1.Hash functions are functions or techniques used to encrypt passwords and other plain text into unreadable text for storage and transmission. There are many types of hashes based on the way the plain text is encoded.
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The utility of the cache, in general terms, is to provide a very small and fast data storage for some computer element.
3.Cloud computing is a technology that enables remote access to software, data processing, and file storage over the Internet. It does not require the installation of applications locally, but rather offers services on a large scale thanks to connectivity.