CSC8510 Student Assessment 2

CSC8510 Student Assessment 2 :

Total marks: 100

Question 1 (20 marks)

1. (10 marks) Why we need to specify IPv4 network mask as well as the IPv4 network address for a device?
2. (5 marks) Explain the meaning of /24 as an IPv4 network mask.
3. (5 marks) Comment on the meaning of IPv4 subnet mask “/0”?

Submit your answer to Question 1 as <studentIDQ1>.pdf (e.g. U123456Q1.pdf)

Question 2 (20 marks)

1. (6 marks) When delivering a packet, what are the roles of IPv4 address and the MAC address?
2. (14 marks) We use “country code / area code / home phone number” to specify a home phone. Explain why we can or cannot use a similar structure “country code / area code / device number” to specify the address of a PC.

Submit your answer to Question 2 as <studentIDQ2>.pdf (e.g. U123456Q2.pdf)

Question 3 (60 marks)

USQBook is a bookstore with 4 administrative sections. It has acquired the use of IPv4 network 200.200.200.2/32. The managers of each section have been assigned IPv4 addresses as shown:

Administration Section	Manager’s IP	Number of staff in the section
Finance	192.168.0.15	8
Marketing	192.168.0.90	32
Sales	192.168.0.191	32

1. (5 marks) Explain why you want to subdivide the network into subnets.
2. (5 marks) What is the number of assignable addresses in a smallest subnet? What is the use of such a subnet?
3. (20 marks) Show your design for the subnets using the following table:

Subnet
Section	Subnet Address	Mask length	Broadcast address	Gateway address	Number of assignable addresses
Finance
Marketing
Sales

• (30 marks) Implement the network using Packet Tracer 8.0.1. Make sure that all PCs can ping each other and devices on the Internet.
  • For convenience, you may
    • attach the IP address to the name of PCs
    • attach the subnet address and mask to the switch used by the LAN
    • attach the IP address of the interface used by the router to link to the subnet
  • Assume 192.168.0.0/24, 200.200.200.0/30, and 200.200.201.0/24 are globally routable.
  • Use one router (e.g. model 2911) as the gateway for all 3 subnets.
  • Use 200.200.200.1/30 as the address of RInt and 200.200.200.2/30 as the address for RF for the Internet link from RF.
  • Use 200.200.201.254 /24 as the addresses for RInt and 200.200.201.1/24 as the address for PCInt.)
  • Show at least the manager’s PC and one other PC for each subnet.
  • Link RF and RInt using a WAN Link.
  • Use Static routes and default route for routing between LAN Gateway and RInt.

Submit your answer to Q3 as <studentIDQ3>.pdf (e.g. U123456789Q3.pdf) and

<studentIDQ3>.pkt (e.g. U123456789Q3.pkt)

**** End of Assignment 2 ****

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