Attackers are using DDOS attacks on our organization using MAC flood, what does that attack do?
A: Opens many TCP sessions but never replies to the ACK from the host.
B: Sends many user datagram protocol packets.
C: Sends many ethernet frames, each with different media access control addresses,
D: Sends many IP addresses to a router.
CBK 4: Communication and Network Security
Source: ThorTeaches.com practice tests
C: An attacker sends multiple dummy Ethernet frames, each with a different MAC address, Network switches treat MAC addresses separately, and hence reserve some resources for each request. When all the memory in a switch is used up, it either shuts down or becomes unresponsive. In a few types of routers, a MAC flood attack may cause these to drop their entire routing table, thus disrupting the whole network under its routing domain.