ICT IA4 Project Overview

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Questions and Answers

Which of the following is a characteristic of wifi?

Stable internet connection (correct)

Data is transferred in packets

Requires Bluetooth pairing

Large coverage area

Bluetooth technology requires internet access to transfer data between devices.

False

What does LAN stand for in networking?

Local Area Network

Through __________ technology, data can be transferred between devices without sending it via the internet.

Bluetooth Signup and view all the answers

Match the following networks with their descriptions:

LAN = Connects devices within a limited area WAN = Geographically distributed network Wi-Fi = Wireless local area networking Cellular = Large coverage area with mobile connectivity Signup and view all the answers

Which method is NOT mentioned as a way to ensure data security?

Data compression Signup and view all the answers

Errors in data transmission can only occur due to network issues.

False Signup and view all the answers

What might a mobile device do when switching networks during a data request?

Start using a cellular network and switch to Wi-Fi for better performance. Signup and view all the answers

Which part of a URL specifies the method for transferring data?

Protocol Signup and view all the answers

A DNS translates a URL into a domain name.

False Signup and view all the answers

What is the purpose of a DNS?

To translate a domain name into an IP address. Signup and view all the answers

Data sent over WiFi is first broken up into smaller ______.

packets Signup and view all the answers

Match the method of data transfer to its description:

Wired = Uses cables and provides reliable, high-speed connections WiFi = Transmits data wirelessly using radio waves Bluetooth = Short-range data transfer between devices Cellular = Connects devices using cell towers and is mobile-friendly Signup and view all the answers

What does a domain name represent?

A text string matched to an IP address Signup and view all the answers

Bluetooth can transmit data at speeds of up to 25gbps.

False Signup and view all the answers

What is the primary advantage of using wired connections for data transfer?

Speed, reliability, and security. Signup and view all the answers

Study Notes

ICT IA4

Project by Johan, Smaran, Sreejit and lan

Task 1: How a website is accessed when a user types a URL into a web browser
Task 2: How data travels over networks
Task 3: How data is kept secure from errors

Task 1: How a Website is Accessed

URLs (Uniform Resource Locators): Unique identifiers for resources on the internet, consisting of three parts:
- Protocol: Method for data exchange (e.g., https://)
- Domain Name: Text string linked to an IP address (e.g., www.google.com)
- Path: Location of a specific page/file (e.g., /areyoufeelinglucky)
DNS (Domain Name System): Acts as the internet's phone book
- Translates domain names into IP addresses, allowing computers to connect with servers.

Task 2: How Data Travels Over Networks

Data transmission through cables is converted into binary code (1s and 0s)
WiFi breaks data into smaller packets, translates them into bits, and routes them to their destination through routers and switches
Cellular data uses radio waves to connect to a nearby cell tower. Data is sent to a data centre then to the requested service and waits for a response
Bluetooth transmits data to another device using radio waves at 25mbps, operating at 2.45 ghz frequency, with a range of 10m
Data can travel through different types of networks like mobile data, WiFi, and internet service providers' (ISP's) networks. A single request can utilize multiple network types (e.g mobile data, LAN, and internet backbone connections to get to the final destination.)

Task 3: Keeping Data Secure from Errors

Ensuring secure and error-free data transmission requires several layers of safeguarding. This includes using a combination of:
- Encryption: Secure data encoding;
- Authentication: Verification of the sender and receiver;
- Error checking: Identifying and fixing potential issues;
- Secure network infrastructure: Robust systems and protocols
- Regular system maintenance: Proactive care for equipment and routines
Systems also adopt error correction methods to minimize the impact of errors from hardware failures or human mistakes.

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Description

Explore the fundamentals of how websites are accessed, data travels over networks, and data security in this ICT IA4 project by Johan, Smaran, Sreejit, and Ian. Understand the concepts of URLs, DNS, and packet data transmission for a comprehensive grasp of internet technologies.