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COIT20261 | Assignment 1 Network Routing and Switching
April 20, 2018

COIT20261 Network Routing and Switching

BSBRSK501 Manage Risk Answers

COIT20261 Network Routing and Switching (Term 1, 2018)

Assignment item —Written Assessment-1

Due date: 11:45pm AEST, Friday, Week 6 ASSESSMENT
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 questions contain 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 answers in your own words to avoid potential plagiarism and copyright violations.

You must submit the Answer section as a Word 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.

 

Question 1 – Address usage                                                                          (3 marks)

Consider the following classless address block:

154.78.177.3/27

Listthe addresses from this block that would be used as:

 

  1. the network address,
  2. the direct broadcast address, and
  3. 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 whichincludes the address138.77.216.5/24.   Answer the following questions, showing your calculations.

  1. Calculate the network address of this block and how many host addresses including special addresses this block can provide (1 mark)
  2. 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.
    1. 2 subnets with 32 addresses each (2 marks)
    2. 4 subnets with 16 addresses each (4 marks)
  3. 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.

  1. A wireshark scan has produced a packet capture, saved to a file named pcapng and available on the Unit website. Download the file and open it in Wireshark, then answer these questions about the scan:
  2. Very briefly summarise in your own words the content in each of the three horizontal display windows in Wireshark (.5 mark)
  3. In Frame 3, what brand of computer launched this scan and what was its IP address? State where this information is found (.5 mark)
  • Briefly explain the exchange event captured in frames 4 – 6 (.5 mark)
  1. Describe in your own words two specific network problems that a network administrator could use Wireshark for as a troubleshooting tool? (.5 mark)

 

  1. 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 Address       Foreign Address      State         PID

 

TCP    10.0.0.58:139          0.0.0.0:0              LISTENING

TCP    10.0.0.58:5040         0.0.0.0:0              LISTENING       7480

TCP    10.0.0.118:139         0.0.0.0:0              LISTENING       4

TCP    10.0.0.118:52450       52.63.165.133:443      ESTABLISHED     14080

TCP    10.0.0.118:52458       104.116.191.195:443    CLOSE_WAIT      8912

TCP    10.0.0.118:52791       40.100.151.2:443       ESTABLISHED     22400

TCP    10.0.0.118:52811       162.125.34.129:443     ESTABLISHED     4696

TCP    10.0.0.118:52820       34.232.224.128:443     CLOSE_WAIT      4696

TCP    10.0.0.118:52879       162.125.34.129:443     ESTABLISHED     4696

 

  1. 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)

 

TEMPLATE FOR YOUR ANSWERS

Type your answers in this section in the spaces provided

 

First Name:_________________________  Last Name:_________________________

Student ID: __________________________

 

Question Number Mark

allocated

Mark earned
Question 1: (3 marks) 3
a)

 

b)

 

c)

 

 

 

 

1 mark each item, total 3

 

 

 

Question 2: (8 marks) 8
a)  

 

1
b)
Subnet No. addresses Subnet address Mask /n
1 32    
2 32    
3 16    
4 16    
5 16    
6 16    

 

 

6
c)  

 

1
Question 3: (4 marks) 4
a)

i)

 

ii)

 

iii)

 

iv)

 

 

 

 

 

 

 

 

 

.5 mark each item, total 2 for 3a.
b)  

 

 

1
c)

 

 

 

 

 

 

 

1
Total marks awarded 15 (max)
Less late penalties if applicable
Less plagiarism penalties if applicable
Total marks earned

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