Which statement describes the role of the netmask?

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Multiple Choice

Which statement describes the role of the netmask?

Explanation:
The netmask defines which portion of an IP address represents the network. By applying the netmask to an IP address, you identify the network address (the network bits) and separate them from the host part (the host bits). This is essential for routing and subnetting: it tells a device whether a destination is on the same local network or if traffic must be sent to a router. For example, with an IP of 192.168.1.10 and a netmask of 255.255.255.0, the network portion is 192.168.1.0. The netmask is not about a MAC address, a default gateway, or an application port; those serve different purposes in networking.

The netmask defines which portion of an IP address represents the network. By applying the netmask to an IP address, you identify the network address (the network bits) and separate them from the host part (the host bits). This is essential for routing and subnetting: it tells a device whether a destination is on the same local network or if traffic must be sent to a router.

For example, with an IP of 192.168.1.10 and a netmask of 255.255.255.0, the network portion is 192.168.1.0. The netmask is not about a MAC address, a default gateway, or an application port; those serve different purposes in networking.

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