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As part of an attack, a threat actor purposefully overflows the content-addressable memory (CAM) table on a switch. Which of the following types of attacks is this scenario an example of?
Correct Answer: C
* Definition of MAC Flooding: * MAC flooding is an attack where a malicious actor sends numerous fake MAC addresses to a switch, overwhelming its CAM table. The CAM table stores MAC addresses and their associated ports for efficient traffic forwarding. * Impact of MAC Flooding: * CAM Table Overflow:When the CAM table is full, the switch cannot learn new MAC addresses and is forced to broadcast traffic to all ports, leading to a degraded network performance and potential data interception. * Switch Behavior:The switch operates in a fail-open mode, treating the network as a hub, which can be exploited for eavesdropping on traffic. * Comparison with Other Attacks: * ARP Spoofing:Involves sending false ARP (Address Resolution Protocol) messages to associate the attacker's MAC address with the IP address of another device. * Evil Twin:Involves creating a rogue wireless access point that mimics a legitimate one to intercept data. * DNS Poisoning:Involves corrupting the DNS cache with false information to redirect traffic to malicious sites. * Preventive Measures: * Port Security:Configure port security on switches to limit the number of MAC addresses per port, preventing CAM table overflow. * Network Segmentation:Use VLANs to segment network traffic and limit the impact of such attacks. References: * CompTIA Network+ study materials on network security threats and mitigation techniques.