RMIT Classification: Protected
COSC2737 IT Infrastructure and Security
Assignment 2 20
Task 1 10 marks
1. How can quantized errors and CRC checksums impact the performance of an IT service? What measures are taken to handle the errors to ensure optimal system performance? 3 marks
2. Explain the processing that occurs within a router. How it determines whether a packet should be sent internally or externally to a subnetwork? 3 marks
3. Referring to the figure below, explain how to separate the higher layer protocols and the lower layer protocols. 2 marks
4. How the transport layer and network layer complements each other to provide data transmission between a service provider and the clients? 2 marks
Figure 1 TCPIP layered structure for data transmission
RMIT Classification: Protected
Task 2 10 marks
Optus customer database was hacked in September 2022, as a result, 10 million
Investigate the data leakage of Optus customers, and discuss the following questions:
1. Discuss how a password can be hacked? Explain how a strong password works for prevention of identity fraud in online applications? What additional authentication methods do banks use to protect online payments? 3 marks
2. Provideanexampleofthepotentialconsequenceofaphoneandemailbeing hacked? What advice can you give other than a strong password for preventing to be a victim of cyberattack. 2 marks
3. When you register an account with Optus,
will be stored in the backend server. Write an essay in less than 400 words to
include: 5 marks
Explain the process and list three technologiesprotocols associated with user registration start from clicking the registration page until the data being stored at the backend server.
How your identity is authenticated when you request a service? How a hacker may gain access to your account?
How the data from all the registered users is managed? What technology can help to prevent identity theft? How does this technology work?
customers data was stolen, including names, birthdates, home addresses, phone
and email contacts, passport and driving licence numbers. Media says that payment
details and account passwords were not compromised.
https:www.bbc.comnewsworldaustralia63056838
names, birthdates, home
addresses, phone and email contacts, passport or driving licence numbers