Organization Network Infrastructure

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Semester 2, 2020 FINAL EXAMINATION Page 1 of 5

HIT372 – Organisation Network Infrastructure

Charles Darwin University

Final Examination

HIT372 – Organisation Network
Infrastructure

DURATION

Reading Time: 15 minutes

Writing Time: 1

20 minutes

Scanning and
uploading:

20 minutes

INSTRUCTIONS TO CANDIDATES

1. Read all questions carefully.
2. Answer all questions.
3. Total marks available on this test are 100.
4. Questions are (not) of equal value.
5. Open book exam.

EXAM CONDITIONS

You may begin writing from the commencement of the examination session. The reading time indicated above is
provided as a guide only. Please make sure that you submit your work on time.

This is an OPEN BOOK examination

Family Name

Given Name/s

Student Number

Teaching Period Semester 2, 2020

Semester 2, 2020 FINAL EXAMINATION Page 2 of 5
HIT372 – Organisation Network Infrastructure

(Marks: 2.5)

(Marks: 3.0)

Section A

Short Answer Questions

Total No of Marks for this section: 50

Marks for each question are indicated. Suggested time allocation for Section A: 70 mins

Question 1

(a) We know ARP is critical to Name Resolution. Briefly explain how ARP works. (Marks: 2.0)

(b) As a Network Administrator it is imperative for you to keep the network secure from outside threats
at all times. In this regard, describe how Network Access Protection (NAP) ensures network safety.

Question 2

(a) IP Transitioning technologies are critical till we fully transform from IPv4 to IPv6. Briefly illustrate
how Teredo and 6to4 frameworks operate. (Marks: 5.0)

(b) Shorten the IPv6 address using Zero Compression and Zero Suppression:

4501:f000:0000:0000:09ab:0000:0000:cfa5

Question 3

(a) IPSec has become an important technology in securing data transmitted through technologies like
VPN. Describe the 5-step process of IPSec in detail. (Marks: 5.0)

Question 4

(a) DHCP is a technology that greatly automates the management of IP addresses. Write down the
difference between DHCP address reservation and DHCP address exclusion.

(Marks: 3.0)

(b) Compare the two IP addresses using the given mask. Are they in same subnet?

First IP Address Second IP Address Mask Same Subnet?

192.168.1.25 192.168.1.250 255.255.255.192

193.195.165.30 193.195.2.5 /26

(Marks: 2.5)

Semester 2, 2020 FINAL EXAMINATION Page 3 of 5
HIT372 – Organisation Network Infrastructure

(Marks: 1.5)

Question 5

(a) DNS Zones are the key administrative boundaries in a network. Write down four major advantages
of using Active Directory Integrated Zones over straightforward Primary Zones. (Marks: 3.0)

(b) Write down 3 differences between Static and Dynamic routing.

Question 6

(a) Illustrate all the steps involved in the DHCP Address Renewal process. (Marks: 5.0)

(b) Write briefly about MX Records and SRV Records. (Marks: 3.0)

Question 7

(a) As we know Active Directory Directory Services (AD DS) consists of several services that run on ows

Windows Server to manage various administrative functions, briefly explain three useful purposes of using

using Active Directory in your network. (Marks: 4.5)

(b) Using Windows Event Viewer, users can view the event logs on a local or remote machine. Explain which

any three (3) of the most important events that are logged by Event Viewer. (Marks: 3.0)

Question 8

(a) Virtual Private Networks (VPN) have been proven to be extremely useful especially in modern
times when remote working is a reality. What are some important benefits of using VPN?

(Marks: 2.5)

(b) Write a short note on: (Marks: 4.5)

• Automatic Private IP Addressing

• Tracert

• Virtualization

Semester 2, 2020 FINAL EXAMINATION Page 4 of 5
HIT372 – Organisation Network Infrastructure

Section B

Network Solutions
Total No of Marks for this section: 50

Marks for each question are indicated. Suggested Time allocation for Section B: 50 mins

Question 1

You work in a local NT based IT company which is named DarwinTech. As a network administrator you need

to chop the whole network into 4 subnets such that each subnet may have a maximum 16 usable hosts IP.
Given the network address:

Network address: 172.170.50.0 / 23

(a) Complete the table with IP range for each subnet IP.

Subnet

Subnet

Address using

CIDR

Notation

First Valid Host

Address using CIDR

Notation

Last Valid Host

Address using CIDR
Notation

1

2

3

4

(Marks: 10.0)

(b) You are asked again to have another 2 sub-subnets in subnet 5. What will be the new address for the computers

in subnet 6?

Sub-

Subnet

Subnet Address using

CIDR Notation

First Valid Host
Address using
CIDR Notation
Last Valid Host
Address using
CIDR Notation
1
2

(Marks: 5.0)

Semester 2, 2020 FINAL EXAMINATION Page 5 of 5
HIT372 – Organisation Network Infrastructure

Question 2

As a Network Administrator for DarwinTech, you have been tasked with designing an Active Directory

based network which uses Active Directory Integrated DNS. The company has 4 separate departments –

Development, Testing, Management and Finance. Each of these departments have its own logical

boundaries and an IT Admin from each department is given some responsibilities of managing day to day

IT issues specific to that department. Management and Finance have around 15 Workstations each with

15 users. The company also has 1 Printer and 2 File Servers which are shared only by Finance and

Management. Development and Testing divisions have its own Printer on top of 12 workstations for 12

users. However, any of the 2 printers can be shared between all the departments in case any 1 of the

printer is down.

Task 1: Describe in detail how the above scenario can best be implemented and provide logical

explanation in each of the steps for your chosen design. You can add diagrams (clear and precise) to

convey your ideas. (Marks: 10.0)

Task 2: If DarwinTech decides to open three more branch offices in New Zealand and Middle East and

Africa, with the Head Office located as is in Darwin, what can be done so that both the branch offices are

placed under Head Office, with separate security and policy requirements of their own? Draw a diagram

showing a possible network configuration with appropriate naming. (Marks: 5.0)

Question 3

You have to assign IPv4 addresses to 225 workstations automatically in a Windows Server 2016

environment. Several conditions, as outlines below, need to be considered. State with as much clarity as

possible on how you will achieve the following configuration in a Windows Server 2016 environment.

Task 1: Which technology will you be using for automatic IP Address assignment for a subnet of

192.168.5.10/24? Write in detail how you will setup the configuration. The addresses will be valid for 38

Hours, and generally have to be renewed after that period. Besides, certain range of addresses, such as

192.168.5.12-192.168.5.15 and 192.168.5.17-192.168.5.19 are reserved for different purposes and you

will have to leave these out while you set up the automatic address configuration. How will you achieve

that? Explain in detail with the required configuration. (Marks: 10.0)

Task 2: The network has a File Server that will always have the fixed address 192.168.5.150 handed out

to it during the automatic address assignment each time, how will you ensure that? Explain in detail with

the required configuration. You also want to make sure backup servers are available in case the primary

server responsible for the address assignment fails. Write down the steps required to set up such policy.

You also need to ensure that while both the servers (primary and backup) are operational, one may be

kept idle and can become active only when the other DNS server fails. (Marks: 10.0)