World of Computer Networking Your CCNA start - End-to-End Internet Protocol (IP) packet transmission - Part 3

The video tutorial explains the end-to-end process of data transmission from PC1 to PC2. It covers how the router processes and forwards frames, how Switch 2 handles Ethernet frames and updates its MAC address table, and how PC-2 receives and processes the frame. The tutorial also highlights that the transport layer segment remains unchanged throughout the transmission. Finally, it summarizes the entire process, emphasizing the roles of switches and routers in ensuring data integrity and successful delivery.

What does the router do to the data link header before sending the frame to Switch 2?

• It encrypts the header.

• It compresses the header.

• It strips the initial header and adds a new Ethernet header.

• It duplicates the header.

How does Switch 2 determine where to forward the Ethernet frame?

• By using a random port selection.

• By checking the IP address table.

• By asking the router for instructions.

• By consulting the MAC address table.

What action does PC2 take upon receiving the Ethernet frame?

• It performs decapsulation and processes the packet at the network layer.

• It encrypts the frame for security.

• It sends the frame back to the router.

• It discards the frame.

Which layer's header remains unchanged during the entire transmission from PC1 to PC2?

• Application Layer

• Network Layer

• Data Link Layer

• Transport Layer

What does the router modify in the IP header during the transmission?

• It encrypts the IP header.

• It adds a new IP header.

• It decrements the TTL and recalculates the header checksum.

• It changes the source IP address.