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The following diagram illustrates a computer network with host IP addresses and network IDs. How many networks in the overall system? List addresses of all (sub)networks. What is the subnet mask? Then sending a packet from A to E, what is the routing method involved? Explain process work.
Expert Answer
there are 3 networks as you can see
Network 1: 210.20.30.[00xxxxxx]
Network 2: 210.20.30.[01xxxxxx]
Network 3: 210.20.30.[11xxxxxx]
So the subnet mask = 255.255.255.192 (192 for most significant 2 bits of 8 bit address space after last dot)
send packet from A to E will involve:
A to Subnet router (C) of Network 2, then from subnet router to E
So the route is:
A —> C —> E
