If you come across something questionable online, the first thing you should do is tell your parents.
These days, the term online means connected to the Internet. In this case, we can say that the person is online when using the Internet, or the computer itself is online when it establishes an Internet connection.
"Online" and "offline" are communication terms. When a computer or user is connected to the Internet, it is said to be online. For example, a website is online because it is on the Internet. When something is not online, it is said to be "offline". When a system is offline, it is in a disconnected state.
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