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CompTIA Exam N10-008 Topic 3 Question 65 Discussion
Topic #: 3
An attacker targeting a large company was able to inject malicious A records into internal name resolution servers. Which of the following attack types was MOST likely used?
Switches operate atLayer 2andLayer 3of the OSI model. Here's a brief explanation for each layer:
Layer 2 (Data Link Layer):
Switches primarily operate at this layer.
They use MAC addresses to forward frames within a local network (LAN).
Switches create and maintain MAC address tables to make forwarding decisions.
Examples of switches include Ethernet switches and VLAN switches.
Layer 3 (Network Layer):
Some advanced switches (known asLayer 3 switches) can perform routing functions.
Layer 3 switches can route traffic between different subnets within the same LAN.
They use IP addresses to make routing decisions.
Layer 3 switches combine the features of switches and routers.
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