An identifier for the network an IP address belongs to (32-bit in IPv4).

An identifier for the network an IP address belongs to (32-bit in IPv4).

• A. Network ID
• B. Network Topology
• C. NIC
• D. NetBIOS

Answer: (A)

Network ID is the identifier for the network the IP address belongs to. In IPv4, an address is 32 bits and is divided into a network portion and a host portion according to the subnet mask (or CIDR prefix). The network ID is the part that identifies which network the address is on, while the remaining bits identify a specific device on that network. Routers use this network portion to decide where to forward packets. For example, with 192.168.1.10 and a /24 mask, the network ID is 192.168.1.0. The other terms refer to different concepts: network topology is the layout of devices, NIC is hardware, and NetBIOS is a legacy name service.

Network ID is the identifier for the network the IP address belongs to. In IPv4, an address is 32 bits and is divided into a network portion and a host portion according to the subnet mask (or CIDR prefix). The network ID is the part that identifies which network the address is on, while the remaining bits identify a specific device on that network. Routers use this network portion to decide where to forward packets. For example, with 192.168.1.10 and a /24 mask, the network ID is 192.168.1.0. The other terms refer to different concepts: network topology is the layout of devices, NIC is hardware, and NetBIOS is a legacy name service.