Which sequence correctly identifies the order of the steps that a router will perform when it receives a packet on an Ethernet interface?

Which sequence correctly identifies the order of the steps that a router will perform when it receives a packet on an Ethernet interface?

• 1. The router examines the destination MAC address.
  2. The router identifies the Ethernet Type field.
  3. The router de-encapsulates the Ethernet frame.
  4. The router examines the destination IP address.
• 1. The router de-encapsulates the Ethernet frame.
  2. The router examines the destination MAC address.
  3. The router identifies the Ethernet Type field.
  4. The router examines the destination IP address.
• 1. The router examines the destination IP address.
  2. The router examines the destination MAC address.
  3. The router identifies the Ethernet Type field.
  4. The router de-encapsulates the Ethernet frame.
• 1. The router examines the destination MAC address.
  2. The router identifies the Ethernet Type field.
  3. The router examines the destination IP address.
  4. The router de-encapsulates the Ethernet frame.
• 1. The router examines the destination IP address.
  2. The router examines the destination MAC address.
  3. The router de-encapsulates the Ethernet frame.
  4. The router identifies the Ethernet Type field.

Explanation: When a router receives a packet the first thing that happens is the destination MAC address is checked to verify that the rest of the packet should be processed. Assuming the destination MAC address matches the address on the router interface, the Ethernet Type field is checked to determine what Layer 3 protocol is encapsulated in the frame. The frame is then de-encapsulated and the destination IP address is examined to determine where the packet should be sent.

Exam with this question: 16.3.4 Module Quiz - Troubleshoot Static and Default Routes Answers