ABC corp. is a major multinational drug manufacturer. Company is headquartered in New York. Company also has two regional offices located in Houston and Los Angeles, European HQ is located in London and Asian HQ is located in Singapore. Current number of employees/devices in each location as follows:

New York.... 8,100

Houston... 1,750

Los Angeles...3,950

London......1,020

Singapore....3,560

 

All locations are using Class-A private IP address. NAT and PAT protocols on the routers are translating private IP address to registered public IP address. Assigned Network ID is 10.0.0.0

Using VLSM (Variable Length Subnet Mask) method, you need to accomplish the following task for each network:

• Calculate custom subnet mask based on the number of hosts
• Subnet ID and the range of valid IP addresses that can be assigned