LAB 2.3 Calculating subnets either by calculating or by use of subnet calculator

Question

LAB 2.3 Calculating subnets either by calculating or by use of subnet calculator

1.     Given an IP address of 193.10.10.0, answer the following questions if the number of subnets created is four. (Hint-Borrowing 3 bits from host field of address - 4th octet)

a.     Determine the network address and the broadcast address for each subnet in the table that follows.

                             Starting Address                                                    Ending Address

_____________________________________________________________________________

1st subnet

2nd subnet

3rd subnet

4th subnet

______________________________________________________________________________

b.     Determine the subnet mask

c.     Determine the number of usable hosts per subnet.

2.     Given a network IP address of 211.123.83.0, answer the following questions if eight subnets are to be created. The eight subnets include the network and broadcast address.   (Hint. Borrowing 4 bits from host portion of address – 4th octet)

a.     Determine the network address and the broadcast address for each subnet in the following table

                             Starting Address                                                    Ending Address

_____________________________________________________________________________

1st subnet

2nd subnet

3rd subnet

4th subnet

5th subnet

6th subnet

7th subnet

8th subnet

______________________________________________________________________________

b.     Determine the subnet mask

c.     Determine the number of hosts per subnet

Explanation / Answer

Ans 1:

a)

b) Subnet Mask:

Borrow 3 bits:

Subnets = 23 = 8

Subnet Mask = 3 bits = 128+64+32 = 224 => 255.255.255.224

c) Number of host per subnet: 32 hosts

Ans 2:

a)

b) Subnet Mask:

Borrow 4 bits

Subnets = 24 = 16

Subnet Mask: 4 bits = 128+64+32+16 = 240 => 255.255.255.240

c) Number of hosts per subnet: 16 hosts

Network Address Starting Address Ending Address Broadcast Address 1st Subnet 193.10.10.0 193.10.10.1 193.10.10.30 193.10.10.31 2nd Subnet 193.10.10.32 193.10.10.33 193.10.10.62 193.10.10.63 3rd Subnet 193.10.10.64 193.10.10.65 193.10.10.94 193.10.10.95 4th Subnet 193.10.10.96 193.10.10.97 193.10.10.126 193.10.10.127

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