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What is the difference between blacklist and whitelist?

Have you heard that phones have blacklists and whitelists of numbers? Explain how they differ?

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The black list is a list of numbers from which you cannot be reached, but you will be available to everyone else. The white list is a list of numbers from which you can be called, and for all other numbers you will not be available. Depending on the situation, one of them is preferable to the other. White and black lists can be implemented as a function in a mobile phone, as well as a service from the operator.

Author distriman

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