Answer:
make sure the speaker is clean and you volume setting is on normal there is alot of setting for deaf people so make sure that is correctly
RAM is memory in the computer
True; synchronous means existing or occurring at the same time (I really don't know if that's a question but oh well)
Authentication can be done by the issuer of the security.
What do you mean by authentication?
Authentication is the act of proving an assertion, such as a computer system user's identification. Authentication is the process of verifying a person's or thing's identity, as opposed to identification, which is the act of indicating that identity. It could entail validating personal identification documents, verifying the authenticity of a website with a digital certificate, carbon dating an artefact, or guaranteeing that a product or document is not counterfeit.
Only a party with access to particular company documents may authenticate a mutilated certificate. It is most likely the issuer, but it could also be the transfer agent or registrar.
To learn more about authentication
brainly.com/question/28240257
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