IPv4 subnets are created by borrowing bits from which portion of the IP address?

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Multiple Choice

IPv4 subnets are created by borrowing bits from which portion of the IP address?

Explanation:
Subnetting IPv4 addresses expands the network portion by taking bits away from the host portion. An IP address is interpreted with a network portion that identifies the subnet, and a host portion that identifies the specific device within that subnet. The subnet mask determines how many total bits are used for the network. To create multiple subnets within the same network, you borrow bits from the host portion and move them into the network portion by lengthening the mask. For example, with a class C address that defaults to /24, borrowing one bit from the host portion yields a /25 mask, splitting the range into two subnets: 192.168.1.0/25 and 192.168.1.128/25. Mac addresses and payload are not part of the IP addressing scheme—the MAC address is a data-link layer hardware identifier, and the payload is the actual data carried by the packet.

Subnetting IPv4 addresses expands the network portion by taking bits away from the host portion. An IP address is interpreted with a network portion that identifies the subnet, and a host portion that identifies the specific device within that subnet. The subnet mask determines how many total bits are used for the network. To create multiple subnets within the same network, you borrow bits from the host portion and move them into the network portion by lengthening the mask.

For example, with a class C address that defaults to /24, borrowing one bit from the host portion yields a /25 mask, splitting the range into two subnets: 192.168.1.0/25 and 192.168.1.128/25.

Mac addresses and payload are not part of the IP addressing scheme—the MAC address is a data-link layer hardware identifier, and the payload is the actual data carried by the packet.

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