CompTIA Security+™: Review Guide

1.8. Answers to Review Questions

1. D. A nonessential service is any element that isn't needed by the primary function of the server. In most cases, a web server doesn't use the print spooler service, but it often uses the server, DNS, and FTP services.

2. C. The most reliable countermeasure against malicious code is an antivirus scanner. User-behavior modification, managing media, and disabling mobile code are all countermeasures against malicious code, but they aren't as reliable and effective as antivirus scanners.

3. A. IMAP functions over TCP port 143. SMTP functions over TCP port 25. POP3 functions over TCP port 110. SSL and TLS function over TCP port 443.

4. D. This e-mail is likely a hoax. When you receive an e-mail hoax, the first step is to inform ...