The Three Parts of an IPv6 Global Unicast Address

ACD

IPv6 is the latest version of the Internet Protocol (IP) and is designed to address the limitations of IPv4. IPv6 addresses are 128-bit long and are represented in hexadecimal format, separated by colons. An IPv6 global unicast address is a type of IPv6 address that is globally unique and used for communication between hosts across the Internet.

The three parts of an IPv6 global unicast address are:

1. Global Routing Prefix: The Global Routing Prefix is a part of the IPv6 address that identifies the network portion of the address that has been provided by an ISP. It is used by routers to determine the path that packets need to take to reach their destination. The global routing prefix is typically assigned by an ISP to a customer, and it is used to identify the customer's network on the Internet.

2. Subnet ID: The Subnet ID is a part of the IPv6 address that identifies networks inside of the local enterprise site. It is used by routers to determine the local network on which a host resides. The subnet ID is assigned by the local network administrator, and it is used to create subnets within the local enterprise site.

3. Interface ID: The Interface ID is a part of the IPv6 address that is used to identify the local host on the network. It is unique within the local network, and it is used by routers to forward packets to the correct host. The interface ID is typically generated using a combination of the host's MAC address and a randomly generated number.

Option B: "an interface ID that is used to identify the local network for a particular host" is not correct because the subnet ID identifies the network inside the local enterprise site, not the interface ID.

Option E: "a global routing prefix that is used to identify the portion of the network address provided by a local administrator" is not correct because the global routing prefix is assigned by the ISP, not the local administrator.