PC1 and PC3 are on different networks separated by a router, RT1. PC1 issues an ARP request because it needs to send a packet to PC3. In this scenario, what will happen next?

Last Updated: Oct 22, 2020
IT Exam Items Repository › Category: CCNA CyberOps › PC1 and PC3 are on different networks separated by a router, RT1. PC1 issues an ARP request because it needs to send a packet to PC3. In this scenario, what will happen next?

PC1 and PC3 are on different networks separated by a router, RT1. PC1 issues an ARP request because it needs to send a packet to PC3. In this scenario, what will happen next?

  • RT1 will forward the ARP request to PC3.
  • RT1 will drop the ARP request.
  • RT1 will send an ARP reply with its own MAC address.
  • RT1 will send an ARP reply with the PC3 MAC address.

Explanation: When a network device has to communicate with a device on another network, it broadcasts an ARP request asking for the default gateway MAC address. The default gateway (RT1) unicasts an ARP reply with its MAC address.

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