networking question need to be solved

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Semester 2, 2018 FINAL EXAMINATION Page 1 of 29 HIT274 – Network Engineering Applications

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.

Charles Darwin University Final Examination

HIT274 – Network Engineering Applications

DURATION

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.

Do not commence writing until instructed to do so.

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

Family Name

Given Name/s

Student Number

Teaching Period Semester 2, 2018

Semester 2, 2018 FINAL EXAMINATION Page 2 of 29 HIT274 – Network Engineering Applications

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THIS EXAMINATION IS PRINTED

DOUBLE-SIDED.

THIS PAGE HAS BEEN INTENTIONALLY

LEFT BLANK.

Semester 2, 2018 FINAL EXAMINATION Page 23 of 29 HIT274 – Network Engineering Applications

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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 FE80:0000:0000:0000:0E00:0000:0000:0B1A

b 17:B20:80:F0C:8000:C0:985:5000

c FC12:00A8:2001:0000:0000:0000:0000:0DB9

(3 marks)

Question 2

Complete the table below

Address / length Prefix

a 9ADF:E00:0:50A:FACE:BAFF:FE00:0/80

b D1E1:F0:52E:D3F2:FACE:BAFF:FE00:0/88

c DEF4::CAFE:F0A0:BAFF:FE00:0/66

(3 marks)

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Question 3

Calculate the unabbreviated IPv6 address using EUI-64 rules for the following:

Prefix MAC Address Unabbreviated IPv6 Address

a 2001:DB8:1:1::/64 0013.ABAB.1001 b 2001:DB8:FE:FE::/64 0C0C.ABAC.CABA

(4 marks)

Question 4

Find the IP address/prefix combination that is the best summary route for the 4 IPv6 addresses

given below:

• 2001:DB8:ABCD:1::/64

• 2001:DB8:ABCD:2::/64

• 2001:DB8:ABCD:4::/64

• 2001:DB8:ABCD:3::/64

(4 marks)

Question 5

Explain what floating static routes are and their uses.

(4 marks)

Question 6

Compare the differences between NAT and PAT

(4 marks)

Semester 2, 2018 FINAL EXAMINATION Page 25 of 29 HIT274 – Network Engineering Applications

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Question 7

Given the IP address of 138.140.0.0/16, allocate IP address to the following groups using VLSM.

• Group A: 1000 users

• Group B: 300 users

• Group C: 150 users

• Group D: 40 users

• Group E: 4 users

Answer the following questions:

a. What is the last host address and subnet mask (in dotted decimal notation) of group A?

b. What is the first 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. What is the network address and subnet mask (in dotted decimal notation) of group E?

(8 marks)

Question 8

State three reasons why it is a good practice to configure passive interfaces on a router.

(3 marks)

Question 9

Explain the use of the following commands:

a. switchport port-security mac-address 0300.1111.1111

b. switchport port-security maximum 8

(2 marks)

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Question 10

Find IP addresses/ranges matching the following ACLs

Commands for ACL Answers

a access-list 1 permit 10.7.6.5

b access-list 2 permit 192.168.4.0 0.0.0.127

c access-list 3 permit 172.30.96.0 0.0.3.255

d access-list 4 permit 10.1.192.0 0.0.0.31

e access-list 5 permit 10.1.192.0 0.0.1.255

f access-list 6 permit 10.1.192.0 0.0.63.255

(6 marks)

Question 11

The legacy inter-VLAN routing is shown. Answer the following questions:

a. State what VLAN is and its uses.

b. What are the disadvantages of such a setup?

c. What is a better alternative? Draw diagram to illustrate.

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

(9 marks)

Semester 2, 2018 FINAL EXAMINATION Page 27 of 29 HIT274 – Network Engineering Applications

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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:

• The “show ip route” information for routers “Lvl1”, “Tech” and “Lvl2” are given. • Router “HQ” only has 2 active interfaces. • There are only 4 routers used for this topology. • IP addresses of some devices in the topology are also given

Router Lvl1

Semester 2, 2018 FINAL EXAMINATION Page 28 of 29 HIT274 – Network Engineering Applications

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Router Tech

Router Lvl2

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

Devices interface IP Mask Default gateway

PC0 f0 192.168.10.1 192.168.10.14

PC1 f0 192.168.10.17 255.255.255.240

PC2 f0 192.168.10.81

PC3 f0 255.255.255.240 192.168.10.113

Server g0

Router HQ

s0/0/0 255.255.255.240 -

g0/0 255.255.255.240 -

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.

(10 marks)

2. Complete the given table above.

(10 marks)