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Questions and Answers
What is the primary function of a File Transfer Protocol (FTP)?
What is the role of an Internet Service Provider (ISP)?
What is the main function of a router?
What is the main difference between wireless and broadband internet connections?
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What is the purpose of a modem in a dial-up internet connection?
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What is the term for the main connecting data routes between large networks on the internet and smaller networks in local regions?
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What is the primary function of a Point of Presence (POP)?
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What is the purpose of the Internet Protocol (IP)?
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What is the Transmission Control Protocol (TCP) responsible for?
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What is a network?
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What is the World Wide Web?
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What is the function of a packet in the context of the internet?
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Study Notes
File Transfer Protocol (FTP)
- A standard protocol that allows files to be transferred over a TCP network
- Used to download programs from other servers and upload web pages to a hosting server on the internet
Internet Service Provider (ISP)
- A cost-effective gateway for people and organizations to access the internet
- Provides additional services such as email, website development, technical support, and troubleshooting
- Examples include BT, Virgin Media, and Sky
Internet Infrastructure
- A huge client-server system of interconnected computers that uses a wide range of hardware
- Servers are powerful computer hardware that connect other computers together, running on special server software to service user requirements
- Examples include file servers, printers, web servers, and email servers
Client and Server
- A client is a computer that uses the services provided by a server
- A server is a powerful computer hardware that connects other computers together, running on special server software
Router
- A piece of hardware that connects two or more networks
- Directs data packets to the correct destinations and handles data traveling to other directions
Connecting Backbone
- The main connecting data routes between large networks on the internet and smaller networks in local regions
Internet Connection Methods
- There are three methods: Wireless, Broadband, and Dial-up
Wireless
- Used by wireless devices (mobile phones) to log in to the internet
- Does not need to be fixed stationary, allowing for flexibility
- However, requires a connection, can be less secure than others, and tends to have slower data transmission speeds than wired broadband methods
Broadband
- Requires a wired connection to a broadband supplier, normally via a network card in the computer
- Allows for faster data transmission speeds than dial-up and wireless methods
- Requires a wired base, making it less flexible than wireless methods
Dial-up
- A wired connection via a telephone line, requiring a modem to convert signals to and from analogue for transmission
- Allows existing telephone circuits to be used, which is useful in some areas
- However, tends to have slower data transmission speeds than broadband and wireless methods
The Internet and World Wide Web
- The internet is a system of interconnected computers and servers
- The World Wide Web is a collection of interconnected webpages that form a website
Network
- A network consists of two or more computers that are linked together to share resources, exchange files, or allow electronic communications
ISP Key Terms
Point of Presence (POP)
- An access point of the internet, containing all the hardware that allows internet users to access the internet
- An ISP may operate several POPs in their area to allow good access to the internet
Network Access Point (NAP)
- An interchange between networks within the internet
- A group of computers connected together by satellites that send information to computers, allowing ISPs to interconnect with each other
Internet Protocol (IP)
- The protocol used to route packets of information across the internet
- A packet is an individual unit of data that is carried across a network, including the internet, consisting of a header and a body
Transmission Control Protocol (TCP)
- A set of standardized rules that allow computers to communicate on a network such as the internet
- Takes data from a user application program and passes it to the IP for transfer across the internet
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Description
Test your understanding of the basics of computer networks and the internet. Learn about the hardware devices, the world wide web, and the role of ISPs in providing internet access. Discover the key terms and concepts that shape our online experience.
