Of course! I'd be happy to assist you with your computer network assignment. Below is a challenging question on network design along with a detailed solution and step-by-step explanations.
Assignment Question:
Consider a multinational company with three branch offices located in different countries: Office A, Office B, and Office C. The company wants to establish a network architecture to ensure efficient communication and data transfer between these locations. You are tasked with designing the network and calculating the bandwidth requirements for each office.
Office A has 100 employees, Office B has 75 employees, and Office C has 50 employees. Each employee in all offices requires an average bandwidth of 2 Mbps for regular operations.
The company plans to implement a hub-and-spoke network topology, where the central headquarters serves as the hub, and the branch offices act as spokes.
The WAN connections between the headquarters and the branch offices will be established using MPLS technology.
The company wants to allocate 20% of the total available bandwidth for VoIP communication between offices.
Assume a safety margin of 25% to account for any spikes in network traffic or future growth.
Calculate the bandwidth requirements for each office, considering the given parameters and requirements. Round the results to the nearest whole number.
Solution:
Step 1: Calculate the total bandwidth required for each office:
Office A: Total bandwidth = Number of employees * Bandwidth per employee = 100 * 2 Mbps = 200 Mbps
Office B: Total bandwidth = Number of employees * Bandwidth per employee = 75 * 2 Mbps = 150 Mbps
Office C: Total bandwidth = Number of employees * Bandwidth per employee = 50 * 2 Mbps = 100 Mbps
Step 2: Calculate the total bandwidth required for VoIP communication:
Total VoIP bandwidth = Total bandwidth of all offices * VoIP allocation percentage = (200 Mbps + 150 Mbps + 100 Mbps) * 0.20 = 450 Mbps * 0.20 = 90 Mbps
Step 3: Calculate the total bandwidth required with the safety margin:
Total bandwidth with safety margin = Total bandwidth of all offices + Total VoIP bandwidth = 200 Mbps + 150 Mbps + 100 Mbps + 90 Mbps = 540 Mbps
Step 4: Calculate the final bandwidth requirements after considering the safety margin:
Office A: Final bandwidth = Total bandwidth of Office A + Office A's share of VoIP bandwidth = 200 Mbps + (90 Mbps * (200 Mbps / 540 Mbps)) ≈ 200 Mbps + 33 Mbps ≈ 233 Mbps
Office B: Final bandwidth = Total bandwidth of Office B + Office B's share of VoIP bandwidth = 150 Mbps + (90 Mbps * (150 Mbps / 540 Mbps)) ≈ 150 Mbps + 25 Mbps ≈ 175 Mbps
Office C: Final bandwidth = Total bandwidth of Office C + Office C's share of VoIP bandwidth = 100 Mbps + (90 Mbps * (100 Mbps / 540 Mbps)) ≈ 100 Mbps + 17 Mbps ≈ 117 Mbps
Therefore, the calculated bandwidth requirements for each office, considering the given parameters and requirements, are as follows:
Office A: Approximately 233 Mbps
Office B: Approximately 175 Mbps
Office C: Approximately 117 Mbps
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