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CompTIA Network+ N10-009 Practice Question

What is the primary function of port security on network switches?

Encrypt data transmitted from one port to another
Limit the bandwidth usage on a network
Monitor traffic patterns to detect anomalies
Limit the number of MAC addresses allowed on a switch port

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Answer Description

Port security is a layer 2 traffic control feature used mainly to limit the number of MAC addresses allowed on a single port. This prevents unauthorized devices from accessing the network and mitigates risks like MAC flooding. Limiting bandwidth does not relate directly to security, and monitoring traffic patterns and transmitting data securely are functions more closely associated with network monitors and encryption protocols, respectively.

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What is a MAC address and why is it important for port security?

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How does limiting the number of MAC addresses on a switch port prevent network attacks?

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What happens when a device with a non-allowed MAC address attempts to connect to a port with port security enabled?

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CompTIA Network+ N10-009

Network Security

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Networking Concepts

Network Implementation

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