EX02801_HIT274_2F_16_PartBC.docx

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(
Semester 2, 2016
FINAL EXAMINATION
DURATION
HIT274 – Network Engineering Applications
Teaching Period
Student Number
Given Names
Family Name
Reading

Time:
10

minutes
Writing

Time:
180

minutes
)

INSTRUCTIONS TO CANDIDATES

The examination has 3 sections

Section A:

Suggested Time:

Multiple Choice Questions: Answer ALL questions
45 minutes (30 marks)

Section B:

Suggested Time:

Short Answer Questions: Answer ALL questions
95 minutes (50 marks)

Section B:

Suggested Time:

Case Study: Answer ALL questions
40 minutes (20 marks)

Questions in section A must be answered directly onto the Examination Paper. Section B and C are to be answered in the booklets provided.
Note that questions ARE NOT of equal value.

EXAM CONDITIONS

You may begin writing from the commencement of the examination session. The reading time indicated above is provided as a guide only.
This is a CLOSED BOOK examination No calculators are permitted
No handwritten notes are permitted No dictionaries are permitted

ADDITIONAL AUTHORISED MATERIALS

EXAMINATION MATERIALS TO BE SUPPLIED

No additional printed material is permitted

1 x 16 Page Book 1 x Scrap Paper

(
THIS EXAMINATION PAPER AND SUPPLIED MATERIALS ARE NOT PERMITTED TO BE REMOVED FROM ANY EXAMINATION VENUE IN ANY CIRCUMSTANCE. THIS EXAMINATION IS PRINTED DOUBLE-SIDED.
)

Semester 2, 2016 FINAL EXAMINATION

HIT274 – Network Engineering Applications

Page 1 of 10

THIS EXAMINATION IS PRINTED DOUBLE-SIDED.

THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.

Semester 2, 2016 FINAL EXAMINATION

HIT274 – Network Engineering Applications

Page 2 of 10

Section A Multiple Choice Questions
Total No of Marks for this section: 30
This section should be answered directly into this booklet by placing an X next to your chosen answers. Please ensure that your name and student number have been written on this booklet.

Each question is worth 1 mark.

Suggested Time allocation for Section A: 45 mins

Semester 2, 2016 FINAL EXAMINATION

HIT274 – Network Engineering Applications

Page 3 of 10

Section B

Short Answer Questions

Total No of Marks for this section: 50
This section should be answered in the Answer Booklet provided.
Marks for each question are indicated.
Suggested Time allocation for Section B: 95 mins

Question 1
Complete the table below:

Full IPv6

Abbreviated IPv6

a

FE80:0000:0000:0400:0000:0000:0000:054A

fe80:0:0:400::54a

b

4:b200:80:f0a:5000:c:885:a000

4:B200:80:F0A:5000:C:885:A000

c

0C00:00B8:2001:0000:0000:0000:0000:0DB8

c00:b8:2001::db8

(3 marks)

Question 2
Complete the table below

Address / length

Prefix

a

4EDF:400:0:50A:FACE:BAFF:FE00:0/96

b

D001:F0:E:D3F2:FACE:BAFF:FE00:0/72

c

D234::CAFE:F0A0:BAFF:FE00:0/62

(3 marks)

Semester 2, 2016 FINAL EXAMINATION

HIT274 – Network Engineering Applications

Page 4 of 10

Question 3

a. What is the summary route to reach HQ LANs?
b. What is the summary route to reach Branch1 LANs?
c. What is the summary route to reach Branch2 LANs?
d. What is the summary route from the ISP router to reach all LANs?
(8 marks)

Question 4
Given the IP address of 138.152.192.0/22, allocate IP address to the following groups using VLSM.
· Group A: 600 users
· Group B: 400 users
· Group C: 200 users
· Group D: 50 users
· Group E: 4 users
Answer the following questions:
a. What is the last usable host address and subnet mask (in dotted decimal notation) of group A?
b. What is the first usable host address and subnet mask (in dotted decimal notation) of group C?
c. What is the broadcast address and subnet mask (in dotted decimal notation) of group D?
d. How many unallocated addresses are there?

(8 marks)

Semester 2, 2016 FINAL EXAMINATION

HIT274 – Network Engineering Applications

Page 5 of 10

Question 5

When do you use static routing?

(3 marks)

Question 6

Write down two advantages and two disadvantages of static routing.

(4 marks)

Question 7

The legacy inter-VLAN routing is shown. Answer the following questions:
a. What are the disadvantages of such a setup?
b. What is a better alternative? Draw diagram to illustrate.

c. What additional configurations are needed for such alternative setup?

(6 marks)

Question 8

State why it is a good practice to configure passive interfaces

(3 marks)

Semester 2, 2016 FINAL EXAMINATION

HIT274 – Network Engineering Applications

Page 6 of 10

Question 9
Explain the use of the following commands:

a. switchport port-security
b. switchport port-security maximum
(2 marks)

Question 10

Compare the differences between NAT and PAT.

(4 marks)

Question 11

This network is meant to have the following three policies implemented:
· Hosts from the 192.168.0.0/24 network are unable to access any TCP service of Server3

but should not be otherwise restricted
· Hosts from the 10.0.0.0/8 network are unable to access the HTTP service of Server1 but should not be otherwise restricted
· Hosts from the 172.16.0.0/16 network are unable to access the FTP service of Server2

but should not be otherwise restricted Part of the running configuration for R1 is shown.

Semester 2, 2016 FINAL EXAMINATION

HIT274 – Network Engineering Applications

Page 7 of 10

Can you state the problems with the given configurations and suggest what can be done to rectify the problems?
(6 marks)

Semester 2, 2016 FINAL EXAMINATION

HIT274 – Network Engineering Applications

Page 8 of 10

Section C Case Study
Total Number of Marks for this section: 20
This section should be answered in the Answer Booklet provided.

Marks for each question are indicated.

Suggested Time allocation for Section C: 40 mins

A topology is set up with some information given below:
· The “show ip route” information for router 2 and router 3 are given.
· There are only 3 routers in this topology.
· IP addresses of some devices in the topology are also given
Router 2

Router 3

Semester 2, 2016 FINAL EXAMINATION

HIT274 – Network Engineering Applications

Page 9 of 10

The information about some of the devices is shown in the table below:

Device

Interface

IP Address

Subnet Mask

Default Gateway

Router 1

G0/0

N/A

S0/0/0

172.16.3.1

N/A

S0/0/1

192.168.10.5

N/A

Router 2

G0/0

172.16.2.1

255.255.255.0

N/A

S0/0/0

N/A

S0/0/1

192.168.10.9

N/A

Router 3

G0/0

192.168.1.1

255.255.255.0

N/A

S0/0/0

192.168.10.6

N/A

S0/0/1

N/A

PC1

NIC

255.255.255.0

172.16.1.1

PC2

NIC

255.255.255.0

PC3

NIC

192.168.1.2

255.255.255.0

1. Based on all the given information, draw the topology of the setup, clearly identifying the LANs, the type of cable used and the connections between the routers. The IP address and the prefix for each network are to be shown clearly in the diagram.
(8 marks)

2. Complete the given table above.
(7 marks)

3. What would be the path taken by a ping from
a. PC 1 to PC 3? Would it be different if RIP was configured instead?
b. PC 2 to PC 3? Would it be different if RIP was configured instead?
(5 marks)

Semester 2, 2016 FINAL EXAMINATION

HIT274 – Network Engineering Applications

Page 10 of 10

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