Which of the following categories of file extensions are generally restricted or not allowed to be sent as standard email attachments due to security risks?

Unsolicited or junk e-mail is commonly referred to as:

In which of the following folders is a copy of sent email placed?

Which of the given options best describes the truthfulness of the following statements? (i) Anyone listed in the CC field while composing an email will get a copy of the message, and anyone who receives the message will know who else the message was sent to. (ii) Anyone listed in the BCC field while composing an email will get a copy of the message, but other recipients will not know that the message was sent to the person(s) on the BCC line.