A.RepeaterB.HubC.RouterD.SwitchWhich of the following d……

单项选择题A technician replaces a user’s 15 inch LCD with a 20 inch LCD. Later, the user informs thetechnician that icons are very large and the text on the monitor is fuzzy and distorted. Which of the following is MOST likely the cause?（）

A. The contrast setting needs to be raised from the default.
B. The monitor firmware was not updated.
C. The new monitor has a different native resolution.
D. The monitor needs to be degaussed to clarify the picture.

单项选择题Which of the following malicious software types will create multiple pop-ups on a computer?（）

A.Adware
B.Grayware
C.Worms
D.Spyware

单项选择题Which of the following media types is considered a solid state?（）

A. Thumb drive
B. DVD drive
C. Blu-Ray drive
D. IDE FDD

单项选择题Which of the following WLAN protocols is in the 5GHz band with a MAXIMUM data rate of 54Mbps?（）

A.802.11a
B.802.11b
C.802.11g
D.802.11n

单项选择题A Windows XP Professional PC needs to be checked for compatibility before being upgraded toWindows Vista Business. Which of the following would be the BEST action to take before theupgrade?（）

A. Run the Windows Vista Upgrade Advisor on the target pc.
B. Check the README file on the Vista installation dvd for system requirements.
C. Check the manufacturer’s support pages for system requirements.
D. Run the Windows AIK on the Vista installation dvd.