Question: NITC building had 4 research labs each having 24 computers. All labs are located at the 1st floor. Each computer is to be connected in the network from NCR located at 2nd floor. Prepare a bill of quality (BoQ) with necessary network resources required for complete networking. The BoQ must include estimation of all network resources required.

Physical devices requires:

1. Router
2. Switch
3. CAT 6 cable
4. RS-232 cable
5. PCs/Laptops/workstations
6. Server
7. Printer
8. IP phone
9. Wireless router (Access Point)

Specification sheet

Assumption:-

1. There are 1 server in 2nd floor
2. There are four printer n each lab and
3. One IP Phone in the 1st floor

Solution

Let us consider we are provided with a public address 110.100.50.0/24.

We need five subnets consisting of minimum 24, 24, 24, 24 IP for research lab and 5 IP for NCR respectively.

Initially given IP should be divided into two parts for two floors such that IP address for first floor is 100.100.50.0 /25 and that for second is 100.100.50.128 /25.

For 4 research lab in 1st floor Applying VLSM technique, Required no of host bit

2^x > 24 i.e. x = 5. Subnet mask = 255.255.255.224 So, subnets in first floor become

1. 100.100.50.0 /27 – 30 hosts
2. 100.100.50.32 /27 – 30 hosts
3. 200.100.50.64 /27 – 30 hosts
4. 100.100.50.96 /27 – 30 hosts

For 2nd floor (i.e. NCR):-

We need 5 IP from IP address 100.100.50.128/5

Applying VLSM technique, Required no. of host bit

2^x > 5 I.e. x=3. Subnet mask = 255.255.255.248 So, subnet in second floor become

1. 100.100.50.128/29 - 6 hosts

Network drawn in Cisco Packet Tracer 6.1 Student Version is shown below

2080 numerical and design question solution