N10-005 Question #455: Real Exam Question with Answer & Explanation

The correct answer is C: Port security. Port security is a Layer 2 switch feature that restricts which devices can connect to a switch port based on MAC address. An administrator can configure each port to allow only specific (static) MAC addresses or limit the number of MAC addresses per port, blocking unauthorized de

Question

A network administrator decides to secure their small network by allowing only specific MAC addresses to gain access to the network from specific switches. Which of the following is described by this example?

Options

APacket filtering
BHardware firewalls
CPort security
DStateful inspection

Explanation

Port security is a Layer 2 switch feature that restricts which devices can connect to a switch port based on MAC address. An administrator can configure each port to allow only specific (static) MAC addresses or limit the number of MAC addresses per port, blocking unauthorized devices from gaining network access. Packet filtering operates at Layer 3 (IP addresses and ports, typically on routers or firewalls). Hardware firewalls filter traffic based on IP/port rules between network segments. Stateful inspection is a firewall technique that tracks active connection states to allow or deny traffic - none of these involve binding specific MAC addresses to switch ports.

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