Describe an IPv6 Network Address and Subnet

Question 1

What is the primary difference between IPv4 and IPv6 addresses?

Answer 1

IPv4 addresses are 32-bit long and represented in decimal format (e.g., 192.168.1.1).

IPv6 addresses are 128-bit long and represented in hexadecimal format (e.g., 2001:0db8:85a3:0000:0000:8a2e:0370:7334).

Question 2

How many bits are in an IPv6 address?

Answer 2

An IPv6 address is 128 bits long.

Question 3

How can an IPv6 address be shortened?

Answer 3

Leading zeros in any group can be omitted.

Consecutive sections of zeros can be replaced with a double colon (::), but this can only be done once in an address (e.g., 2001:0db8:85a3::8a2e:0370:7334).

Question 4

What is the most commonly used IPv6 subnet size?

Answer 4

The most commonly used IPv6 subnet size is /64, which provides a vast number of host addresses within each subnet.

Question 5

How are IPv6 addresses categorized?

Answer 5

IPv6 addresses are categorized into three types: Unicast (one-to-one), Multicast (one-to-many), and Anycast (one-to-nearest).

Question 6

What is the link-local address in IPv6?

Answer 6

Link-local addresses (starting with fe80::/10) are used for communication within the same link (network segment) and are not routable on the internet.

Question 7

What is the significance of the IPv6 address 2000::/3?

Answer 7

The IPv6 address block 2000::/3 is used for global unicast addresses, which are routable on the internet.