Identify the subnet ID for the IPv6 address 2001:DA48:FC5:A4:3D1B::1/64.

Identify the subnet ID for the IPv6 address 2001:DA48:FC5:A4:3D1B::1/64.

• A. 2001:DA48:FC5:A4:3D1B::/64
• B. 2001:DA48:FC5:A4::/64
• C. 2001:DA48:FC5:A4::1/64
• D. 2001:DA48:FC5:A4:3D1B::/128

Answer: (B)

In this scenario, the task is to determine the subnet ID from the given IPv6 address, 2001:DA48:FC5:A4:3D1B::1/64. The key element to understand here is how IPv6 subnetting works, specifically in relation to the prefix length indicated by the "/64". The prefix length "/64" means that the first 64 bits of the address are used to define the network portion or the subnet ID. In the address 2001:DA48:FC5:A4:3D1B::1, the subnet part consists of the first four blocks, which are represented as 2001:DA48:FC5:A4. The '3D1B' and the rest of the address (the '::1' part) represents the host portion. Thus, when truncated to just the network part with the /64 prefix, the subnet ID is indeed 2001:DA48:FC5:A4::/64. This representation indicates that all addresses in this subnet will share these first four blocks, while the latter parts can be varied to specify different hosts within the same network. In contrast, the other options deviate in ways that misunderstand the structure

In this scenario, the task is to determine the subnet ID from the given IPv6 address, 2001:DA48:FC5:A4:3D1B::1/64. The key element to understand here is how IPv6 subnetting works, specifically in relation to the prefix length indicated by the "/64".

The prefix length "/64" means that the first 64 bits of the address are used to define the network portion or the subnet ID. In the address 2001:DA48:FC5:A4:3D1B::1, the subnet part consists of the first four blocks, which are represented as 2001:DA48:FC5:A4. The '3D1B' and the rest of the address (the '::1' part) represents the host portion.

Thus, when truncated to just the network part with the /64 prefix, the subnet ID is indeed 2001:DA48:FC5:A4::/64. This representation indicates that all addresses in this subnet will share these first four blocks, while the latter parts can be varied to specify different hosts within the same network.

In contrast, the other options deviate in ways that misunderstand the structure