Index for glossary O
One-time Password
A password which is generated and used only once for authentication, and will not be reused in next authentication.
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Open System Authentication
Open System Authentication is the default authentication protocol for 802.11 standard. It consists of a simple authentication request containing the station ID and an authentication response containing success or failure. On success, both stations are considered mutually authenticated.
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Opt-in Approach
It is an arrangement that requests a sender of promotional messages to provide recipients with some means to take affirmative steps to permit the sender to send promotional messages.
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Opt-out Approach
It is an arrangement that requires senders of promotional messages to provide recipients with a means to inform the sender if they do not wish to receive further promotional messages.
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Overwriting Virus
This is a type of file virus which overwrites the contents of a target file with its own code, destroying the original contents of the target file.
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