20. Which of the following helps protect a computer from viruses that come with attachments? A. Installing a program that blocks e-mail access B. Opening all attached files on the e-mail system instead of downloading them C. Asking people to include their names in attachment titles D. Blocking all forwards and e-mails from senders who do not belong to your work team E. Downloading an attachment before opening it, when its source and contents are not known 21. When you refuse requests from people outside your organization, avoid using a buffer at all costs. True False 22. Which of the following is true with regard to subject lines in e-mail messages? A. Subject lines in e-mail messages are even more important than those in letters and memos. B. In order to be effective, subject lines must be lengthy. C. Concise subject lines indicate that the sender is insincere. D. Using "EOM" in subject lines is unacceptable in e-mail messages. E. None of the above. 23. Information about layoffs and firings is normally delivered orally but accompanied by a written statement. True False 24. Which of the following is a primary purpose of negative messages? A. To build a good image of the writer B. To reduce or eliminate future correspondence on the same subject so the message doesn't create more work for the writer C. To have the reader read, understand, and accept the message D. To build a good image of the writer's organization E. None of the above 25. In order to be a good netizen, you should: A. engage in flaming, whenever possible. B. always send copies to your boss or CEO, regardless of the subject or relevance of your e- mail message. C. always put the whole message in caps. D. adapt your e-mail messages to suit the recipient's system. E. not use short line lengths