4.2.3 Summative quiz >>> In computing terms what is an abstraction >>> How Computers Work
Abstractions leave out details to make things easier to understand.
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Yes, meta-data is important information that is not part of the content of the file but which is about the file, such as who owns it or when it was last modified.
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Yes, IP is designed to be a protocol that is independent of the physical details of a network and so can support communication across different physical networks.
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Checking a device on a different network is a great way of seeing whether the problem is with your network.
Most encryption algorithms are designed so that they cannot be cracked, even if the attacker knows the algorithm, as long as the key is secret.
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Yes: RAM, or main memory, stores the data that the computer is currently working on, including open files.
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That’s right. A common attack is use a computer to try a massive list of common passwords. Making people use numbers and capitals helps but it isn’t normally enough. Lots of people will choose passwords like “Pa55w0rd”, which fits the rules but is still very common.
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Yes. If the settings files are stored in the applications folder, any changes you make to them will be lost.
