单项选择题
A. The website has updated the security policies.
B. The user’s identity has been stolen.
C. The browser has been hijacked.
D. The user typed the website address incorrectly.
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?（）
单项选择题 Which of the following locations would hold a user’s documents and data in Windows XP?（）