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

Computer security, For this assessment, students must research and analyse ...

For this assessment, students must research and analyse two different scenarios. The two scenarios must be chosen from those described below and submitted as one Microsoft PowerPoi

Ids response behavior, IDS RESPONSE BEHAVIOR Once IDS detects an anomalo...

IDS RESPONSE BEHAVIOR Once IDS detects an anomalous network situation, it has a number of options. IDS responses to external stimulation can be classified as active or passive.

What type of rfid tag is more appropriate for ws-pass, Consider the followi...

Consider the following case study: In order to avoid criticisms of their existing manned road-toll payment system on its private road, WS-Pass has decided to adopt an automated

Determine the round trip time, a) determine the RTT (round trip time) betwe...

a) determine the RTT (round trip time) between a client requesting a web page of 1024 bytes in size from an internal web server on a 100 Base-T Ethernet. Assume a one-way propagati

Explain authentication process in a synchronous token system, Question: ...

Question: (a) Explain briefly the PCI Control Objectives which enterprises must meet to be compliant with the Payment Card Industry Data Security Standard (PCI DSS). Specify a

Ring topology, RING TOPOLOGY In this topology of network the devices a...

RING TOPOLOGY In this topology of network the devices are connected to each other in packed loop. In this network first computer passes data packet to the second and then seco

Emerging threats related to use of networks, Question requires you to submi...

Question requires you to submit a proposal based on the research report topic you will be addressing in the second assignment.  Note:  before commencing research on the topic, y

Who are the individuals who cause these security problems, Who are the indi...

Who are the individuals who cause these security problems? Many unauthorized people who cause network security problems for obtaining information about the other users and causi

Matrix transposition cipher, code and logic

code and logic

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