User Account

All Pages

TCP/ ip, Computer Network Security

Assignment Help:
Q1 (15 marks, 5 marks each part):
This question has three parts:

In a short paragraph (200-300 words) explain the fundamentals of Packet Switching and how it works.
In a short paragraph (200-300 words) explain the fundamentals of Circuit Switching and how it works.
Using your own words, in a short paragraph (200-300 words) discuss and explain why packet switched networks are used for data communication instead of circuit switched.

Q2 (30 marks, 10 marks each group)
An ISP is granted a block of addresses starting with 110.50.0.0/16. The ISP needs to distribute these blocks to 2600 customers in the following three groups:

The first group has 200 medium-size businesses; each needs approximately 120 addresses.
The second group has 400 small-size businesses; each needs approximately 20 addresses.
The third group has 2000 households; each needs 6 addresses.
Design the sub blocks and give the slash notation for each sub block. Find out how many addresses are still available after these allocations. You need to show your working and math and explain how your achieved your sub-netting solutions. Write your subnets in a table like the following.

Group Number of Businesses Users per business Subnet (---.---.---.--- / ---) Number of remained usable addresses in the subnet
1 200 120
2 400 20
3 2000 6


Q3 (15 marks, 5 marks each question)
Using this diagram, answer the following routing questions:



A packet arrived at router R1-m2 with destination address 145.80.23.14. Explain how it is forwarded to its destination.
A packet arrived at router R2-m0 with destination address 170.14.24.12. Explain how it is forwarded to its destination.
A packet arrived at router R3-m0 with destination address 135.15.42.18. Explain how it is forwarded to its destination.
Q4 (28 marks, 14 marks each part)
A router with IP address 132.145.132.112 and Ethernet physical address of a1:a2:a3:a4:a5:a6 has received a packet for a host destination with IP address 152.111.178.110. The router does not know about the Ethernet physical address of the host. Assume the Ethernet address of the destination host is b1:b2:b3:b4:b5:b6 and the router is going to find it through and ARP request.

Show the entries in the ARP request packet sent by the router. Encapsulate this packet in a data link frame and fill all the fields.
Show the entries of the ARP packet sent in response to the packet in first part. Encapsulate this packet in a data link frame and fill all the fields.
Hint: Use example 8.1 as a template to explain your answer. Use the same drawing tradition to show your packets.


Q5 (12 marks, 4 marks each)
This question has three parts:

In a short paragraph (200-300 words), explain ICMP and why it is important.
In a short paragraph (200-300 words) explain “ping” and “traceroute” in UNIX --or “tracert” in Windows--, how they work and how they are different.
Show two screenshots of using ping and traceroure/tracert to address www.csu.edu.au. Pay attention to the delays and try to explain them.

Related Discussions:- TCP/ ip

Basic functions of e-mail system, B a s i c functions of e-mail system ...

B a s i c functions of e-mail system are given as follows: C o mp o sition refers to the procedure of creating messages and the answers. Though any text editor can be

Computer Security, I have an assignment of Computer Security to submit. Wil...

I have an assignment of Computer Security to submit. Will you guys help me making my assignment???

Ring topology, RING topology all computers are connected in loop. A ring ...

RING topology all computers are connected in loop. A ring topology is a network topology in which every node connects to exactly two other devices, forming a single continuous pa

Describe the functioning of cloud computing, Question 1:  Describe the ...

Question 1:  Describe the functioning of cloud computing. Question 2: Discuss on "Platform as a Service". Question 3: Discuss the steps involved in effective co

Categories of controls-risk management, Categories of Controls Controlli...

Categories of Controls Controlling risk through mitigation, avoidance or transference is accomplished by implementing controls. There are 4 effective approaches to select the co

Ping command , In the early days when there were some dozen computers machi...

In the early days when there were some dozen computers machine on the network, it was done individually but now as we have looked that there are millions of computers on the intern

Intercultural sensitivity: recognising differences, Intercultural sensitivi...

Intercultural sensitivity: recognising differences You represent a Mauritian computer company which is negotiating to buy hardware from a manufacturer in Japan. In your first

Application gateways / firewall-information security, Application Gateways ...

Application Gateways / firewall The application level firewall is installed on a dedicated computer; also called as a proxy server. These servers can store the recently accessed

Sending an arp message, Normal 0 false false false EN-U...

Normal 0 false false false EN-US X-NONE X-NONE

Kasonet pinging system, KASONet Pinging System: Project Title:       ...

KASONet Pinging System: Project Title:                                                           "KASONet Pinging System"   Brief Overview of Project: The o

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd