Imagine that Computer 1 generates an IPv4 packet that is destined for Computer 3. Assume that Computer 1 knows the IPv4 address of Computer 3, and also assume that the forwarding and routing tables of all switches and routers respectively are fully populated to ensure readily available end-to-end communication between any two devices. Explain step-by-step how that IPv4 packet will travel the network to arrive at its destination. In your answer, make sure to identify the source and destination MAC and IPv4 addresses by labeling them with the attached device name, for example, "Computer 3's MAC address" or "Computer 3's IP address". 

 

 

5. Imagine that all of the routers except for Router B and Router C are replaced with switches.

 

1. What would the new backbone architecture be (switched, routed, or hybrid)? Explain.

 

1. If Computer 1 broadcasts a data-link layer frame with this new architecture, which LANs and devices would receive this broadcast?

 

1. Suppose that a total of few hundred employees work in Building 1 and Building 2 with many more LANs than what is illustrated in the diagram. What would be the advantages and disadvantages of this new architecture as compared to the old?

For the tutor- please answer all the questions in the same sequence and give a detailed explanation for your answers.

 

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Router 1 Building 1 LAN 1 Switch 1 Building 2 LAN 3 Computer 1 Computer 3 Router 3 Switch 3 LAN 2 LAN 4 Router 2 Router 4 Switch 2 Switch 4 1920 3 Router A Router B Router C Router D LEGEND 10 Gbps Layer-3 Router Computer w/ 1 Gbps Ethernet Network Adapter 1 Gbps Layer-3 Router Category 6 Ethernet Cable Router 1 Building 1 LAN 1 Switch 1 Building 2 LAN 3 Computer 1 Computer 3 Router 3 Switch 3 LAN 2 LAN 4 Router 2 Router 4 Switch 2 Switch 4 1920 3 Router A Router B Router C Router D LEGEND 10 Gbps Layer-3 Router Computer w/ 1 Gbps Ethernet Network Adapter 1 Gbps Layer-3 Router Category 6 Ethernet Cable