic network operations like neighbor discovery and auto-configuration.

Question 8

What is the purpose of Unique Local Addresses?

Answer 8

Unique Local Addresses are used for private, non-global communications within an organization or network, similar to IPv4 private addresses.

Question 9

What is the purpose of Multicast Addresses?

Answer 9

Multicast addresses are used to send data packets to multiple destinations simultaneously. They are similar to broadcast addresses in IPv4 but more efficient and scalable.

Question 10

What is the purpose of Loopback Interfaces?

Answer 10

The loopback address is used for testing network interfaces. The “::1” address is the IPv6 equivalent of “127.0.0.1” in IPv4.