Design Practice Question

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:

Router
Switch
CAT 6 cable
RS-232 cable
PCs/Laptops/workstations
Server
Printer
IP phone
Wireless router (Access Point)

Specification sheet

S. N.	Item Description	Quantity	Units	Summary specification
1.	CAT-6 UTP cable	100	pcs	4-pair pure copper conductor PVC jacketed Foiled/UTP cable with TIA standard color 23 AWG and having tested frequency range of 250-550 MHz, Support up to 1000Base-T at 100 meters
2.	PCs/Computer	96	pcs	Varying specification
3.	Router	1	pcs	Cisco 2901
4.	Access Point	4	pcs	150Mbps Wireless N Router; 2.4- 2.4835GHz
5.	Switch	5	pcs	Cisco 2950-24
6.	Printer	1	pcs	Varying specs
7.	IP Phone	1	pcs
8.	RS-232 cable	1	pcs

Assumption:-

There are 1 server in 2nd floor
There are four printer n each lab and
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

100.100.50.0 /27 – 30 hosts
100.100.50.32 /27 – 30 hosts
200.100.50.64 /27 – 30 hosts
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

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

PRACTICE QUESTION WITH SOLUTION

Design Practice Question