Podcast
Questions and Answers
Which of the following is a characteristic of wifi?
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.
Bluetooth technology requires internet access to transfer data between devices.
False (B)
What does LAN stand for in networking?
What does LAN stand for in networking?
Local Area Network
Through __________ technology, data can be transferred between devices without sending it via the internet.
Through __________ technology, data can be transferred between devices without sending it via the internet.
Match the following networks with their descriptions:
Match the following networks with their descriptions:
Which method is NOT mentioned as a way to ensure data security?
Which method is NOT mentioned as a way to ensure data security?
Errors in data transmission can only occur due to network issues.
Errors in data transmission can only occur due to network issues.
What might a mobile device do when switching networks during a data request?
What might a mobile device do when switching networks during a data request?
Which part of a URL specifies the method for transferring data?
Which part of a URL specifies the method for transferring data?
A DNS translates a URL into a domain name.
A DNS translates a URL into a domain name.
What is the purpose of a DNS?
What is the purpose of a DNS?
Data sent over WiFi is first broken up into smaller ______.
Data sent over WiFi is first broken up into smaller ______.
Match the method of data transfer to its description:
Match the method of data transfer to its description:
What does a domain name represent?
What does a domain name represent?
Bluetooth can transmit data at speeds of up to 25gbps.
Bluetooth can transmit data at speeds of up to 25gbps.
What is the primary advantage of using wired connections for data transfer?
What is the primary advantage of using wired connections for data transfer?
Flashcards
Local Area Network (LAN)
Local Area Network (LAN)
A network that connects devices within a limited area, such as your home or office.
Wide Area Network (WAN)
Wide Area Network (WAN)
A large network that spans a wide geographical area, like the internet, connecting users and devices across the globe.
Bluetooth
Bluetooth
A communication technology that enables wireless data transfer over short distances, commonly used for connecting devices like headphones, speakers, and smartphones.
Encryption
Encryption
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Authentication
Authentication
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What is a URL?
What is a URL?
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Error-checking protocols
Error-checking protocols
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What is a protocol in a URL?
What is a protocol in a URL?
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Data Security
Data Security
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What is a domain name in a URL?
What is a domain name in a URL?
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Data Integrity
Data Integrity
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What is a path in a URL?
What is a path in a URL?
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What is a DNS?
What is a DNS?
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What is an IP address?
What is an IP address?
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How is data sent over networks?
How is data sent over networks?
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What is a router?
What is a router?
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Study Notes
ICT IA4
- Project by Johan, Smaran, Sreejit and lan
Table of Contents
- 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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