Answer: A- Public Key Encryption
Explanation: The Public key Encryption is used prevalently on the web, it allows for secure messages to be sent between parties without having to agree on, or share, a secret key. It uses an asymmetric encryption scheme in which the encryption key is made public, but the decryption key is kept private.
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Try resetting the tablet and see what happens. If that doesn't work you can hard reset it (This will remove everything on your device and make it look brand new)
Both can be used for saving documents
Explanation:
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