World of Computer Networking Your CCNA start - Summary of End-to-End Internet Protocol (IP) Packet Transmission Example

The video tutorial explains the process of sending an IP packet from PC-1 to PC-2. It covers how switches perform MAC address table lookups without modifying the Ethernet frame, and how the router processes the packet by examining the IP header and adding a new datalink header. The tutorial also discusses the return packet process and introduces the concept of routing with multiple routers.

What is the primary function of switches in the process of sending an IP packet?

• Performing lookups in MAC address tables

• Modifying the Ethernet frame

• Adding a new data link header

• Examining the IPv4 header

What does the router do after removing the initial Ethernet header?

• It sends the packet back to the switch

• It performs lookups in MAC address tables

• It modifies the Ethernet frame

• It examines the IPv4 header

Before forwarding the packet, what does the router add?

• A new Ethernet frame

• A new IPv4 header

• A new data link header

• A new MAC address

What happens when PC-2 decides to send a packet back to PC-1?

• The packet is modified by the switch

• The packet is sent directly without processing

• The network devices perform similar actions as before

• The packet is dropped

What is introduced in the final section regarding network routing?

• The concept of multiple routers between hosts

• The concept of Ethernet frame modification

• The concept of a single router

• The concept of direct packet transmission