Computer Networking

Transport Layer

Questions of Classful IP Addressing

Question is that if given IP address = then find out the following parts

Part 1: Find the Class of given IP?

Solution: As the first Octet of given IP address exist in between the range of Class C (192 – 223). So, given IP belongs to class C.

Part 2: Find the Subnet Mask of given IP?

Solution: After checking the class of given IP. Subnet mask can be found by putting all octet-bits of network ID to “255” and Host bits to “0”. So, Class C subnet mask is

Part 3: Find the Network ID?

Solution: To find network ID, Perform AND operation of given IP with Subnet mask in binary. It will provide the network ID where that particular IP exist. So network ID will be

Part 4: Find First and Last IP address of given Network IP?

Solution: We know that there are two IP’s of each network are reserved. As the Network ID is So, the first IP address will be which is reserved for network identification. And Last IP address is which is reserved for direct broadcasting.

Part 5: Find first and Last Host ID of given Network IP?

Solution: Due to reservation of two Hosts, of Network ID is So, the first host IP address will be and Last host IP address is

Part 6: Find the Limited broadcast IP addressing?

Solution: By replacing all octets of IP address to 255 (decimal) is called Limited broadcast IP addressing. So, Limited broadcast address =

Part 7: Find the Direct broadcast IP addressing?

Solution: By replacing the Host-bits-octets to 255 of given IP is called direct broadcast IP addressing. So, direct broadcast IP addressing =


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