Question

A router receives a packet with the destination address 201.24.67.32.Show how the router finds the network address of the packet

Answer 1

A router receives a packet with the destination address 201.24.67.32. To find the routers network address of the packet:

• Routers in the internet needs to known the network mask to extract the network address from the destination address of a packet.
• A network mask is a 32-bit number with n leftmost bits all set to 1s and (32-n) rightmost bits all set to 0s.
• Network address is the first address in the block and also important because it is routing to destination address.
• To get Network address we should do destination address AND with network mask ,therefore network address of 201.24.67.32 is 1100100100011000010000110000000 ie..,201.48.131.0.