Your ISP has purchased the IP address range 99.5.255.0/18. Now answer the followings: (10 Points)

1. What is the network address assigned to your ISP?

2. What will be the broadcast address used by your ISP?

3. What is the maximum number of clients the ISP can sell their connections to?

4. What is the first usable IP address?

5. What is the last usable IP address?

B. Your company is using the IP address range 172.20.0.0/22. The company has five departments with the following number of hosts for each department: (10 * 5 = 50 Points) Accounting - 28 hosts Marketing - 60 hosts HR - 2 hosts Support - 120 hosts Quality Assurance - 10 hosts Subnet the network in such a way so that less number of IP addresses are wasted and answer the followings for each subnet, use CIDR notation:

1. What is the network address?

2. What is the broadcast address?

3. How many hosts are possible?

4. What is the first usable IP address?

5. What is the last usable IP address?

C. IP address is: 203.120.45.23 and subnet mask is: 255.255.255.192. Represent this information in CIDR format.

D. IP address for Device-A is: 172.255.17.30/21 and Device-B is: 172.255.31.30/21. Are these devices on the same subnet or on different subnets? What is/are the subnet address/addresses?