单项选择题 A user attempts to login to a bookmarked site but is prompted for their social security number,mother’s maiden name and date of birth. Which of the following has MOST likely happened?（）

单项选择题 A computer’s onboard LPT1 port fails. Which of the following I/O cards should be installed to fix this problem?（）

单项选择题 A technician recently installed a new firewall. Which of the following ports must be open to permit HTTPS traffic?（）