Apple Certified Support Professional (ACSP) Practice Exam

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What is the primary purpose of a subnet mask?

To identify the MAC address of a device

To determine the IP address range for a local network

A subnet mask serves to delineate which part of an IP address identifies the network and which part identifies the host within that network. This is essential for determining the IP address range for a local network, as it defines how many IP addresses can be used and how they are organized. By applying a subnet mask to an IP address, devices on the same local network can communicate with each other without needing to traverse the larger internet.

The subnet mask effectively defines the boundaries of a subnet, allowing routing decisions to be made by identifying which addresses are local and which require routing to other networks. This enables efficient management of IP address space and helps prevent issues with overlapping addresses, thus optimizing network performance.

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To enable Internet Protocol routing

To encrypt data sent over a network

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