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Flip to reveal answersWhat is the difference between the internet and the worldwide web?
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All 5 Flashcards — Digital infrastructures
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Question
What is the difference between the internet and the worldwide web?
Answer
The internet is the global network of networks — the connections themselves. The web is one service running on it, made of pages fetched with HTTP. Email, calls and games are other services on the same internet.
Question
What is edge computing, and when is it the right choice?
Answer
Processing data where it is produced rather than sending it away. Right when an answer is needed in milliseconds, when raw data would flood the network, or when the device must keep working if its link fails — smart traffic lights, for example.
Question
What is a distributed system?
Answer
Many machines cooperating on one job with no single machine in charge. There is no single point of failure and it scales by adding machines, but keeping every machine agreed on the same answer is genuinely hard. A cryptocurrency blockchain is one.
Question
Give a benefit and a limitation of cloud computing.
Answer
Benefit: resources available on demand with no hardware to buy or maintain. Limitation: the service depends on both the provider's uptime and your own connection, and the costs recur indefinitely.
Question
What limits a mobile network?
Answer
Bandwidth is shared with every device nearby, so a busy area slows down, and coverage has gaps where there is no signal from a mast.
Read the notes
Full study notes for Digital infrastructures
Topic 2.1 hub
Network fundamentals
More from Topic 2.1
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Computer Science exam skills
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