Question

b. explain three reasons for choosing this computer over others mentioned in question 1a. (2 marks)\
explain the main difference between data quality and data integrity. (2 marks)\
question 2\
research what is meant by blockchain technology and how it could revolutionize data security and privacy in future smart - devices. (2 marks)\
describe how the internet works, based on the following.\
i. data transmission\
ii. networking hardware\
iii. connection types\
iv. ip addresses and dns (2 marks each)\
question 3\
explain how data is transmitted over the internet using tcp/ip protocols. (5 marks)\
explain why without an ip we would be unable to connect to the internet. (3 marks)\
note!!!

Explanation:

1. For the first part of Question 1: Reasons for choosing a computer could be performance (e.g., faster processor for quicker task - completion), build quality (durable materials for longer lifespan), and compatibility (works well with existing software and hardware). The main difference between real - time and augmented reality could be that real - time reality shows the actual environment as it is, while augmented reality overlays digital information onto the real - world view.
2. For Question 2: Blockchain technology is a decentralized, distributed ledger that records transactions across multiple nodes. In future smart devices, it could revolutionize data security and privacy by providing a tamper - proof way of storing and sharing data. For the sub - parts:

• Data Transmission: It is the process of sending digital information from one device to another over a network.
• Networking Hardware: Devices like routers, switches, and modems that facilitate communication between different devices on a network.
• IP Addresses and DNS: IP addresses are unique numerical identifiers for devices on a network. DNS (Domain Name System) translates human - readable domain names into IP addresses.

1. For Question 3: TCP/IP protocols break data into packets, add headers for addressing and control information, and send them over the network. Routers direct these packets to their destination. Without an IP, there would be no unique way to identify a device on the network, so data could not be routed to the correct destination, making internet connection impossible.

Answer:

1. Question 1:

• Three reasons for choosing a computer: Performance (faster processing), build quality (durable), compatibility (with existing software).
• Main difference between real - time and augmented reality: Real - time shows actual environment, augmented reality overlays digital info.

1. Question 2:

• Blockchain technology: Decentralized, distributed ledger for transactions. In smart devices, can enhance data security and privacy.
• i. Data Transmission: Sending digital info between devices over a network.
• ii. Networking Hardware: Routers, switches, modems for network communication.
• iii. IP Addresses and DNS: IPs are device identifiers, DNS translates domain names to IPs.

1. Question 3: TCP/IP breaks data into packets, adds headers, and routers direct them. Without IP, no device identification, no internet connection.