COIT20261 Network Routing and Switching Assignment 1
Verified
Added on 2023/06/15
|7
|2180
|198
AI Summary
This assignment is for COIT20261 Network Routing and Switching course of Term 1, 2018. It covers basic routing concepts and tools like Wireshark, Netstat and Tracert. The questions contain numerical as well as descriptive questions covering the material up to Week 6.
Contribute Materials
Your contribution can guide someone’s learning journey. Share your
documents today.
COIT20261 Network Routing and Switching (Term 1, 2018) Assignment item —Written Assessment-1 Due date: 11:45pm AEST, Friday, Week 6 ASSESSMEN T Weighting:15%1 Objectives This assessment task requires you to demonstrate your knowledge of basic routing concepts by completing a number of exercise questions. The questionscontain numerical as well as descriptive questions covering the material up to Week 6. The questions are designed to help you to achieve the unit learning outcomes as listed in the unit profile. Instructions You must do this assignment on your own – it is not a group assignment. Type all your answers in the ‘Template for Your Answers’ Section of this document and upload only that template. You could do that by copying the Template section into a new Word document for uploading. Answers that are not typed into the “Template for Your Answers” section may not be marked, or may be returned to you for re-typing and re- submission – late penalties will apply. Where instructed, you must show the steps you took to arrive at your answers. Write your answersin your own wordsto avoid potential plagiarism and copyright violations. You must submit the Answer section as aWord file (.doc or .docx). Do not submit PDF’s or any other type of file without express permission from the Unit Coordinator. Plagiarism Procedures can be found in the CQUniversity Policies section of the Unit Profile. Assessment Requirements and Marking Criteria There are 3 main questions with some sub-questions and the requirements are stated for each one. You must answer all questions and their sub-questions. Marks are indicated in the Answer Template. The questions will be marked on correctness, logic and clarity, and addressing all parts of the question. The Assignment Questions begin on the next page. USE THE PROVIDED TEMPLATE ON P.4 FOR ALL YOUR ANSWERS.
Secure Best Marks with AI Grader
Need help grading? Try our AI Grader for instant feedback on your assignments.
COIT20261 Network Routing and Switching (Term 1, 2018) Assignment item —Written Assessment-1 Question 1 – Address usage(3 marks) Consider the following classless address block: 154.78.177.3/27 List the addresses from this block that would be used as: a)the network address, b)the direct broadcast address, and c)the range available for hosts to use Show the steps you took to arrive at your answers. Question 2– Allocating subnets from a block(8 marks) A company has been granted a block of addresses whichincludesthe address 138.77.216.5/24.Answer the following questions, showing your calculations. a)Calculate the network address of this block and how many host addresses including special addresses this block can provide (1 mark) b)Create the following 6 subnets for this company by calculating the subnet address for each subnet. Answer this question by filling in the table in the Answer template. Use CIDR format for the mask. I.2 subnets with 32 addresses each (2 marks) II.4 subnets with 16 addresses each (4 marks) c)After some time, the company decides that it wants another subnet with 1,024 addresses. Explain whether this can be allocated from the existing block. (1 mark) Question 3 – Network Tools(Windows)(4 marks) Often the best way to gain an initial familiarity with network tools is to simply use them, at a basic level in exploratory mode as suggested in some of the tutorial exercises. Netstat and Tracert are included in Windows, while Wireshark is free to download and install. Explore Wireshark, Netstat and Tracert, then complete this question. a)A wireshark scan has produced a packet capture, saved to a file named wireshark_capture01.pcapngand available on the Unit website. Download the file and open it in Wireshark, then answer these questions about the scan: i.Very briefly summarise in your own words the content in each of the three horizontal display windows in Wireshark (.5 mark) ii.In Frame 3, what brand of computer launched this scan and what was its IP address? State where this information is found (.5 mark) iii.Briefly explain the exchange event captured in frames 4 - 6 (.5 mark)
COIT20261 Network Routing and Switching (Term 1, 2018) Assignment item —Written Assessment-1 iv.Describe in your own words two specific network problems that a network administrator could use Wireshark for as a troubleshooting tool?(.5 mark) b)A ‘NETSTAT –aon’ command has given the output below (excerpted).Briefly describe each column heading, and the states LISTENING, ESTABLISHED and CLOSE_WAIT.(1 mark) Active Connections ProtoLocal AddressForeign AddressStatePID TCP10.0.0.58:1390.0.0.0:0LISTENING TCP10.0.0.58:50400.0.0.0:0LISTENING7480 TCP10.0.0.118:1390.0.0.0:0LISTENING4 TCP10.0.0.118:5245052.63.165.133:443ESTABLISHED14080 TCP10.0.0.118:52458104.116.191.195:443CLOSE_WAIT8912 TCP10.0.0.118:5279140.100.151.2:443ESTABLISHED22400 TCP10.0.0.118:52811162.125.34.129:443ESTABLISHED4696 TCP10.0.0.118:5282034.232.224.128:443CLOSE_WAIT4696 TCP10.0.0.118:52879162.125.34.129:443ESTABLISHED4696 ... c)Do a TRACERT on your computer to www.google.com. Paste the output to your assignment answer template and discuss the information being displayed (1 mark)
COIT20261 Network Routing and Switching (Term 1, 2018) Assignment item —Written Assessment-1 TEMPLATE FOR YOUR ANSWERS Type your answers in this section in the spaces provided First Name:_________________________Last Name:_________________________ Student ID: __________________________ Question NumberMark allocated Mark earned Question 1: (3 marks)3 a) b) c) Network Address Block – 154.78.177.3 / 27 The network address for the given block of address = 154.78.177.0 / 27 Calculation for finding the direct broadcast address for the given address block: 10011010.01001110. 10110001. 000 11111 154.78.177.31 The range of address available for the hosts = Starting IP address = 154.78.177.1 Ending IP address = 154.78.177.30 1 mark each item, total 3 Question 2: (8 marks)8 a) Given Address Block = 138.77.216.5 /24 Calculation of the block of network address is given below: Address block (Decimal notation) 10001010.01001101.11011000 .00000101 Subnet mask (Decimal Notation) 11111111.11111111.11111111 .00000000 Wild card mask (Decimal Notation) 00000000.00000000.00000000 .11111111 Network Address (Decimal Notation) 10001010.01001101.11011000 .00000000 = 138.77.216.0 /24 1 b)SubnetNo. addressesSubnet addressMask /n 132138.77.216.0/26 232138.77.216.64/26 316138.77.216.128/27 416138.77.216.160/27 6
Paraphrase This Document
Need a fresh take? Get an instant paraphrase of this document with our AI Paraphraser
COIT20261 Network Routing and Switching (Term 1, 2018) Assignment item —Written Assessment-1 516138.77.216.160/27 616138.77.216.0/26 c)If the requirement of the changes and number of hosts in each of the subnet is increased to 1024 numbers the current subnet used by the company would fail because in the subnet of mask /24 only 254 number of IP address can be allocated. Moreover the company have already 6 subnets and the required addresses are 128 and allocated size is 244. Thus the company needs to re calculate the subnet using different subnet mask. 1 Question 3: (4 marks)4 a) i) ii) iii) iv) There are three horizontal windows in the wireshark interface and each of the pane shows different information about the packets captured in the network. The first panel is used for creating a list of the packets captures from the network, the second panel displays the details of the packet captured when a particular packet from the first panel is selected and lastly the third panel is used for showcasing the raw data for the selected packet from the first panel of the captured packets. From the third frame of the packet captured the brand of computer can be identified and it is Hewlett with an IP address of 138.77.216.88. In the frame 4 and 6 different types of messages are sent between the server and the client for establishing the connection and sending and receiving data packets in the network. The server sends a hello message to the client to connect with it in the fourth frame, in the fifth frame the detailsoftheprotocol,ciphersuite,compressionmethodology, certificate and the session ID is shared with the client and in the sixth frame the ‘hello message done’ is sent from the server end for ending the verification. The wiresharknetwork analysistoolcan beusedby the network administrator for solving the following problem such as: Name resolution problem resolution and troubleshootingthe network devices for resolution of the problem Analysis of the current flow of data and protect the network from DoS attacks. .5 mark each item, total 2 for 3a. b) The Proto column is used for listing the TCP and the UDP protocols used in the active connections. The column named local address shows the IP address of the client with the port address separated with a colon to transmit data in the network. The Foreign address is lists the IP address and the port separated by the colon used by the destination machine. The State column shows the current state of the active 1
COIT20261 Network Routing and Switching (Term 1, 2018) Assignment item —Written Assessment-1 connections and it can be of three types such as listening, close_wait or Established. The process ID or PID column shows the process number and it can be used for finding the owner of the process and the program using the process. The listening state implies that the client host is waiting for outer host for establishment of a data connection. The established state implies that the client and the outer PC can send and receive data packets in the network and lastly close_wait state implies that client Pc and the remote host has already terminated the connection by the ARP table of the router has not yet been updated. c) Running the tracert command in the Pc followed by the url helps in identification of the path followed by the local host to reach the server configured with the host address ‘www.google.com’, currently 12 network devices are used for reaching the server and it includes the router with the IP address 192.168.0.1, gateway 115.96.128.1 and the targeted host server with the IP address 172.217.31.196. 1 Total marks awarded15 (max) Less late penalties if applicable Less plagiarism penalties if applicable Total marks earned Markers comments:
COIT20261 Network Routing and Switching (Term 1, 2018) Assignment item —Written Assessment-1 Bibliography Aranda, J., Carrillo, H. and Mendez, D., 2017, August. Enhanced multimodal switching mechanisms for node scheduling and data gathering in wireless sensor networks. InCommunications and Computing (COLCOM), 2017 IEEE Colombian Conference on(pp. 1-6). IEEE. Brown,P.N.andMarden,J.R.,2017.Studiesonrobustsocialinfluence mechanisms: Incentives for efficient network routing in uncertain settings.IEEE Control Systems,37(1), pp.98-115. Li, C., Mukerjee, M.K., Andersen, D.G., Seshan, S., Kaminsky, M., Porter, G. and Snoeren, A.C., 2017, May. Using indirect routing to recover from network trafficschedulingestimationerror.InArchitecturesforNetworkingand Communications Systems (ANCS), 2017 ACM/IEEE Symposium on(pp. 13-24). IEEE. Medhi, D. and Ramasamy, K., 2017.Network routing: algorithms, protocols, and architectures. Morgan Kaufmann. Misra,S.andGoswami,S.,2017.NetworkRouting:Fundamentals, Applications, and Emerging Technologies. John Wiley & Sons. Misra, S., Bera, S., Achuthananda, M.P., Pal, S.K. and Obaidat, M.S., 2017. Situation-AwareProtocolSwitchinginSoftware-DefinedWirelessSensor Network Systems.IEEE Systems Journal. Odom, W. and Wilkins, S., 2017. CCNA Routing and Switching ICND2 200- 105 Pearson uCertify Course, Network Simulator, and Textbook Academic Edition Bundle. Panchenko, I., Bakos, J.D. and Ginn, H.L., 2017, August. Control system communication architecture for power electronic building blocks. InElectric Ship Technologies Symposium (ESTS), 2017 IEEE(pp. 544-550). IEEE.